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Dr. Paul Eastham
Naughton Associate Professor in Physics, Physics

Biography

Following my PhD in Theoretical Condensed Matter Physics at the University of Cambridge, in which I developed a theory of Bose-Einstein condensation of polaritons, I held research appointments in Imperial College London and Cambridge, as well as a Junior Research Fellowship at Sidney Sussex College Cambridge. I worked in several areas, including quantum collective behaviour, semiconductor optics, the quantum Hall effect, and complex systems. In 2009 I was awarded a Starting Investigator Research Grant by Science Foundation Ireland to establish a new theory group, complementary to the experimental photonics and condensed-matter research groups, in the School of Physics at Trinity College Dublin. I have been the Naughton Assistant Professor of Physics there since 2014, and am the Principal Investigator of the Quantum Light and Matter Group.

Publications and Further Research Outputs

Peer-Reviewed Publications

Paul Eastham, Conor Murphy, Luisa Toledo Tude, Overcoming temperature limitations in laser cooling using dressed states and diamond vacancies, Proc. SPIE, OPTO 2025 (SPIE Photonics West), edited by Denis V. Seletskiy and Masaru K. Kuno and Peter J. Pauzauskie , 13379, SPIE, 2025, pp133790G Conference Paper, 2025 TARA - Full Text DOI URL

Ortega-Taberner, Carlos and O"Neill, Eoin and Butler, Eoin and Fux, Gerald E. and Eastham, P. R., Unifying methods for optimal control in non-Markovian quantum systems via process tensors, The Journal of Chemical Physics, 161, (12), 2024, p124119 Journal Article, 2024 DOI TARA - Full Text

Luisa Toledo Tude, Conor N. Murphy and P. R. Eastham, Overcoming Temperature Limits in the Optical Cooling of Solids Using Light-Dressed States, Phys. Rev. Lett., 132, 2024, p266901 Journal Article, 2024 DOI TARA - Full Text

Eoin P. Butler, Gerald Fux, Carlos Ortega-Taberner, Brendon W. Lovett, Jonathan Keeling, Paul R. Eastham, Optimizing performance of quantum operations with non-Markovian decoherence: the tortoise or the hare?, Physical Review Letters, 132, 2024, p060401 Journal Article, 2024 DOI TARA - Full Text

Gerald E. Fux, Piper Fowler-Wright, Joel Beckles, Eoin P. Butler, Paul R. Eastham, Dominic Gribben, Jonathan Keeling, Dainius Kilda, Peter Kirton, Ewen D. C. Lawrence, Brendon W. Lovett, Eoin O"Neill, Aidan Strathearn, Roosmarijn de Wit, OQuPy: A Python package to efficiently simulate non-Markovian open quantum systems with process tensors, Journal of Chemical Physics, 161, (12), 2024, p124108 Journal Article, 2024 DOI TARA - Full Text

Luísa Toledo Tude and Paul R. Eastham, Quantum thermodynamics of driven-dissipative condensates, APL Quantum, 1, 2024, p036108 Journal Article, 2024 DOI TARA - Full Text

John P. Moroney, Paul R. Eastham, Synchronization and spacetime vortices in one-dimensional driven-dissipative condensates and coupled oscillator models, Physical Review B, 108, 2023, p195302 Journal Article, 2023 DOI TARA - Full Text

Conor N. Murphy, Luísa Toledo Tude, Paul R. Eastham, Laser cooling beyond rate equations: approaches from quantum thermodynamics, Applied Sciences, 12, 2022, p1620 Journal Article, 2022 DOI

Gerald E. Fux, Eoin P. Butler, Paul R. Eastham, Brendon W. Lovett, Jonathan Keeling, Efficient exploration of Hamiltonian parameter space for optimal control of non-Markovian open quantum systems, Physical Review Letters, 126, 2021, p200401 Journal Article, 2021 DOI

John P. Moroney and P. R. Eastham, Synchronization in disordered oscillator lattices: Nonequilibrium phase transition for driven-dissipative bosons, Physical Review Research, 3, 2021, p043092 Journal Article, 2021 DOI URL TARA - Full Text

Maria Popovic, Mark T. Mitchison, Aidan Strathearn, Brendon W. Lovett, John Goold, Paul R. Eastham, Quantum heat statistics with time-evolving matrix product operators, PRX Quantum, 2, 2021, p020338 Journal Article, 2021 DOI TARA - Full Text

Paul R. Eastham and Conor Murphy, Quantum control of solid-state qubits for thermodynamic applications, Proc. SPIE , Photonic Heat Engines: Science and Applications III, Online, 11702, 2021, pp117020I Conference Paper, 2021 DOI

R. L. Mc Guinness and P. R. Eastham, Weyl points and exceptional rings with polaritons in bulk semiconductors, Physical Review Research, 2, 2020, p043268 Journal Article, 2020 URL TARA - Full Text

C. N. Murphy and P. R. Eastham, Quantum control of excitons for reversible heat transfer, Communications Physics, 2, 2019, p120 Journal Article, 2019 TARA - Full Text URL DOI

R. L. Mc Guinness and P. R. Eastham, Chern numbers for the index surfaces of photonic crystals: conical refraction as a basis for topological materials, Physical Review A, 98, 2018, p023826 Journal Article, 2018 DOI TARA - Full Text

H. Ohadi, Y. del Valle-Inclan Redondo, A. J. Ramsay, Z. Hatzopoulos, T. C. H. Liew, P. R. Eastham, P. G. Savvidis, J. J. Baumberg, Synchronization crossover of polariton condensates in weakly disordered lattices, Physical Review B, 97, 2018, p195109 Journal Article, 2018 TARA - Full Text DOI URL URL

H. M. Cammack, P. Kirton, T. M. Stace, P. R. Eastham, J. Keeling and B. W. Lovett, Coherence protection in coupled quantum systems, Physical Review A, 97, 2018, p022103 Journal Article, 2018 TARA - Full Text DOI

F. Bello and P. R. Eastham, Localization and self-trapping in driven-dissipative polariton condensates, Physical Review B, 95, 2017, p245312- Journal Article, 2017 DOI TARA - Full Text

Disorder, synchronization and phase-locking in non-equilibrium Bose-Einstein condensates in, editor(s)N. P. Proukakis, D. W. Snoke, P. B. Littlewood , Universal themes of Bose-Einstein condensation, Cambridge University Press, 2017, pp462 - 476, [P. R. Eastham and B. Rosenow] Book Chapter, 2017

R. McGuinness and P. Eastham, Optical Chern insulators from conical refraction, CLEO/Europe-EQEC 2017, 2017, pp1- Conference Paper, 2017

Vasilios D. Karanikolas, Cristian A. Marocico, Paul R. Eastham, A. Louise Bradley, Near-field relaxation of a quantum emitter to 2D semiconductors: surface dissipation and exciton polaritons, Physical Review B, 94, 2016, p195418- Journal Article, 2016 TARA - Full Text DOI

P. R. Eastham, P. Kirton, H. M. Cammack, B. W. Lovett, J. Keeling, Bath induced coherence and the secular approximation, Physical Review A, 94, 2016, p012110 Journal Article, 2016 DOI

Kyle E. Ballantine, John F. Donegan, Paul R. Eastham, There are many ways to spin a photon: Half-quantization of a total optical angular momentum, Science Advances, 2, (4), 2016, pe1501748 Journal Article, 2016 URL TARA - Full Text DOI

C. P. Dietrich, R. Johne, T. Michalsky, C. Sturm, P. Eastham, H. Franke, M. Lange, M. Grundmann, and R. Schmidt-Grund, Parametric relaxation in whispering gallery mode exciton-polariton condensates, Physical Review B, 91, 2015, p041202(R)- Journal Article, 2015 DOI TARA - Full Text

David McCloskey, Kyle E. Ballantine, Paul R. Eastham, and John F. Donegan, Photonic nanojets in Fresnel zone scattering from non-spherical dielectric particles, Optics Express, 20, 2015, p26326- Journal Article, 2015 DOI

Ballantine, KE, Donegan, JF, Eastham, PR, Conical diffraction and the dispersion surface of hyperbolic metamaterials, Physical Review A, 90, (1), 2014, p013803- Journal Article, 2014 DOI TARA - Full Text

David Racine and P. R. Eastham, Quantum theory of multimode polariton condensation, Physical Review B, 90, 2014, p085308- Journal Article, 2014 TARA - Full Text

Y. Zhang, J. J. Wang, K. E. Ballantine, P. R. Eastham and W. J. Blau, Hybrid plasmonic nanostructures with unconventional nonlinear optical properties, Advanced Optical Materials, 2, 2014, p331- Journal Article, 2014 DOI

R. T. Darcy, D. McCloskey, K. E. Ballantine, J. G. Lunney, P. R. Eastham and J. F. Donegan, Conical diffraction intensity profiles generated using a top-hat input beam, Optics Express, 22, (9), 2014, p11290- Journal Article, 2014 DOI TARA - Full Text

A. Janot, T. Hyart, P. R. Eastham and B. Rosenow, Superfluid stiffness of a driven dissipative condensate with disorder, Physical Review Letters, 110, 2013, p230403- Journal Article, 2013 URL TARA - Full Text DOI

R. T. Darcy, D. McCloskey, K. E. Ballantine, B. D. Jennings, J. G. Lunney, P. R. Eastham and J. F. Donegan, White light conical diffraction, Optics Express, 21, 2013, p20394- Journal Article, 2013 DOI

P. R. Eastham, A. O. Spracklen and J. Keeling, Lindblad theory of dynamical decoherence of quantum-dot excitons, Physical Review B, 87, 2013, p195306- Journal Article, 2013 DOI

R. Spano, J. Cuadra, C. Lingg, D. Sanvitto, M. D. Martin, P. R. Eastham, M. van der Poel, J. M. Hvam and L. Vina, Build up of off-diagonal long-range order in microcavity exciton-polaritons across the parametric threshold, Optics Express, 21, 2013, p10792- Journal Article, 2013 DOI TARA - Full Text

P. R. Eastham, N. R. Cooper and D. K. K. Lee, Diamagnetism and flux creep in bilayer exciton superfluids, Physical Review B, 85, 2012, p165320- Journal Article, 2012 DOI TARA - Full Text

Phelan, CF, Ballantine, KE, Eastham, PR, Donegan, JF, Lunney, JG, Conical diffraction of a Gaussian beam with a two crystal cascade, Optics Express, 20, (12), 2012, p13201-13207 Journal Article, 2012 DOI TARA - Full Text

R. Spano, J. Cuadra, G. Tosi, C. Antón, C. A. Lingg, D. Sanvitto, M. D. Martin, L. Viña, P. R. Eastham, M. van der Poel and J. M. Hvam, Coherence properties of exciton polariton OPO condensates in one and two dimensions, New Journal of Physics, 14, 2012, p075018- Journal Article, 2012 TARA - Full Text DOI

R. T. Brierley, C. Creatore, P. B. Littlewood and P. R. Eastham, Adiabatic state preparation of interacting two-level systems, Physical Review Letters, 109, 2012, p043002- Journal Article, 2012 DOI TARA - Full Text

C. Creatore, R. T. Brierley, R. T. Phillips, P. B. Littlewood and P. R. Eastham, Creation of entangled states in coupled quantum dots via adiabatic rapid passage, Physical Review B, 86, 2012, p155442- Journal Article, 2012 TARA - Full Text DOI

D. O'Dwyer, C. F. Phelan, Y. Rakovich, P. R. Easthan, J. G. Lunney and J. F. Donegan, The creation and annihilation of optical vortices using cascade conical diffraction, Optics Express, 19, (3), 2011, p2580 - 2588 Journal Article, 2011 URL TARA - Full Text DOI

R. T. Brierley, P. B. Littlewood and P. R. Eastham, Amplitude-mode dynamics of polariton condensates, Physical Review Letters, 107, (4), 2011, p040401 Journal Article, 2011 TARA - Full Text DOI URL

Y. Wu, I. M. Piper, M. Ediger, P. Brereton, E. R. Schmigdall, P. R. Eastham, M. Hugues, M. Hopkinson and R. T. Phillips, Population inversion in a single InGaAs quantum dot using the method of adiabatic rapid passage, Physical Review Letters, 106, 2011, p067401 Journal Article, 2011 TARA - Full Text URL

Peter Brereton, Yanwen Wu, Isobel Piper, Matthias Ediger, Emma Schmidgall, Richard Phillips, Paul Eastham, Maxime Hugues, and Mark Hopkinson, Robust Optical Inversion of the Excitonic Population of InGaAs Quantum Dots via Adiabatic Rapid Passage, OSA Technical Digest (CD) , Quantum Electronics and Laser Science Conference (QELS), Baltimore, Maryland, 1 May 2011, (QMK2), Optical Society of America, 2011 Conference Paper, 2011 TARA - Full Text URL

D. K. K. Lee, P. R. Eastham and N. R. Cooper, Breakdown of counterflow superfluidity in a disordered quantum Hall bilayer, Advances in Condensed Matter Physics, 2011, 2011, p792125 Journal Article, 2011 URL TARA - Full Text URL

E. R. Schmidgall, P. R. Eastham, and R. T. Phillips, Population inversion in quantum dot ensembles via adiabatic rapid passage, Physical Review B, 81, (19), 2010, p195306 Journal Article, 2010 URL DOI TARA - Full Text

Brierley, RT, Eastham, PR, Finite-momentum condensation in a pumped microcavity, Physical Review B, 82, (3), 2010, p035317 Journal Article, 2010 TARA - Full Text

P. R. Eastham, N. R. Cooper, and D. K. K. Lee, Critical supercurrents and self organization in quantum Hall bilayers, Physical Review Letters, 105, 2010, p23680- Journal Article, 2010 TARA - Full Text

I. M. Piper, P. R. Eastham, M. Ediger, A. M. Wilson, Y. Wu, M. Hugues, M. Hopkinson and R. T. Phillips, Microcavity quantum-dot systems for non-equilibrium Bose-Einstein condensation, Journal of Physics: Conference Series , 245, (1), 2010, pp012059- Conference Paper, 2010 TARA - Full Text

D. O'Dwyer, C. Phelan, Y. Rakovich, P. R. Eastham, J. G. Lunney and J. F. Donegan, Generation of continuously tuneable fractional optical orbital angular momentum using internal conical diffraction, Optics Express, 18, (16), 2010, p16480 - 16485 Journal Article, 2010 TARA - Full Text

P. B. Littlewood, J. M. J. Keeling, B. D. Simons, P. R. Eastham, F. M. Marchetti and M. H. Szymanska, Novel quantum condensates in excitonic matter, AIP Conference Proceedings, XIII: Thirteenth Training Course in the Physics of Strongly Correlated Systems, Melville, N.Y., edited by A. Avella, F. Mancini , 1162, AIP, 2009, pp5-54 Conference Paper, 2009 DOI

Eastham, PR, Cooper, NR, Lee, DKK, Vortex states of a disordered quantum Hall bilayer, Physical Review B, 80, 2009, p045302- Journal Article, 2009 TARA - Full Text

Whittaker, DM, Eastham, PR, Coherence properties of the microcavity polariton condensate, EPL, 87, 2009, p27002- Journal Article, 2009 TARA - Full Text

Eastham, PR, Phillips, RT, Quantum condensation from a tailored exciton population in a microcavity, Physical Review B, 79, 2009, p165303- Journal Article, 2009 TARA - Full Text

Eastham, PR, Mode locking and mode competition in a nonequilibrium solid-state condensate, Physical Review B, 78, (3), 2008, p035319 Journal Article, 2008 TARA - Full Text

Love, APD, Krizhanovskii, DN, Whittaker, DM, Bouchekioua, R, Sanvitto, D, Al Rizeiqi, S, Bradley, R, Skolnick, MS, Eastham, PR, Andre, R, Dang, LS, Intrinsic decoherence mechanisms in the microcavity polariton condensate, Physical Review Letters, 101, 2008, p067404 - Journal Article, 2008 TARA - Full Text

Quantum corrections to the Ising interactions in LiYxHo1-xF4 in, editor(s)B. Barbara, Y. Imry, G. Sawatzky P. C. E. Stamp , Quantum Magnetism, Dordrecht, Springer, 2008, pp57 - 66, [A. Chin and P. R. Eastham] Book Chapter, 2008 TARA - Full Text

Eastham, PR, The new physics of non-equilibrium condensates: insights from classical dynamics, Journal of Physics: Condensed Matter, 19, (29), 2007, p295210 Journal Article, 2007 TARA - Full Text

Eastham, PR, Littlewood, PB, Finite-size fluctuations and photon statistics near the polariton condensation transition in a single-mode microcavity, Physical Review B, 73, 2006, p085306 Journal Article, 2006 TARA - Full Text

Eastham, PR, Blythe, RA, Bray, AJ, Moore, MA, Mechanism for the failure of the Edwards hypothesis in the Sherrington-Kirkpatrick spin glass, Physical Review B, 74, 2006, p020406 Journal Article, 2006 TARA - Full Text

Keeling, J, Eastham, PR, Szymanska, MH, Littlewood, PB, BCS-BEC crossover in a system of microcavity polaritons, Physical Review B, 72, (11), 2005, p115320 Journal Article, 2005 TARA - Full Text

F. M. Marchetti, M. H. Szymanska, P. R. Eastham, B. D. Simons and P. B. Littlewood, Condensation and lasing of microcavity polaritons: comparison between two models, Solid State Communications, Spontaneous Coherence in Excitonic Systems , Pennsylvania, USA, 134, Elsevier, 2005, pp111 - 115 Conference Paper, 2005 TARA - Full Text

P. B. Littlewood, P. R. Eastham, J. M. J. Keeling, F. M. Marchetti, B. D. Simons and M. H. Szymanska, Models of coherent exciton condensation, Journal of Physics: Condensed Matter, 16, (35), 2004, pS3597-S3620 Journal Article, 2004 TARA - Full Text

Keeling, J, Eastham, PR, Szymanska, MH, Littlewood, PB, Polariton condensation with localized excitons and propagating photons, Physical Review Letters, 93, 2004, p226403 Journal Article, 2004 TARA - Full Text

P. R. Eastham, M. H. Szymanska and P. B. Littlewood, Phase-locking in quantum and classical oscillators: polariton condensates, lasers, and arrays of Josephson junctions, Solid State Communications, 127, (2), 2003, p117 - 122 Journal Article, 2003 TARA - Full Text

Eastham, PR, Whittaker, DM, Steady states of a chi(3) parametric oscillator with coupled polarizations, Physical Review B, 68, (7), 2003, p075324- Journal Article, 2003 TARA - Full Text

Lagoudakis, PG, Savvidis, PG, Baumberg, JJ, Whittaker, DM, Eastham, PR, Skolnick, MS, Roberts, JS, Stimulated spin dynamics of polaritons in semiconductor microcavities, Physical Review B, 65, (16), 2002, p161310- Journal Article, 2002 TARA - Full Text

Littlewood, PB, Brown, GJ, Eastham, PR, Szymanska, MH, Some remarks on the ground state of the exciton and exciton-polariton system, physica status solidi (b),, 234, 2002, p36-49 Journal Article, 2002 DOI

Eastham, PR, Littlewood, PB, Bose condensation of cavity polaritons beyond the linear regime: The thermal equilibrium of a model microcavity, Physical Review B, 64, (23), 2001, p235101- Journal Article, 2001 TARA - Full Text

Eastham, PR, Littlewood, PB, Bose condensation in a model microcavity, Solid State Communications, 116, (7), 2000, p357-361 Journal Article, 2000 TARA - Full Text

Exciton condensation in, editor(s)Sadowski, Potemski, Grynberg , Optical properties of semiconductor nanostructures, Kluwer, 2000, pp133 - 142, [P. B. Littlewood and P. R. Eastham] Book Chapter, 2000

Non-Peer-Reviewed Publications

P. R. Eastham, C. N. Murphy, L. Toledo Tude, Overcoming temperature limitations in laser cooling using dressed states and diamond vacancies, SPIE Photonics West (Photonic Heat Engines: Science and Applications VII), San Francisco CA, 29/1/2025, 2025 Invited Talk, 2025

Paul Eastham and John Moroney, Coherence and synchronization in polariton lattices, Hybrid Photonic Materials 2024, Syros, Greece, 29/9-4/10 2024, 2024 Invited Talk, 2024

Dimitrios Georgiadis and Paul Eastham, Optimizing Transmon Qubit Reset in Non-Markovian Environments, Summer School on Superconducting Electronics 2024, Corsica, September 2024, 2024 Poster, 2024

P. R. Eastham, GPEs, coupled oscillators, and KPZ equations: connections and differences, Skoletch Seminar Series, Online, 20/06/2024, 2024 Invited Talk, 2024

Luisa Toledo Tude and P. R. Eastham, Driven-dissipative condensates and the second law of thermodynamics, ICSCE 12, Dublin, 10-14 June 2024, 2024 Oral Presentation, 2024

P. R. Eastham, GPEs, coupled oscillators, and KPZ equations: connections and differences, Trends in Polaritonics, Moscow and Online, 30-31 May 2024, 2024 Invited Talk, 2024

Luisa Toledo Tude and Paul Eastham, Polariton condensates and the second law of thermodynamics, OECS18, Lecce, Italy, 2023 Poster, 2023

P. R. Eastham, Polariton superflows: are they dissipationless?, OECS18, Lecce, Italy, 12th-16th June 2023, 2023 Oral Presentation, 2023

Luisa Toledo Tude and Paul Eastham, A model for thermodynamic analysis of polariton condensation, PLMCN 2023, Medellin, Colombia, 2023 Oral Presentation, 2023

P. R. Eastham, Optimal control and inverse design with process tensors, International Quantum Tensor Network Meeting "Non-Markovian Dynamics", New York, 15-17 September 2023, 2023 Invited Talk, 2023

Paul Eastham and John Moroney, Coherence and synchronization for driven-dissipative condensates in a random potential, ICSCE 11, Burlington, Vermont., 7-11/08/2022, 2022 Oral Presentation, 2022

Luísa Toledo Tude and Paul Eastham, A model for thermodynamics analysis of polariton condensation, ICSCE 11, Burlington, Vermont, 7-11/08/2022, 2022 Poster, 2022

Paul Eastham and John Moroney, Synchronization of coupled oscillators on finite-dimensional lattices, APS March Meeting 2022, Chicago and Online, 14-18 March 2022, 2022 Oral Presentation, 2022

Conor Murphy and Paul Eastham, Quantum thermodynamics and laser cooling with silicon vacancies in diamond, APS March Meeting 2022, Chicago and Online, 14-18 March, 2022 Poster, 2022

Maria Popovic, Mark T. Mitchison, Aidan Strathearn, Brendon W. Lovett, John Goold, Paul R. Eastham, Non-equilibrium quantum thermodynamics with time- evolving matrix product operators (TEMPO), Second Workshop on Stochastic Thermodynamics, Online, 17th - 21st May 2021, 2021 Oral Presentation, 2021

Eoin Butler, Gerald Fux, Paul Eastham, Brendon Lovett and Jonathan Keeling, Optimal control of non-Markovian systems using numerically exact methods, Harnessing Quantum Matter Data Revolution Summer School, Online, 7-11 June 2021, 2021 Poster, 2021

John P. Moroney and P. R. Eastham, A non-equilibrium phase transition in disordered lattices of polariton condensates, Photonics Ireland 2021, Online, 14-16 June 2021, 2021 Poster, 2021

P. R. Eastham, E. O. Butler, G. Fux, J. Keeling, B. Lovett, Optimal control beyond the weak-coupling and Markovian regimes, CoCoNUT2021, Online, 24-27 August 2021, 2021 Oral Presentation, 2021

C. N. Murphy and P. R. Eastham, Laser Cooling of SiV Centres in Diamond to 1 K, Photonics Ireland 2021, Online, 14-16 June 2021, 2021 Oral Presentation, 2021

Eoin Butler, Gerald Fux, Paul Eastham, Jonathan Keeling, Brendon Lovett, Optimal control of non-Markovian systems using numerically exact methods, Photonics Ireland 2021, Online, 14-16 June 2021, 2021 Poster, 2021

P. R. Eastham and R. Mc Guinness, Topological photonics from strong light-matter coupling in bulk semiconductors, Photonics Online Meetup, Online, 13/01/2021, 2021 Poster, 2021

Paul R. Eastham and Conor Murphy, Quantum control of solid-state qubits for thermodynamic applications, SPIE Photonics West, Photonic Heat Engines: Science and Applications III, Online, 5/03/2021, 2021, SPIE Invited Talk, 2021

John P. Moroney and Paul R. Eastham, A non-equilibrium phase transition in disordered lattices of polariton condensates, Collective Effects and Non-Equilibrium Quantum Dynamics, Online, 28-30 June, 2021 Poster, 2021

John Moroney and P. R. Eastham, A non-equilibrium phase transition in a disordered chain of polariton condensates, PLMCN (Physics of Light Matter Coupling in Nanostructures), Online, 27/10/2020, 2020 Oral Presentation, 2020

Maria Popovic, John Goold, Paul Eastham and Brendon Lovett, Quantum thermodynamics and implementation of non- Markovian settings using the TEMPO algorithm, Quantum Thermodynamics for Young Scientists, Bad Honnef, Germany, 2/2/2020, 2020 Poster, 2020

C. N. Murphy and P. R. Eastham, Quantum control of excitons for reversible heat transfer, Polaron Day 2019, Vienna, 23/05/2019, 2019 Oral Presentation, 2019

R. McGuinness and P. Eastham, Optical Chern insulators from conical refraction, Irish Quantum Foundations, Dublin, 28/05/2018, 2018 Oral Presentation, 2018

C. Murphy and P. R. Eastham, Quantum thermal machines with a laser controlled quantum dot, Collective Behaviour in Quantum Matter, Trieste, Italy, 2018 Poster, 2018

John Moroney and P. R. Eastham, Synchronization in asymmetrically-pumped polariton josephson junctions, Quantum Fluids of Light and Matter, Les Houches, France, 2018 Poster, 2018

C. Murphy and P. R. Eastham, Theory of a Laser Controlled Single Quantum Dot Heat Pump, Polaron Day 2018, Nottingham, U.K., 17/05/2018, 2018 Poster, 2018

R. McGuinness and P. Eastham, Optical Chern insulators from conical refraction, Topical Research Meeting on Topological States in Strongly Interacting Light-Matter Systems, Milton Keynes, U.K., 19/3/2018, 2018 Oral Presentation, 2018

P. R. Eastham, Platforms for quantum thermodynamics, QuantERA proposer's day, Valletta, Malta, 16/02/2017, 2017 Poster, 2017

P. R. Eastham. K. E. Ballantine and J. F. Donegan, Half quantization of optical angular momentum, Fourth International Conference on Optical Angular Momentum, Anacapri, Capri, Italy, 18/09/2017, 2017 Invited Talk, 2017

P. R. Eastham, F. Bello, The Josephson junction redux: non-equilibrium self-trapping in polariton condensates, Hybrid Photonics and Materials International Conference, Mykonos, Greece, 25/09/2017, 2017 Invited Talk, 2017

P. R. Eastham, Quantum control and thermodynamics in semiconductor nanostructures, Quantum Control of Light and Matter (Gordon Research Conference), Mount Holyoke College, South Hadley MA, USA, 06/08/2017, 2017 Poster, 2017

K. E. Ballantine, J. F. Donegan and P. R. Eastham, Half quantization of a total optical angular momentum, Photon 16, Leeds, U.K., 06/09/2016, 2016 Oral Presentation, 2016

P. R. Eastham, Spinning the 2D electromagnetic field: half-quantization of an optical angular momentum, Department Seminar, NUI Maynooth, 12/04/2016, 2016 Invited Talk, 2016

P. R. Eastham, Photons with half a twist: angular momentum and structured light, Advanced Laser Technologies 16, Galway, 12/09/2016, 2016 Invited Talk, 2016

P. R. Eastham, There's more than one way to spin a photon: fractional quantum numbers in optics, TCD Physics Society Seminar, TCD, 06/10/2016, 2016 Invited Talk, 2016

P. R. Eastham, Photons with half a twist: angular momentum and structured light, Department Seminar, Dublin City University, 8/12/2016, 2016 Invited Talk, 2016

P. R. Eastham, Spinning the 2D electromagnetic field, International workshop on 2D materials, Campofelice di Roccella, Italy, 2/06/2016, 2016 Invited Talk, 2016

P. R. Eastham, Quantum coherence, Department Seminar, School of Physics, TCD, 20/03/2015, 2015 Invited Talk, 2015

F. Bello and P. R. Eastham, Dissipative self-trapping in Bose-Einstein condensates, Photonics Ireland 2015, Cork, 2/09/2015, 2015 Oral Presentation, 2015

P. R. Eastham, P. Kirton, H. Cammack, B. W. Lovett, J. Keeling, Bath-induced coherence and the secular approximation, Photonics Ireland 2015, Cork, 2015 Poster, 2015

K. E. Ballantine, J. F. Donegan and P. R. Eastham, Dispersion surface of a biaxial hyperbolic metamaterial, Photonics Ireland 2015, Cork, 2/09/2015, 2015 Poster, 2015

P. R. Eastham, Quantum coherence, Department Seminar, University College Cork, 9/11/2015, 2015 Invited Talk, 2015

P. R. Eastham, Bose condensed polaritons: superfluid, normal fluid, or Bose glass? , Department Seminar, University of Michigan Ann Arbor, 25/02/2014, 2014 Invited Talk, 2014

P. R. Eastham, Macroscopic quantum coherence and superfluidity of exciton-polaritons, Irish Quantum Foundations Meeting, TCD, 30/05/2014, 2014 Invited Talk, 2014

P. R. Eastham, There are many ways to spin a photon: fermionic quantization of optical angular momentum, Department Seminar, Imperial College London, 4/12/2013, 2013 Invited Talk, 2013

P. R. Eastham, Alchemy isn't dead: discovering new particles in the freezer, TCD Physics Society Seminar, TCD, 21/11/2013, 2013 Invited Talk, 2013

K. E. Ballantine and P. R. Eastham, Quantization and conservation of angular momentum in non-uniformly polarized beams, AMBER Launch, Dublin, 24/10/2013, 2013 Poster, 2013

P. R. Eastham, Bose-Einstein condensation in the quantum Hall bilayer, Universal Themes in Bose-Einstein Condensation, Lorentz Center, Leiden, 13/3/2013, 2013 Invited Talk, 2013

P. R. Eastham, Disorder and superfluidity in Bose-Einstein condensates of polaritons, Department Seminar, University of St Andrews, 26/9/2013, 2013 Invited Talk, 2013

A. Janot, T. Hyart, B. Rosenow and P. R. Eastham, Many body physics in open photonic systems: superfluidity and Bose-Einstein condensation of polaritons, Photonics Ireland 2013, Belfast, 4/9/2013, 2013 Poster, 2013

P. R. Eastham, A. Janot, T. Hyart and B. Rosenow, Many body physics in open photonic systems: superfluidity and Bose-Einstein condensation of polaritons, Thirteenth Conference on the Optics of Excitons in Confined Systems (OECS13), Rome, 12/9/2013, 2013 Poster, 2013

K. E. Ballantine and P. R. Eastham, Quantisation and conservation of angular momentum in non-uniformly polarised beams, Rosse medal research roundup, Dublin, 30/3/2012, 2012 Poster, 2012

D. Racine and P. R. Eastham, Quantum theory of a two-mode polariton condensate, POLATOM, Cambridge U.K., 9/9/2012, 2012 Poster, 2012

R. T. Brierley, C. Creatore, P. B. Littlewood and P. R. Eastham, Adiabatic state preparation of interacting two-level systems, Bulletin of the American Physical Society, American Physical Society (APS) March Meeting, Boston, 27/2/2012, 2012 Oral Presentation, 2012

K. E. Ballantine and P. R. Eastham, Quantisation and conservation of photon angular momentum in non-uniformly polarised beams, POLATOM, Cambridge U.K., 9/9/2012, 2012 Poster, 2012

D. Racine and P. R. Eastham, Quantum theory of multiple exciton-polariton Bose condensates, Sixth International Conference on Spontaneous Coherence in Excitons (ICSCE6), Stanford, 27/8/2012, 2012 Poster, 2012

C. Creatore, R. T. Brierley, R. T. Phillips, P. B. Littlewood, P. R. Eastham, Creation of entangled exciton states in coupled quantum dots, Bulletin of the American Physical Society, American Physical Society (APS) March Meeting, Boston, 29/2/2012, 2012 Oral Presentation, 2012

K. E. Ballantine and P. R. Eastham, Quantisation and conservation of photon angular momentum in non-uniformly polarised beams, Photon 12, Durham U.K., 6/9/2012, 2012 Oral Presentation, 2012

C. Creatore, R. T. Brierley, P. B. Littlewood and P. R. Eastham, Adiabatic state preparation of interacting two-level systems, POLATOM, Cambridge U.K., 9/9/2012, 2012 Poster, 2012

C. Creatore, R. T. Brierley, P. B. Littlewood and P. R. Eastham, Adiabatic state preparation of interacting two-level systems, Photon12, Durham U.K., 6/9/2012, 2012 Oral Presentation, 2012

P. R. Eastham, Bose-Einstein condensates of excitons in quantum Hall bilayers, Department Seminar, University College Cork, 21/11/2011, 2011 Invited Talk, 2011

P. R. Eastham, N. R. Cooper and D. K. K. Lee, Diamagnetism, flux creep and critical currents for bilayer exciton superfluids, Condensed Matter and Materials Physics (CMMP11), Manchester, U.K., 13/12/2011, 2011 Oral Presentation, 2011

P. R. Eastham, Adiabatic control of many-particle states in coupled quantum dots, Quantum Information and Condensed Matter Physics, Maynooth, 1/9/2011, 2011 Invited Talk, 2011

R. T. Brierley, C. Creatore, P. B. Littlewood and P. R. Eastham, Amplitude-mode dynamics of polariton condensates, POLATOM, Crete, 1/9/2011, 2011 Poster, 2011

P. R. Eastham, Polariton lasing and condensation in semiconductor microcavities - coherence and dynamics, Department Seminar, University of Leipzig, 10/6/2011, 2011 Invited Talk, 2011

P. R. Eastham, Superfluidity in quantum Hall bilayers, Fifth International Conference on Spontaneous Coherence in Excitons (ICSCE5), Lausanne, Switzerland, 1/2/2011, 2011 Oral Presentation, 2011

R. T. Brierley, C. Creatore, R. T. Phillips, P. B. Littlewood and P. R. Eastham, State preparation of an interacting quantum dot system by adiabatic rapid passage, POLATOM, Crete, 4/5/2011, 2011 Poster, 2011

R. T. Brierley, P. B. Littlewood and P. R. Eastham, Amplitude oscillations in a non-equilibrium polariton condensate, Bulletin of the American Physical Society, American Physical Society (APS) March Meeting, Dallas, Texas, 25/03/2011, 2011 Oral Presentation, 2011

P. R. Eastham, Adiabatic control of many-particle states in coupled quantum dots, International school of Nanophotonics and Photovoltaics, Maratea, Italy, 19/9/2011, 2011 Invited Talk, 2011

D. Racine and P. R. Eastham, Quantum theory of a two-mode polariton condensate, Quantum Information and Condensed Matter Physics, Maynooth, 1/9/2011, 2011 Poster, 2011

D. Racine and P. R. Eastham, Quantum theory of a two-mode polariton condensate, Physics by the Lake, Ambleside, U.K., 1/7/2010, 2010 Poster, 2010

P. R. Eastham, Superfluidity in quantum Hall bilayers, Department Seminar, University of Cambridge, U.K., 11/2/2010, 2010 Invited Talk, 2010

D. K. K. Lee, P. R. Eastham and N. R. Cooper, Vortex states of a dirty quantum Hall bilayer, Bulletin of the American Physical Society, American Physical Society (APS) March Meeting, Portland, Oregan, 17/3/2010, 2010 Oral Presentation, 2010

Research Expertise

Description

My research explores the quantum physics of light and matter, generally in the context of semiconductor nanostructures like quantum dots, wells, and microcavities. I have a particular interest in the interplay between many-particle physics and quantum coherence, and the exotic collective behaviours that can result, like Bose-Einstein condensation. More generally I am interested in the possibilities for generating new physics by controlling the motion of electrons and photons in nanostructured materials and devices, and the possibilities for exploiting this physics in areas such as energy harvesting, quantum computing, and photonics. Related areas of research include semiconductor optics, topological effects in optics and condensed-matter, decoherence and quantum control in solid-state qubits, and photonic materials. My work is primarily theoretical, but I work closely with experimentalists to ensure its relevance and increase its impact.

Projects

  • Title
    • Heat transfer and dissipation in quantum devices: exploiting strong-coupling to structured baths for enhanced performance
  • Funding Agency
    • SFI
  • Date From
    • 12/2022
  • Date To
    • 11/2026
  • Title
    • Machine learning methods for the optimal control of quantum systems
  • Funding Agency
    • Irish Research Council
  • Date From
    • 9/2019
  • Date To
    • 3/2024
  • Title
    • Light and matter in disordered materials: towards a random polariton laser
  • Funding Agency
    • Irish Research Council
  • Date From
    • 9/2019
  • Date To
    • 11/2021
  • Title
    • Optical Cooling of Semiconductors with Modulated Laser Pulses
  • Funding Agency
    • Irish Research Council
  • Date From
    • 9/2017
  • Date To
    • 11/2021
  • Title
    • Nanoscale quantum heat pumps enabled by strong light-matter interactions: new routes to optical cooling of semiconductors
  • Funding Agency
    • SFI
  • Date From
    • 12/2015
  • Date To
    • 11/2017
  • Title
    • Towards fractional topological insulators of light: many-body physics with propagating polariton gases
  • Funding Agency
    • Irish Research Council
  • Date From
    • 10/2015
  • Date To
    • 09/2019
  • Title
    • Strong interactions and collective effects in semiconductor optoelectronics
  • Summary
    • Development of theoretical tools to model collective behaviour in semiconductor optics.
  • Funding Agency
    • SFI
  • Date From
    • 2009
  • Date To
    • 2013
  • Title
    • Coherent matter in semiconductor microcavities: non-equilibrium polariton condensates
  • Summary
    • Aims to implement a new approach to creating polariton condensates in highly non-equilibrium semiconductors, and to develop new techniques for precisely controlling electrons in semiconductors.
  • Funding Agency
    • EPSRC UK
  • Date From
    • 2008
  • Date To
    • 2012
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