Dr. Paul Eastham
Naughton Associate Professor in Physics, Physics
Email easthamp@tcd.ie Phone3531896 8456https://www.tcd.ie/Physics/research/groups/qlamgBiography
Following my PhD in Theoretical Condensed Matter Physics at the University of Cambridge, in which I developed a theory of BoseEinstein 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 condensedmatter research groups, in the School of Physics at Trinity College Dublin. I have been the Naughton Assistant Professor of Physics there since 2012, and am the Principal Investigator of the Quantum Light and Matter Group.
Publications and Further Research Outputs
 David McCloskey, Kyle E. Ballantine, Paul R. Eastham, and John F. Donegan, Photonic nanojets in Fresnel zone scattering from nonspherical dielectric particles, Optics Express, 20, 2015, p26326Journal Article, 2015, DOI
 Kyle E. Ballantine, John F. Donegan, Paul R. Eastham, There are many ways to spin a photon: Halfquantization of a total optical angular momentum, Science Advances, 2, (4), 2016, pe1501748Journal Article, 2016, DOI , URL , TARA  Full Text
 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, p012110Journal Article, 2016, DOI
 Vasilios D. Karanikolas, Cristian A. Marocico, Paul R. Eastham, A. Louise Bradley, Nearfield relaxation of a quantum emitter to 2D semiconductors: surface dissipation and exciton polaritons, Physical Review B, 94, 2016, p195418Journal Article, 2016, DOI , TARA  Full Text
 Disorder, synchronization and phaselocking in nonequilibrium BoseEinstein condensates in, editor(s)N. P. Proukakis, D. W. Snoke, P. B. Littlewood , Universal themes of BoseEinstein condensation, Cambridge University Press, 2017, pp462  476, [P. R. Eastham and B. Rosenow]Book Chapter, 2017
 F. Bello and P. R. Eastham, Localization and selftrapping in drivendissipative polariton condensates, Physical Review B, 95, 2017, p245312Journal Article, 2017, DOI , TARA  Full Text
 R. McGuinness and P. Eastham, Optical Chern insulators from conical refraction, CLEO/EuropeEQEC 2017, 2017, pp1Conference Paper, 2017
 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, p022103Journal Article, 2018, DOI , TARA  Full Text
 H. Ohadi, Y. del ValleInclan 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, p195109Journal Article, 2018, DOI , URL , TARA  Full Text
 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, p023826Journal Article, 2018, DOI , TARA  Full Text
 C. N. Murphy and P. R. Eastham, Quantum control of excitons for reversible heat transfer, Communications Physics, 2, 2019, p120Journal Article, 2019, DOI , URL , TARA  Full Text
 R. L. Mc Guinness and P. R. Eastham, Weyl points and exceptional rings with polaritons in bulk semiconductors, Physical Review Research, 2, 2020, p043268Journal Article, 2020, URL , TARA  Full Text
 Paul R. Eastham and Conor Murphy, Quantum control of solidstate qubits for thermodynamic applications, Proc. SPIE , Photonic Heat Engines: Science and Applications III, Online, 11702, 2021, pp117020IConference Paper, 2021, 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 nonMarkovian open quantum systems, Physical Review Letters, 126, 2021, p200401Journal Article, 2021, DOI
 Maria Popovic, Mark T. Mitchison, Aidan Strathearn, Brendon W. Lovett, John Goold, Paul R. Eastham, Quantum heat statistics with timeevolving matrix product operators, PRX Quantum, 2, 2021, p020338Journal Article, 2021, DOI , TARA  Full Text
 John P. Moroney and P. R. Eastham, Synchronization in disordered oscillator lattices: Nonequilibrium phase transition for drivendissipative bosons, Physical Review Research, 3, 2021, p043092Journal Article, 2021, DOI , URL , 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, p1620Journal Article, 2022, DOI
 John P. Moroney, Paul R. Eastham, Synchronization and spacetime vortices in onedimensional drivendissipative condensates and coupled oscillator models, Physical Review B, 108, 2023, p195302Journal Article, 2023, DOI
 Eoin P. Butler, Gerald Fux, Carlos OrtegaTaberner, Brendon W. Lovett, Jonathan Keeling, Paul R. Eastham, Optimizing performance of quantum operations with nonMarkovian decoherence: the tortoise or the hare?, Physical Review Letters, 132, 2024, p060401Journal 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 LightDressed States, Phys. Rev. Lett., 132, 2024, p266901Journal Article, 2024, DOI , TARA  Full Text
 Luísa Toledo Tude and Paul R. Eastham, Quantum thermodynamics of drivendissipative condensates, APL Quantum, 1, 2024, p036108Journal Article, 2024, DOI
 Whittaker, DM, Eastham, PR, Coherence properties of the microcavity polariton condensate, EPL, 87, 2009, p27002Journal Article, 2009, DOI , URL , TARA  Full Text
 Eastham, PR, Cooper, NR, Lee, DKK, Vortex states of a disordered quantum Hall bilayer, Physical Review B, 80, 2009, p045302Journal Article, 2009, DOI , URL , TARA  Full Text
 Eastham, PR, Phillips, RT, Quantum condensation from a tailored exciton population in a microcavity, Physical Review B, 79, 2009, p165303Journal Article, 2009, DOI , URL , 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, DOI , URL , TARA  Full Text
 Eastham, PR, Mode locking and mode competition in a nonequilibrium solidstate condensate, Physical Review B, 78, (3), 2008, p035319Journal Article, 2008, DOI , URL , TARA  Full Text
 Eastham, PR, The new physics of nonequilibrium condensates: insights from classical dynamics, Journal of Physics: Condensed Matter, 19, (29), 2007, p295210Journal Article, 2007, DOI , URL , TARA  Full Text
 Eastham, PR, Blythe, RA, Bray, AJ, Moore, MA, Mechanism for the failure of the Edwards hypothesis in the SherringtonKirkpatrick spin glass, Physical Review B, 74, 2006, p020406Journal Article, 2006, DOI , URL , TARA  Full Text
 Eastham, PR, Littlewood, PB, Finitesize fluctuations and photon statistics near the polariton condensation transition in a singlemode microcavity, Physical Review B, 73, 2006, p085306Journal Article, 2006, DOI , URL , TARA  Full Text
 Keeling, J, Eastham, PR, Szymanska, MH, Littlewood, PB, BCSBEC crossover in a system of microcavity polaritons, Physical Review B, 72, (11), 2005, p115320Journal Article, 2005, DOI , URL , TARA  Full Text
 Keeling, J, Eastham, PR, Szymanska, MH, Littlewood, PB, Polariton condensation with localized excitons and propagating photons, Physical Review Letters, 93, 2004, p226403Journal Article, 2004, DOI , URL , TARA  Full Text
 Eastham, PR, Whittaker, DM, Steady states of a chi(3) parametric oscillator with coupled polarizations, Physical Review B, 68, (7), 2003, p075324Journal Article, 2003, DOI , URL , TARA  Full Text
 Littlewood, PB, Brown, GJ, Eastham, PR, Szymanska, MH, Some remarks on the ground state of the exciton and excitonpolariton system, physica status solidi (b),, 234, 2002, p3649Journal Article, 2002, DOI
 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, p161310Journal Article, 2002, DOI , URL , TARA  Full Text
 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, p235101Journal Article, 2001, DOI , URL , TARA  Full Text
 Eastham, PR, Littlewood, PB, Bose condensation in a model microcavity, Solid State Communications, 116, (7), 2000, p357361Journal Article, 2000, DOI , URL , 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, pp554Conference Paper, 2009, DOI
 Quantum corrections to the Ising interactions in LiYxHo1xF4 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
 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  115Conference Paper, 2005, DOI , URL , 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, pS3597S3620Journal Article, 2004, DOI , URL , TARA  Full Text
 P. R. Eastham, M. H. Szymanska and P. B. Littlewood, Phaselocking in quantum and classical oscillators: polariton condensates, lasers, and arrays of Josephson junctions, Solid State Communications, 127, (2), 2003, p117  122Journal Article, 2003, DOI , URL , 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
 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, p195306Journal Article, 2010, DOI , URL , TARA  Full Text
 Brierley, RT, Eastham, PR, Finitemomentum condensation in a pumped microcavity, Physical Review B, 82, (3), 2010, p035317Journal Article, 2010, DOI , URL , 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  16485Journal Article, 2010, DOI , URL , 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 quantumdot systems for nonequilibrium BoseEinstein condensation, Journal of Physics: Conference Series , 245, (1), 2010, pp012059Conference Paper, 2010, DOI , URL , 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, p23680Journal Article, 2010, DOI , URL , TARA  Full Text
 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, p067401Journal Article, 2011, URL , TARA  Full Text
 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, p792125Journal Article, 2011, URL , TARA  Full Text
 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  2588Journal Article, 2011, DOI , URL , TARA  Full Text
 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, 2011Conference Paper, 2011, URL , TARA  Full Text
 R. T. Brierley, P. B. Littlewood and P. R. Eastham, Amplitudemode dynamics of polariton condensates, Physical Review Letters, 107, (4), 2011, p040401Journal Article, 2011, DOI , URL , 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, p165320Journal 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, p075018Journal Article, 2012, DOI , TARA  Full Text
 R. T. Brierley, C. Creatore, P. B. Littlewood and P. R. Eastham, Adiabatic state preparation of interacting twolevel systems, Physical Review Letters, 109, 2012, p043002Journal 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, p155442Journal 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, p1320113207Journal Article, 2012, DOI , TARA  Full Text
 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 offdiagonal longrange order in microcavity excitonpolaritons across the parametric threshold, Optics Express, 21, 2013, p10792Journal Article, 2013, DOI , TARA  Full Text
 P. R. Eastham, A. O. Spracklen and J. Keeling, Lindblad theory of dynamical decoherence of quantumdot excitons, Physical Review B, 87, 2013, p195306Journal Article, 2013, 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, p20394Journal Article, 2013, DOI
 A. Janot, T. Hyart, P. R. Eastham and B. Rosenow, Superfluid stiffness of a driven dissipative condensate with disorder, Physical Review Letters, 110, 2013, p230403Journal Article, 2013, DOI , URL , 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, p331Journal 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 tophat input beam, Optics Express, 22, (9), 2014, p11290Journal Article, 2014, DOI , TARA  Full Text
 Ballantine, KE, Donegan, JF, Eastham, PR, Conical diffraction and the dispersion surface of hyperbolic metamaterials, Physical Review A, 90, (1), 2014, p013803Journal Article, 2014, DOI , TARA  Full Text
 David Racine and P. R. Eastham, Quantum theory of multimode polariton condensation, Physical Review B, 90, 2014, p085308Journal Article, 2014, TARA  Full Text
 C. P. Dietrich, R. Johne, T. Michalsky, C. Sturm, P. Eastham, H. Franke, M. Lange, M. Grundmann, and R. SchmidtGrund, Parametric relaxation in whispering gallery mode excitonpolariton condensates, Physical Review B, 91, 2015, p041202(R)Journal Article, 2015, DOI , TARA  Full Text
 P. R. Eastham, Superfluidity in quantum Hall bilayers, Department Seminar, University of Cambridge, U.K., 11/2/2010, 2010Invited Talk
 D. Racine and P. R. Eastham, Quantum theory of a twomode polariton condensate, Physics by the Lake, Ambleside, U.K., 1/7/2010, 2010Poster
 P. R. Eastham, Superfluidity in quantum Hall bilayers, Fifth International Conference on Spontaneous Coherence in Excitons (ICSCE5), Lausanne, Switzerland, 1/2/2011, 2011Oral Presentation
 P. R. Eastham, Polariton lasing and condensation in semiconductor microcavities  coherence and dynamics, Department Seminar, University of Leipzig, 10/6/2011, 2011Invited Talk
 P. R. Eastham, Adiabatic control of manyparticle states in coupled quantum dots, International school of Nanophotonics and Photovoltaics, Maratea, Italy, 19/9/2011, 2011Invited Talk
 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, 2011Poster
 P. R. Eastham, Adiabatic control of manyparticle states in coupled quantum dots, Quantum Information and Condensed Matter Physics, Maynooth, 1/9/2011, 2011Invited Talk
 R. T. Brierley, C. Creatore, P. B. Littlewood and P. R. Eastham, Amplitudemode dynamics of polariton condensates, POLATOM, Crete, 1/9/2011, 2011Poster
 D. Racine and P. R. Eastham, Quantum theory of a twomode polariton condensate, Quantum Information and Condensed Matter Physics, Maynooth, 1/9/2011, 2011Poster
 P. R. Eastham, BoseEinstein condensates of excitons in quantum Hall bilayers, Department Seminar, University College Cork, 21/11/2011, 2011Invited Talk
 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, 2011Oral Presentation
 K. E. Ballantine and P. R. Eastham, Quantisation and conservation of angular momentum in nonuniformly polarised beams, Rosse medal research roundup, Dublin, 30/3/2012, 2012Poster
 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, 2012Oral Presentation
 R. T. Brierley, C. Creatore, P. B. Littlewood and P. R. Eastham, Adiabatic state preparation of interacting twolevel systems, Bulletin of the American Physical Society, American Physical Society (APS) March Meeting, Boston, 27/2/2012, 2012Oral Presentation
 D. Racine and P. R. Eastham, Quantum theory of multiple excitonpolariton Bose condensates, Sixth International Conference on Spontaneous Coherence in Excitons (ICSCE6), Stanford, 27/8/2012, 2012Poster
 K. E. Ballantine and P. R. Eastham, Quantisation and conservation of photon angular momentum in nonuniformly polarised beams, Photon 12, Durham U.K., 6/9/2012, 2012Oral Presentation
 C. Creatore, R. T. Brierley, P. B. Littlewood and P. R. Eastham, Adiabatic state preparation of interacting twolevel systems, Photon12, Durham U.K., 6/9/2012, 2012Oral Presentation
 C. Creatore, R. T. Brierley, P. B. Littlewood and P. R. Eastham, Adiabatic state preparation of interacting twolevel systems, POLATOM, Cambridge U.K., 9/9/2012, 2012Poster
 K. E. Ballantine and P. R. Eastham, Quantisation and conservation of photon angular momentum in nonuniformly polarised beams, POLATOM, Cambridge U.K., 9/9/2012, 2012Poster
 D. Racine and P. R. Eastham, Quantum theory of a twomode polariton condensate, POLATOM, Cambridge U.K., 9/9/2012, 2012Poster
 R. T. Brierley, P. B. Littlewood and P. R. Eastham, Amplitude oscillations in a nonequilibrium polariton condensate, Bulletin of the American Physical Society, American Physical Society (APS) March Meeting, Dallas, Texas, 25/03/2011, 2011Oral Presentation
 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, 2010Oral Presentation
 P. R. Eastham, BoseEinstein condensation in the quantum Hall bilayer, Universal Themes in BoseEinstein Condensation, Lorentz Center, Leiden, 13/3/2013, 2013Invited Talk
 A. Janot, T. Hyart, B. Rosenow and P. R. Eastham, Many body physics in open photonic systems: superfluidity and BoseEinstein condensation of polaritons, Photonics Ireland 2013, Belfast, 4/9/2013, 2013Poster
 P. R. Eastham, A. Janot, T. Hyart and B. Rosenow, Many body physics in open photonic systems: superfluidity and BoseEinstein condensation of polaritons, Thirteenth Conference on the Optics of Excitons in Confined Systems (OECS13), Rome, 12/9/2013, 2013Poster
 P. R. Eastham, Disorder and superfluidity in BoseEinstein condensates of polaritons, Department Seminar, University of St Andrews, 26/9/2013, 2013Invited Talk
 K. E. Ballantine and P. R. Eastham, Quantization and conservation of angular momentum in nonuniformly polarized beams, AMBER Launch, Dublin, 24/10/2013, 2013Poster
 P. R. Eastham, Alchemy isn't dead: discovering new particles in the freezer, TCD Physics Society Seminar, TCD, 21/11/2013, 2013Invited Talk
 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, 2013Invited Talk
 P. R. Eastham, Bose condensed polaritons: superfluid, normal fluid, or Bose glass? , Department Seminar, University of Michigan Ann Arbor, 25/02/2014, 2014Invited Talk
 P. R. Eastham, Macroscopic quantum coherence and superfluidity of excitonpolaritons, Irish Quantum Foundations Meeting, TCD, 30/05/2014, 2014Invited Talk
 P. R. Eastham, Quantum coherence, Department Seminar, School of Physics, TCD, 20/03/2015, 2015Invited Talk
 K. E. Ballantine, J. F. Donegan and P. R. Eastham, Dispersion surface of a biaxial hyperbolic metamaterial, Photonics Ireland 2015, Cork, 2/09/2015, 2015Poster
 F. Bello and P. R. Eastham, Dissipative selftrapping in BoseEinstein condensates, Photonics Ireland 2015, Cork, 2/09/2015, 2015Oral Presentation
 P. R. Eastham, P. Kirton, H. Cammack, B. W. Lovett, J. Keeling, Bathinduced coherence and the secular approximation, Photonics Ireland 2015, Cork, 2015Poster
 P. R. Eastham, Quantum coherence, Department Seminar, University College Cork, 9/11/2015, 2015Invited Talk
 P. R. Eastham, Spinning the 2D electromagnetic field: halfquantization of an optical angular momentum, Department Seminar, NUI Maynooth, 12/04/2016, 2016Invited Talk
 P. R. Eastham, Spinning the 2D electromagnetic field, International workshop on 2D materials, Campofelice di Roccella, Italy, 2/06/2016, 2016Invited Talk
 P. R. Eastham, Photons with half a twist: angular momentum and structured light, Advanced Laser Technologies 16, Galway, 12/09/2016, 2016Invited Talk
 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, 2016Oral Presentation
 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, 2016Invited Talk
 P. R. Eastham, Photons with half a twist: angular momentum and structured light, Department Seminar, Dublin City University, 8/12/2016, 2016Invited Talk
 P. R. Eastham, Platforms for quantum thermodynamics, QuantERA proposer's day, Valletta, Malta, 16/02/2017, 2017Poster
 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, 2017Poster
 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, 2017Invited Talk
 P. R. Eastham, F. Bello, The Josephson junction redux: nonequilibrium selftrapping in polariton condensates, Hybrid Photonics and Materials International Conference, Mykonos, Greece, 25/09/2017, 2017Invited Talk
 R. McGuinness and P. Eastham, Optical Chern insulators from conical refraction, Topical Research Meeting on Topological States in Strongly Interacting LightMatter Systems, Milton Keynes, U.K., 19/3/2018, 2018Oral Presentation
 R. McGuinness and P. Eastham, Optical Chern insulators from conical refraction, Irish Quantum Foundations, Dublin, 28/05/2018, 2018Oral Presentation
 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, 2018Poster
 John Moroney and P. R. Eastham, Synchronization in asymmetricallypumped polariton josephson junctions, Quantum Fluids of Light and Matter, Les Houches, France, 2018Poster
 C. Murphy and P. R. Eastham, Quantum thermal machines with a laser controlled quantum dot, Collective Behaviour in Quantum Matter, Trieste, Italy, 2018Poster
 C. N. Murphy and P. R. Eastham, Quantum control of excitons for reversible heat transfer, Polaron Day 2019, Vienna, 23/05/2019, 2019Oral Presentation
 John Moroney and P. R. Eastham, A nonequilibrium phase transition in a disordered chain of polariton condensates, PLMCN (Physics of Light Matter Coupling in Nanostructures), Online, 27/10/2020, 2020Oral Presentation
 P. R. Eastham and R. Mc Guinness, Topological photonics from strong lightmatter coupling in bulk semiconductors, Photonics Online Meetup, Online, 13/01/2021, 2021Poster
 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, 2020Poster
 Paul R. Eastham and Conor Murphy, Quantum control of solidstate qubits for thermodynamic applications, SPIE Photonics West, Photonic Heat Engines: Science and Applications III, Online, 5/03/2021, 2021, SPIEInvited Talk
 Maria Popovic, Mark T. Mitchison, Aidan Strathearn, Brendon W. Lovett, John Goold, Paul R. Eastham, Nonequilibrium quantum thermodynamics with time evolving matrix product operators (TEMPO), Second Workshop on Stochastic Thermodynamics, Online, 17th  21st May 2021, 2021Oral Presentation
 C. N. Murphy and P. R. Eastham, Laser Cooling of SiV Centres in Diamond to 1 K, Photonics Ireland 2021, Online, 1416 June 2021, 2021Oral Presentation
 John P. Moroney and P. R. Eastham, A nonequilibrium phase transition in disordered lattices of polariton condensates, Photonics Ireland 2021, Online, 1416 June 2021, 2021Poster
 Eoin Butler, Gerald Fux, Paul Eastham, Jonathan Keeling, Brendon Lovett, Optimal control of nonMarkovian systems using numerically exact methods, Photonics Ireland 2021, Online, 1416 June 2021, 2021Poster
 Eoin Butler, Gerald Fux, Paul Eastham, Brendon Lovett and Jonathan Keeling, Optimal control of nonMarkovian systems using numerically exact methods, Harnessing Quantum Matter Data Revolution Summer School, Online, 711 June 2021, 2021Poster
 John P. Moroney and Paul R. Eastham, A nonequilibrium phase transition in disordered lattices of polariton condensates, Collective Effects and NonEquilibrium Quantum Dynamics, Online, 2830 June, 2021Poster
 P. R. Eastham, E. O. Butler, G. Fux, J. Keeling, B. Lovett, Optimal control beyond the weakcoupling and Markovian regimes, CoCoNUT2021, Online, 2427 August 2021, 2021Oral Presentation
 Paul Eastham and John Moroney, Synchronization of coupled oscillators on finitedimensional lattices, APS March Meeting 2022, Chicago and Online, 1418 March 2022, 2022Oral Presentation
 Conor Murphy and Paul Eastham, Quantum thermodynamics and laser cooling with silicon vacancies in diamond, APS March Meeting 2022, Chicago and Online, 1418 March, 2022Poster
 Paul Eastham and John Moroney, Coherence and synchronization for drivendissipative condensates in a random potential, ICSCE 11, Burlington, Vermont., 711/08/2022, 2022Oral Presentation
 Luísa Toledo Tude and Paul Eastham, A model for thermodynamics analysis of polariton condensation, ICSCE 11, Burlington, Vermont, 711/08/2022, 2022Poster
 P. R. Eastham, Polariton superflows: are they dissipationless?, OECS18, Lecce, Italy, 12th16th June 2023, 2023Oral Presentation
 Luisa Toledo Tude and Paul Eastham, A model for thermodynamic analysis of polariton condensation, PLMCN 2023, Medellin, Colombia, 2023Oral Presentation
 Luisa Toledo Tude and Paul Eastham, Polariton condensates and the second law of thermodynamics, OECS18, Lecce, Italy, 2023Poster
 P. R. Eastham, Optimal control and inverse design with process tensors, International Quantum Tensor Network Meeting "NonMarkovian Dynamics", New York, 1517 September 2023, 2023Invited Talk
 P. R. Eastham, GPEs, coupled oscillators, and KPZ equations: connections and differences, Trends in Polaritonics, Moscow and Online, 3031 May 2024, 2024Invited Talk
 P. R. Eastham, GPEs, coupled oscillators, and KPZ equations: connections and differences, Skoletch Seminar Series, Online, 20/06/2024, 2024Invited Talk
 Luisa Toledo Tude and P. R. Eastham, Drivendissipative condensates and the second law of thermodynamics, ICSCE 12, Dublin, 1014 June 2024, 2024Oral Presentation
Research Expertise
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 manyparticle physics and quantum coherence, and the exotic collective behaviours that can result, like BoseEinstein 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 condensedmatter, decoherence and quantum control in solidstate qubits, and photonic materials. My work is primarily theoretical, but I work closely with experimentalists to ensure its relevance and increase its impact.

TitleStrong interactions and collective effects in semiconductor optoelectronicsSummaryDevelopment of theoretical tools to model collective behaviour in semiconductor optics.Funding AgencySFIDate From2009Date To2013

TitleCoherent matter in semiconductor microcavities: nonequilibrium polariton condensatesSummaryAims to implement a new approach to creating polariton condensates in highly nonequilibrium semiconductors, and to develop new techniques for precisely controlling electrons in semiconductors.Funding AgencyEPSRC UKDate From2008Date To2011

TitleSidney Sussex College Junior Research FellowshipSummaryDate From2001Date To2004
Recognition
 Institute of Physics
 American Association for the Advancement of Science