Dissipationless Flow and Sharp Threshold of a Polariton Condensate with Long Lifetime

We report new results of Bose-Einstein condensation of polaritons in specially designed microcavities with a very high quality factor, on the order of 10, giving polariton lifetimes of the order of 100 ps. When the polaritons are created with an incoherent pump, a dissipationless, coherent flow of the polaritons occurs over hundreds of microns, which increases as density increases. At high density, this flow is suddenly stopped, and the gas becomes trapped in a local potential minimum, with strong coherence.

[1]  C. Ciuti.  Quantum fluids of light , 2012, 2014 Conference on Lasers and Electro-Optics (CLEO) - Laser Science to Photonic Applications.

[2]  M. Steger,et al.  Long-range ballistic motion and coherent flow of long-lifetime polaritons , 2013, 1310.1798.

[3]  J. Baumberg,et al.  Optical superfluid phase transitions and trapping of polariton condensates. , 2013, Physical review letters.

[4]  Aephraim M. Steinberg,et al.  Dynamic Stark effect in strongly coupled microcavity exciton polaritons. , 2012, Physical review letters.

[5]  D. Snoke.  Polariton Condensation and Lasing , 2012, 1205.5756.

[6]  H. Saito,et al.  Benard-von Karman vortex street in an exciton-polariton superfluid , 2012, 1205.1611.

[7]  M. Kamp,et al.  All-optical control of quantized momenta on a polariton staircase , 2012 .

[8]  S. Höfling,et al.  Characterization of two-threshold behavior of the emission from a GaAs microcavity , 2012 .

[9]  P. S. Eldridge,et al.  Polariton ring condensates and sunflower ripples in an expanding quantum liquid , 2012, Physical Review B.

[10]  J. Baumberg,et al.  Sculpting oscillators with light within a nonlinear quantum fluid , 2011, Nature Physics.

[11]  D. Sanvitto,et al.  Exciton Polaritons in Microcavities , 2012 .

[12]  Y. Léger,et al.  From single particle to superfluid excitations in a dissipative polariton gas. , 2011, Physical review letters.

[13]  S. Höfling,et al.  From polariton condensates to highly photonic quantum degenerate states of bosonic matter , 2011, Proceedings of the National Academy of Sciences.

[14]  V. G. Sala,et al.  Polariton Superfluids Reveal Quantum Hydrodynamic Solitons , 2011, Science.

[15]  A. Kavokin,et al.  Probing the dynamics of spontaneous quantum vortices in polariton superfluids. , 2010, Physical review letters.

[16]  D. Snoke,et al.  Numerical simulations of the polariton kinetic energy distribution in GaAs quantum-well microcavity structures , 2010 .

[17]  Hartmut Haug,et al.  Exciton-polariton Bose-Einstein condensation , 2010 .

[18]  Isabelle Sagnes,et al.  Spontaneous formation and optical manipulation of extended polariton condensates , 2010, 1004.4084.

[19]  B. Piętka,et al.  Coherent oscillations in an exciton-polariton Josephson junction. , 2010, Physical review letters.

[20]  K. West,et al.  Lasing and polariton condensation: Two distinct transitions in GaAs microcavities with stress traps , 2009 .

[21]  M. S. Skolnick,et al.  Collective fluid dynamics of a polariton condensate in a semiconductor microcavity , 2009, Nature.

[22]  K. West,et al.  Role of the stress trap in the polariton quasiequilibrium condensation in GaAs microcavities , 2008, 0808.1861.

[23]  D. Snoke,et al.  Stability of a Bose-Einstein condensate revisited for composite bosons , 2008, 0810.0686.

[24]  Sven Höfling,et al.  Observation of Bogoliubov excitations in exciton-polariton condensates , 2008 .

[25]  M. S. Skolnick,et al.  Intrinsic decoherence mechanisms in the microcavity polariton condensate. , 2008, Physical review letters.

[26]  D. Snoke,et al.  Theory of Bose-Einstein condensation and superfluidity of two-dimensional polaritons in an in-plane harmonic potential , 2008, 0803.3239.

[27]  I. Carusotto,et al.  Spatial and spectral shape of inhomogeneous nonequilibrium exciton-polariton condensates , 2007, 0707.1016.

[28]  K. West,et al.  Bose-Einstein Condensation of Microcavity Polaritons in a Trap , 2007, Science.

[29]  G. Baym,et al.  Superfluid transition of homogeneous and trapped two-dimensional Bose gases , 2007, Proceedings of the National Academy of Sciences.

[30]  V. Savona,et al.  Bose–Einstein condensation of exciton polaritons , 2006, Nature.

[31]  Rudolf Hey,et al.  Quantum degenerate exciton-polaritons in thermal equilibrium. , 2006, Physical review letters.

[32]  D. Snoke,et al.  Actively tuned and spatially trapped polaritons , 2005, cond-mat/0507539.

[33]  J. Kasprzak,et al.  Spontaneous coherent phase transition of polaritons in CdTe microcavities. , 2005, Physical review letters.

[34]  A. Kavokin,et al.  Polariton acceleration in a microcavity wedge , 2001 .

[35]  Wolfgang Ketterle,et al.  Bose-Einstein Condensation: Identity Crisis for Indistinguishable Particles , 2007 .

[36]  C. Wieman,et al.  Bose-Einstein Condensation , 1995 .