Bose-Einstein condensation of excitons and polaritons

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Coupled Quantum Wells + + - - large spatial separation gives long exciton lifetime. (Lozovik and Yudson 1975) Lozovik and Berman, JETP 84, 1027 (1997): overall repulsion when D > 3a B
Tradeoff: binding energy decreases as well width increases 100 Å GaAs wells: total D = 100 + 40 + 100 = 240 Å need Ry >> E disorder, k BT binding energy 4 meV lifetime ~ 10 µs! M. Szymanska (Cambridge)
Page 1 and 2: Exciton and Polariton Condensates O
Page 3 and 4: Prehistory of exciton BEC early, in
Page 5: Cu 2 O excitons Snoke et al, 1987
Page 9 and 10: Measurements of exciton drift/diffu
Page 11 and 12: strong dipole-dipole repulsion of i
Page 13 and 14: Timofeev et al. (many JETP) micro-P
Page 15 and 16: strain (arb. units) Trapping excito
Page 17 and 18: E% Equilibrium in trap: blue shift
Page 19 and 20: Temperature series-- spatial images
Page 21 and 22: General considerations for coupled
Page 23 and 24: Cavity Polaritons ! cavity photon:
Page 25 and 26: Typical wafer properties • Wedge
Page 27 and 28: Do the polaritons really move? Drif
Page 29 and 30: Four types of pumping: E k electron
Page 31 and 32: Spatial profiles of polariton lumin
Page 33 and 34: Unstressed-- weakly coupled Angle-r
Page 35 and 36: Momentum distribution of polaritons
Page 37 and 38: Occupation number vs. Energy Tail i
Page 39 and 40: Three regimes: polaritons near equi
Page 41 and 42: phonon scattering totally inadequat
Page 43 and 44: Splitting of bright exciton states
Page 45 and 46: phase locking via interactions E -1
Page 47 and 48: Weak coupling turns off Rabi splitt
Page 49 and 50: Our results for resonant, non-trapp
Page 51 and 52: Resonant, non-trapped Intensity vs.
Page 53 and 54: Angle-resolved spectra Stress trap,
Page 55 and 56: Angle-resolved spectrum Unstressed,
Page 57 and 58:
Botao Zhang Nick Sinclair Annie Wan
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Bose-Einstein condensation of excitons and polaritons

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