Abstract
A new effect—light backscattering from exciton Bose-condensate—is considered. This effect is connected with the photoinduced coherent recombination of two excitons in the condensate with the production of two photons with opposite momenta. The effect of two-exciton coherent recombination leads also to the appearance of the second-order coherence in exciton luminescence connected with squeezing between photon states with opposite momenta. The estimations given for Cu2O and GaAs excitons show that the effect of stimulated light backscattering can be detected experimentally. Moreover, in the system of 2D excitons in coupled quantum wells, the effect of stimulated anomalous light transmission must also take place. Anologous effects can also take place in systems of Bose-condensed atoms in excited (but metastable) states.
Similar content being viewed by others
References
Bose-Einstein Condensation, Ed. by A. Griffin, D. W. Snoke, and S. Stringari (Cambridge Univ. Press, Cambridge, 1995); S. A. Moskalenko and D. W. Snoke, Bose-Einstein Condensation of Excitons and Biexcitons and Coherent Nonlinear Optics with Excitons (Cambridge Univ. Press, New York, 2000).
A. L. Ivanov, H. Haug, and L. V. Keldysh, Phys. Rep. 296, 237 (1998); L. V. Keldysh and Yu. V. Kopaev, Fiz. Tverd. Tela (Leningrad) 6, 2791 (1964) [Sov. Phys. Solid State 6, 2219 (1965)]; A. N. Kozlov and L. A. Maximov, Zh. Éksp. Teor. Fiz. 48, 1184 (1965) [Sov. Phys. JETP 21, 790 (1965)]; V. A. Gergel, R. F. Kazarinov, and R. A. Suris, Zh. Éksp. Teor. Fiz. 53, 544 (1967) [Sov. Phys. JETP 26, 354 (1968)]; B. I. Halperin and T. M. Rice, Solid State Phys. 21, 115 (1968); L. V. Keldysh and A. N. Kozlov, Zh. Éksp. Teor. Fiz. 54, 978 (1968) [Sov. Phys. JETP 27, 521 (1968)]; E. Hanamura and H. Haug, Phys. Rep. 33, 209 (1977).
Yu. E. Lozovik and O. L. Berman, Pis’ma Zh. Éksp. Teor. Fiz. 64, 526 (1996) [JETP Lett. 64, 573 (1996)]]; Yu. E. Lozovik, O. L. Berman, and V. G. Tsvetus, Phys. Rev. B 59, 5627 (1999) and references therein.
L. V. Butov and I. V. Filin, Phys. Rev. B 58, 1980 (1998).
P. Kner, S. Bar-Ad, M. V. Marquezini, et al., Phys. Rev. B 60, 4731 (1999).
J.-P. Cheng, J. Kono, B. D. McCombe, et al., Phys. Rev. Lett. 74, 450 (1995).
D. W. Snoke, J. P. Wolf, and A. Mysyrowicz, Phys. Rev. Lett. 64, 2543 (1990); E. Fortin, S. Fafard, and A. Mysyrowicz, Phys. Rev. Lett. 70, 3951 (1993); E. Benson, E. Fortin, and A. Mysyrowicz, Solid State Commun. 101, 313 (1997).
A. V. Larionov, V. B. Timofeev, J. Hvam, et al., Pis’ma Zh. Éksp. Teor. Fiz. 71, 174 (2000) [JETP Lett. 71, 117 (2000)]; A. V. Larionov and V. B. Timofeev, Pis’ma Zh. Éksp. Teor. Fiz. 73, 342 (2001) [JETP Lett. 73, 301 (2001)].
M. Inoue and E. Hanamura, J. Phys. Soc. Jpn. 41, 1273 (1976); H. Shi, G. Verechaka, and A. Griffin, Phys. Rev. B 50, 1119 (1994).
Yu. E. Lozovik and A. V. Poushnov, Phys. Rev. B 58, 6608 (1998).
Author information
Authors and Affiliations
Additional information
From Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 74, No. 5, 2001, pp. 318–322.
Original English Text Copyright © 2001 by Lozovik, Ovchinnikov.
This article was submitted by the authors in English.