Optical measurements of the condensate phase

Physical Review A - Atomic, Molecular, and Optical Physics

Volumn 55, Issue 2, 1997, Pages R849-R852

  Imamog barlu, A ^a   Kennedy, T A B ^b  

^a University of California   (United States)

^b GEORGIA INSTITUTE OF TECHNOLOGY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 2542466789     PISSN: 10502947     EISSN: 10941622     Source Type: Journal    
DOI: 10.1103/PhysRevA.55.R849     Document Type: Article

References (9)

1. For a review of condensation effects, see Bose-Einstein Condensation, edited by A. Griffin, D. W. Snoke, and S. Stringari (Cambridge, New York, 1995).
2. A. Griffin, Excitations in a Bose-Condensed Liquid (Cambridge, New York, 1993).
3. J. Javanainen, Phys. Rev. Lett. 75, 1927(1995).
4. J. Javanainen and J. Ruostekoski, Phys. Rev. A 52, 3033(1995).
5. Continuous quantum measurements may be regarded as a sequence of imprecise measurements [C. W. Gardiner, Quantum Noise (Springer, Berlin, 1991)], continuously localizing the wave function around an eigenstate of the measured observable, irrespective of the initial state. Even though the case of homodyne or heterodyne measurements is more tricky, similar conclusions do apply to the mean values [H. Wiseman and G. Milburn, Phys. Rev. A 47, 642 (1993)]. In our case, each spontanoeusly emitted photon (detected by heterodyne measurement) will provide partial information about the relative phase of the two condensates and weakly localize the system wave function around a (random) relative phase state. A similar result for interference experiments between two independent atomic condensates is obtained by Y. Castin and J. Dalibard (unpublished).
6. J. Javanainen and Sung Mi Yoo, Phys. Rev. Lett. 76, 161(1996).
7. I. Cirac and M. Lewenstein, Phys. Rev. A 53, 2466 (1996).
8. L. You, M. Lewenstein, R. J. Glauber, and J. Cooper, Phys. Rev. A 53, 329(1996).
9. O. Kocharovskaya and P. Mandel, Phys. Rev. A 42, 523(1990).