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16 papers · 1 filter
Temperature Variation of Ultra Slow Light in a Cold Gas
G. Morigi, G. S. Agarwal
A model is developed to explain the temperature dependence of the group velocity as observed in the experiments of Hau et al (Nature {\bf397}, 594 (1999)). The group velocity is qu…
Residual Symmetries in the Spectrum of Periodically Driven Alkali Rydberg States
Andreas Krug, Andreas Buchleitner
We identify a fundamental structure in the spectrum of microwave driven alkali Rydberg states, which highlights the remnants of the Coulomb symmetry in the presence of a non-hydrog…
Investigations of a two-mode atom laser model
Jens Schneider, Axel Schenzle
Atom lasers based on rf-outcoupling from a trapped Bose-Einstein condensate can be described by a set of generalized, coupled Gross-Pitaevskii equations (GPE). If not only one but…
On mechanisms that enforce complementarity
Berthold-Georg Englert, Marlan O. Scully, Herbert Walther
In a recent publication Luis and Sanchez-Soto arrive at the conclusion that complementarity is universally enforced by random classical phase kicks. We disagree. One could just as…
Quantum systems coupled to a structured reservoir with multiple excitations
Georgios M. Nikolopoulos, Søren Bay, P. Lambropoulos
We present a method for dealing with quantum systems coupled to a structured reservoir with any density of modes and with more than one excitation. We apply the method to a two-lev…
Quantitative wave-particle duality and non-erasing quantum erasure
Peter D. D. Schwindt, Paul G. Kwiat, Berthold-Georg Englert
The notion of wave-particle duality may be quantified by the inequality V^2+K^2 <=1, relating interference fringe visibility V and path knowledge K. With a single-photon interferom…