Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Collett, M. J."'
Autor:
Kruglov, V I, Collett, M J
We present a full set of wave equations describing a dense Bose fluid, applicable both to non- ideal gases and to liquid 4He. The phonon spectrum in liquid 4He is found and the fraction of condensed particles is calculated at zero temperature for a w
Externí odkaz:
http://arxiv.org/abs/1307.7453
Publikováno v:
Phys. Rev. Lett. 102, 230501 (2009)
Requirements for the successful teleportation of a beam of light, including its temporal correlations, are discussed. Explicit expressions for the degrees of first- and second-order optical coherence are derived. Teleportation of an antibunched photo
Externí odkaz:
http://arxiv.org/abs/0810.0565
Publikováno v:
Proceedings of the 9th Rochester Conference on Coherence and Quantum Optics, University of Rochester, Rochester, NY, June 10-15, 2007
The resonant heating of a harmonically trapped ion by a standing-wave light field is described as a quantum stochastic process combining a coherent Schroedinger evolution with Bohr-Einstein quantum jumps. Quantum and semi-quantum treatments are compa
Externí odkaz:
http://arxiv.org/abs/0711.1406
Autor:
Kruglov, V. I., Collett, M. J.
We have proposed a model of roton cluster excitations in liquid helium~II based on a Schr\"odinger-type equation with a self-consistent confining potential. We have derived an equation for the number of atoms in roton excitations, which can be treate
Externí odkaz:
http://arxiv.org/abs/cond-mat/0605442
Publikováno v:
Phys. Rev. A. 68, 063611 (2003)
We present a steady state analysis of a quantum-mechanical model of an atom laser. A single-mode atomic trap coupled to a continuum of external modes is driven by a saturable pumping mechanism. In the dilute flux regime, where atom-atom interactions
Externí odkaz:
http://arxiv.org/abs/cond-mat/0210688
We demonstrate a method which allows the stochastic modelling of quantum systems for which the generalised Fokker-Planck equation in the phase space contains derivatives of higher than second order. This generalises quantum stochastics far beyond the
Externí odkaz:
http://arxiv.org/abs/quant-ph/0108128
We describe quantum-field-theoretical (QFT) techniques for mapping quantum problems onto c-number stochastic problems. This approach yields results which are identical to phase-space techniques [C.W. Gardiner, {\em Quantum Noise} (1991)] when the lat
Externí odkaz:
http://arxiv.org/abs/cond-mat/0102483
We present a fully quantum mechanical treatment of a single-mode atomic cavity with a pumping mechanism and an output coupling to a continuum of external modes. This system is a schematic description of an atom laser. In the dilute limit where atom-a
Externí odkaz:
http://arxiv.org/abs/cond-mat/9907023
We present a non-Markovian quantum trajectory method for treating atoms radiating into a reservoir with a non-flat density of states. The results of an example numerical simulation of the case where the free space modes of the reservoir are altered b
Externí odkaz:
http://arxiv.org/abs/quant-ph/9902032
We present a fully quantum mechanical treatment of a single mode atom laser including pumping and output coupling. By ignoring atom-atom interactions, we have solved this model without making the Born-Markov approximation. We find substantially less
Externí odkaz:
http://arxiv.org/abs/quant-ph/9901073