Zobrazeno 1 - 10
of 108
pro vyhledávání: '"Walls, D. F."'
We consider effects of motion in cavity quantum electrodynamics experiments where single cold atoms can now be observed inside the cavity for many Rabi cycles. We discuss the timescales involved in the problem and the need for good control of the ato
Externí odkaz:
http://arxiv.org/abs/quant-ph/9904045
The possibility of determining the state of a quantum system after a continuous measurement of position is discussed in the framework of quantum trajectory theory. Initial lack of knowledge of the system and external noises are accounted for by consi
Externí odkaz:
http://arxiv.org/abs/quant-ph/9903030
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
The regions of validity of the Markov approximation for the coupling of atoms out of an atomic trap are determined. We consider radio-frequency output coupling in the presence of gravity and collisional repulsion, and Raman output coupling. The Marko
Externí odkaz:
http://arxiv.org/abs/cond-mat/9810413
Autor:
Steel, M. J., Olsen, M. K., Plimak, L. I., Drummond, P. D., Tan, S. M., Collett, M. J., Walls, D. F., Graham, R.
We introduce the study of dynamical quantum noise in Bose-Einstein condensates through numerical simulation of stochastic partial differential equations obtained using phase space representations. We derive evolution equations for a single trapped co
Externí odkaz:
http://arxiv.org/abs/cond-mat/9807349
We present a formulation of non-Markovian quantum trajectories for open systems from a measurement theory perspective. In our treatment there are three distinct ways in which non-Markovian behavior can arise; a mode dependent coupling between bath (r
Externí odkaz:
http://arxiv.org/abs/quant-ph/9807028
We present a generic model of an atom laser by including a pump and loss term in the Gross-Pitaevskii equation. We show that there exists a threshold for the pump above which the mean matter field assumes a non-vanishing value in steady-state. We stu
Externí odkaz:
http://arxiv.org/abs/cond-mat/9806287
Publikováno v:
Europhys. Lett., v. 43, pp. 641-647 (1998)
Matsubara Green's functions for interacting bosons are expressed as classical statistical averages corresponding to a linear imaginary-time stochastic differential equation. This makes direct numerical simulations applicable to the study of equilibri
Externí odkaz:
http://arxiv.org/abs/cond-mat/9712194