An open quantum system, the time evolution of which is governed by a master equation, can be driven into a given pure quantum state by an appropriate design of the coupling between the system and the reservoir. This provides a route towards preparing many-body states and non-equilibrium quantum phases by quantum-reservoir engineering. Here, we discuss the example of a driven dissipative Bose–Einstein condensate of bosons and of paired fermions, where atoms in an optical lattice are coupled to a bath of Bogoliubov excitations and the atomic current represents local dissipation. In the absence of interactions, the lattice gas is driven into a pure state with long-range order. Weak interactions lead to a weakly mixed state, which in three dimensions can be understood as a depletion of the condensate, and in one and two dimensions exhibits properties reminiscent of a Luttinger liquid or a Kosterlitz–Thouless critical phase at finite temperature, with the role of the ‘finite temperature’ taken by the interactions.
%0 Journal Article
%1 diehl2008quantum
%A Diehl, S.
%A Micheli, A.
%A Kantian, A.
%A Kraus, B.
%A Büchler, Hans Peter
%A Zoller, P.
%D 2008
%J Nature Physics
%K itp3 myown
%P 878–883
%R 10.1038/nphys1073
%T Quantum states and phases in driven open quantum systems with cold atoms
%U http://dx.doi.org/10.1038/nphys1073
%V 4
%X An open quantum system, the time evolution of which is governed by a master equation, can be driven into a given pure quantum state by an appropriate design of the coupling between the system and the reservoir. This provides a route towards preparing many-body states and non-equilibrium quantum phases by quantum-reservoir engineering. Here, we discuss the example of a driven dissipative Bose–Einstein condensate of bosons and of paired fermions, where atoms in an optical lattice are coupled to a bath of Bogoliubov excitations and the atomic current represents local dissipation. In the absence of interactions, the lattice gas is driven into a pure state with long-range order. Weak interactions lead to a weakly mixed state, which in three dimensions can be understood as a depletion of the condensate, and in one and two dimensions exhibits properties reminiscent of a Luttinger liquid or a Kosterlitz–Thouless critical phase at finite temperature, with the role of the ‘finite temperature’ taken by the interactions.
@article{diehl2008quantum,
abstract = {An open quantum system, the time evolution of which is governed by a master equation, can be driven into a given pure quantum state by an appropriate design of the coupling between the system and the reservoir. This provides a route towards preparing many-body states and non-equilibrium quantum phases by quantum-reservoir engineering. Here, we discuss the example of a driven dissipative Bose–Einstein condensate of bosons and of paired fermions, where atoms in an optical lattice are coupled to a bath of Bogoliubov excitations and the atomic current represents local dissipation. In the absence of interactions, the lattice gas is driven into a pure state with long-range order. Weak interactions lead to a weakly mixed state, which in three dimensions can be understood as a depletion of the condensate, and in one and two dimensions exhibits properties reminiscent of a Luttinger liquid or a Kosterlitz–Thouless critical phase at finite temperature, with the role of the ‘finite temperature’ taken by the interactions.},
added-at = {2019-02-04T16:35:25.000+0100},
author = {Diehl, S. and Micheli, A. and Kantian, A. and Kraus, B. and Büchler, Hans Peter and Zoller, P.},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/25c7b5c8b4bbe6d458d599f84f50b2821/buechler},
doi = {10.1038/nphys1073},
interhash = {e2a46a4c1b525dbea64e460028dc2e82},
intrahash = {5c7b5c8b4bbe6d458d599f84f50b2821},
journal = {Nature Physics},
keywords = {itp3 myown},
month = {September},
pages = {878–883},
timestamp = {2019-02-04T15:35:25.000+0100},
title = {Quantum states and phases in driven open quantum systems with cold atoms},
url = {http://dx.doi.org/10.1038/nphys1073},
volume = 4,
year = 2008
}
