Abstract
This paper shows that an arbitrary Gaussian pure state can be deterministically generated in a dissipative open system that has quasilocal interactions between the subsystems and couples to the surrounding environment in a local manner. A quasilocal interaction, which means that the interaction occurs among only a few subsystems, is a crucial requirement for practical engineering of a dissipative system. The key idea is that first an auxiliary system having a local interaction with the environment is prepared and then that auxiliary system is coupled to the underlying target system via a set of two-body Hamiltonians in such a way that a desired pure state is generated. Moreover, we show that even with a simple single-mode auxiliary system, the deterministic generation of an arbitrary approximate Gaussian cluster state is possible by devising an appropriate switching scheme. We discuss in a specific example how much a dissipation-induced pure Gaussian state can be perturbed by decoherence and parameter error.
Original language | English |
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Article number | 033802 |
Journal | Physical Review A - Atomic, Molecular, and Optical Physics |
Volume | 87 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2013 Mar 1 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics