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 |
|---|---|
| Article number | 033802 |
| Journal | Physical Review A - Atomic, Molecular, and Optical Physics |
| Volume | 87 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2013 Mar 1 |
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ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
Cite this
Deterministic generation of Gaussian pure states in a quasilocal dissipative system. / Ikeda, Yusuke; Yamamoto, Naoki.
In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 87, No. 3, 033802, 01.03.2013.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Deterministic generation of Gaussian pure states in a quasilocal dissipative system
AU - Ikeda, Yusuke
AU - Yamamoto, Naoki
PY - 2013/3/1
Y1 - 2013/3/1
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevA.87.033802
DO - 10.1103/PhysRevA.87.033802
M3 - Article
VL - 87
JO - Physical Review A
JF - Physical Review A
SN - 2469-9926
IS - 3
M1 - 033802
ER -