2004年10月
Kraus representation of a damped harmonic oscillator and its application
PHYSICAL REVIEW A
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- 巻
- 70
- 号
- 4
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1103/PhysRevA.70.042308
- 出版者・発行元
- AMER PHYSICAL SOC
By definition, the Kraus representation of a harmonic oscillator suffering from the environment effect, modeled as the amplitude damping or the phase damping, is directly given by a simple operator algebra solution. As examples and applications, we first give a Kraus representation of a single qubit whose computational basis states are defined as bosonic vacuum and single particle number states. We further discuss the environment effect on qubits whose computational basis states are defined as the bosonic odd and even coherent states. The environment effects on entangled qubits defined by two different kinds of computational basis are compared with the use of fidelity.
- リンク情報
- ID情報
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- DOI : 10.1103/PhysRevA.70.042308
- ISSN : 2469-9926
- eISSN : 2469-9934
- Web of Science ID : WOS:000225322500028