### Abstract

The decoherence of superpositions of macroscopically distinct quantum states in a system of two level atoms in the thermal photon modes was investigated. The Schmidt decomposition and the linear entropy were used to show that the atomic coherent states are robust against decoherence at zero and nonzero temperatures. The Wigner function images of the decoherence of a four component cat state were presented to show that the environment preserves symmetric superpositions much longer than the others.

Original language | English |
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Pages (from-to) | 338071-338078 |

Number of pages | 8 |

Journal | Physical Review A |

Volume | 63 |

Issue number | 3 |

Publication status | Published - Mar 2001 |

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### ASJC Scopus subject areas

- Atomic and Molecular Physics, and Optics
- Physics and Astronomy(all)

### Cite this

*Physical Review A*,

*63*(3), 338071-338078.

**Rapid and slow decoherence in conjunction with dissipation in a system of two-level atoms.** / Földi, P.; Czirják, A.; Benedict, M.

Research output: Contribution to journal › Article

*Physical Review A*, vol. 63, no. 3, pp. 338071-338078.

}

TY - JOUR

T1 - Rapid and slow decoherence in conjunction with dissipation in a system of two-level atoms

AU - Földi, P.

AU - Czirják, A.

AU - Benedict, M.

PY - 2001/3

Y1 - 2001/3

N2 - The decoherence of superpositions of macroscopically distinct quantum states in a system of two level atoms in the thermal photon modes was investigated. The Schmidt decomposition and the linear entropy were used to show that the atomic coherent states are robust against decoherence at zero and nonzero temperatures. The Wigner function images of the decoherence of a four component cat state were presented to show that the environment preserves symmetric superpositions much longer than the others.

AB - The decoherence of superpositions of macroscopically distinct quantum states in a system of two level atoms in the thermal photon modes was investigated. The Schmidt decomposition and the linear entropy were used to show that the atomic coherent states are robust against decoherence at zero and nonzero temperatures. The Wigner function images of the decoherence of a four component cat state were presented to show that the environment preserves symmetric superpositions much longer than the others.

UR - http://www.scopus.com/inward/record.url?scp=0035279645&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035279645&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0035279645

VL - 63

SP - 338071

EP - 338078

JO - Physical Review A

JF - Physical Review A

SN - 2469-9926

IS - 3

ER -