### Abstract

Language | English |
---|---|

Pages | 1175-1184 |

Number of pages | 9 |

Journal | Journal of Modern Optics |

Volume | 49 |

Issue number | 7 |

DOIs | |

Publication status | Published - 15 Jun 2002 |

### Fingerprint

### Keywords

- optics
- physics
- atom
- atomic
- quantum
- quantum mechanics
- probability
- Jaynes-Cummings
- electromagnetic

### Cite this

*Journal of Modern Optics*,

*49*(7), 1175-1184. https://doi.org/10.1080/09500340110100592

}

*Journal of Modern Optics*, vol. 49, no. 7, pp. 1175-1184. https://doi.org/10.1080/09500340110100592

**Retrodiction with two-level atoms: atomic previvals.** / Barnett, S.M.; Pegg, D.; Jeffers, J.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Retrodiction with two-level atoms: atomic previvals

AU - Barnett, S.M.

AU - Pegg, D.

AU - Jeffers, J.

PY - 2002/6/15

Y1 - 2002/6/15

N2 - In the Jaynes-Cummings model a two-level atom interacts with a single-mode electromagnetic field. Quantum mechanics predicts collapses and revivals in the probability that a measurement will show the atom to be excited at various times after the initial preparation of the atom and field. In retrodictive quantum mechanics we seek the probability that the atom was prepared in a particular state given the initial state of the field and the outcome of a later measurement on the atom. Although this is not simply the time reverse of the usual predictive problem, we demonstrate in this paper that retrodictive collapses and revivals also exist. We highlight the differences between predictive and retrodictive evolutions and describe an interesting situation where the prepared state is essentially unretrodictable.

AB - In the Jaynes-Cummings model a two-level atom interacts with a single-mode electromagnetic field. Quantum mechanics predicts collapses and revivals in the probability that a measurement will show the atom to be excited at various times after the initial preparation of the atom and field. In retrodictive quantum mechanics we seek the probability that the atom was prepared in a particular state given the initial state of the field and the outcome of a later measurement on the atom. Although this is not simply the time reverse of the usual predictive problem, we demonstrate in this paper that retrodictive collapses and revivals also exist. We highlight the differences between predictive and retrodictive evolutions and describe an interesting situation where the prepared state is essentially unretrodictable.

KW - optics

KW - physics

KW - atom

KW - atomic

KW - quantum

KW - quantum mechanics

KW - probability

KW - Jaynes-Cummings

KW - electromagnetic

UR - http://arxiv.org/PS_cache/quant-ph/pdf/0207/0207175v1.pdf

U2 - 10.1080/09500340110100592

DO - 10.1080/09500340110100592

M3 - Article

VL - 49

SP - 1175

EP - 1184

JO - Journal of Modern Optics

T2 - Journal of Modern Optics

JF - Journal of Modern Optics

SN - 0950-0340

IS - 7

ER -