Continuous measurement with traveling-wave probes

被引：36

作者：

Silberfarb, A ^{[1
]}

Deutsch, IH ^{[1
]}

机构：

[1] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA

来源：

PHYSICAL REVIEW A | 2003年 / 68卷 / 01期

关键词：

D O I：

10.1103/PhysRevA.68.013817

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We consider the use of a traveling-wave probe to continuously measure the quantum state of an atom in free space. Unlike the more familiar cavity QED geometry, the traveling wave is intrinsically a multimode problem. Using an appropriate modal decomposition, we determine the effective measurement strength for different atom-field interactions and different initial states of the field. These include the interaction of a coherent-state pulse with an atom, the interaction of a Fock-state pulse with an atom, and the use of Faraday rotation of a polarized laser probe to perform a quantum nondemolition measurement on an atomic spin.

引用

页数：9

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