Quantum nondemolition measurement of photon number via optical Kerr effect in an ultra-high- Q microtoroid cavity

Yun Feng Xiao, Şahin Kaya Özdemir, Venkat Gaddam, Chun Hua Dong, Nobuyuki Imoto, Lan Yang

Research output: Contribution to journalArticlepeer-review

63 Scopus citations

Abstract

We theoretically investigate a quantum nondemolition (QND) measurement with optical Kerr effect in an ultra-high-Q microtoroidal system. The analytical and numerical results predict that the present QND measurement scheme possesses a high sensitivity, which allows for detecting few photons or even single photons. Ultra-high-Q toroidal microcavity may provide a novel experimental platform to study quantum physics with nonlinear optics at low light levels.

Original languageEnglish (US)
Pages (from-to)21462-21475
Number of pages14
JournalOptics Express
Volume16
Issue number26
DOIs
StatePublished - Dec 22 2008

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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