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

YunFeng Xiao | Zendy; Şahin Kaya Özdemir | Zendy; Venkat Gaddam | Zendy; Chun-Hua Dong | Zendy; Nobuyuki Imoto | Zendy; Lan Yang | Zendy

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

Author(s) -

YunFeng Xiao,

Şahin Kaya Özdemir,

Venkat Gaddam,

Chun-Hua Dong,

Nobuyuki Imoto,

Lan Yang

Publication year - 2008

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.16.021462

Subject(s) - physics , photon , quantum optics , optics , kerr effect , quantum , cavity quantum electrodynamics , quantum sensor , quantum metrology , quantum mechanics , nonlinear system , quantum information , quantum network , open quantum system

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.

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