A high-efficiency quantum non-demolition single photon number resolving detector

Munro, W. J. ; Nemoto, Kae ; Beausoleil, R. G. ; Spiller, T. P.

HP Development Company

关键词: quantum information;    quantum optics;    quantum non- demolition;    photon detector;   

RP-ID  :  HPL-2003-213

学科分类：计算机科学（综合）

美国|英语

来源: HP Labs

【 摘 要 】

We discuss a new and novel approach to the problem of creating a photon number resolving detector using the giant Kerr nonlinearities available in electromagnetically induced transparency. Our scheme can implement a photon number quantum non-demolition measurement with high efficiency (>99%) using only a few hundred atoms, and can distinguish 0, 1 and 2 photons. Notes: Kae Nemoto, National Institute of Informatics, 2-1-2 Hitotsubashi, Chiyoda-ku, Tokyo 101-8430, Japan R. G. Beausoleil, HP Laboratories, 13837 175th Pl., NE, Redmond, WA 98052-2180, USA 5 Pages