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

[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

[发布机构] HP Development Company

[学科分类] 计算机科学（综合）

[关键词] quantum information;quantum optics;quantum non- demolition;photon detector