Single-Photon Switch Based on Rydberg Blockade

被引：237

作者：

Baur, Simon ^{[1
]}

Tiarks, Daniel ^{[1
]}

Rempe, Gerhard ^{[1
]}

Duerr, Stephan ^{[1
]}

机构：

[1] Max Planck Inst Quantum Opt, D-85748 Garching, Germany

来源：

PHYSICAL REVIEW LETTERS | 2014年 / 112卷 / 07期

关键词：

TRANSISTOR; OPTICS; ATOMS;

D O I：

10.1103/PhysRevLett.112.073901

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

All-optical switching is a technique in which a gate light pulse changes the transmission of a target light pulse without the detour via electronic signal processing. We take this to the quantum regime, where the incoming gate light pulse contains only one photon on average. The gate pulse is stored as a Rydberg excitation in an ultracold atomic gas using electromagnetically induced transparency. Rydberg blockade suppresses the transmission of the subsequent target pulse. Finally, the stored gate photon can be retrieved. A retrieved photon heralds successful storage. The corresponding postselected subensemble shows an extinction of 0.05. The single-photon switch offers many interesting perspectives ranging from quantum communication to quantum information processing.

引用

页数：5

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