Two-Photon Gateway in One-Atom Cavity Quantum Electrodynamics

被引：115

作者：

Kubanek, A. ^{[1
]}

Ourjoumtsev, A. ^{[1
]}

Schuster, I. ^{[1
]}

Koch, M. ^{[1
]}

Pinkse, P. W. H. ^{[1
]}

Murr, K. ^{[1
]}

Rempe, G. ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.101.203602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Single atoms absorb and emit light from a resonant laser beam photon by photon. We show that a single atom strongly coupled to an optical cavity can absorb and emit resonant photons in pairs. The effect is observed in a photon correlation experiment on the light transmitted through the cavity. We find that the atom-cavity system transforms a random stream of input photons into a correlated stream of output photons, thereby acting as a two-photon gateway. The phenomenon has its origin in the quantum anharmonicity of the energy structure of the atom-cavity system. Future applications could include the controlled interaction of two photons by means of one atom.

引用

页数：4

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