Demonstration of Atomic Frequency Comb Memory for Light with Spin-Wave Storage

被引：207

作者：

Afzelius, Mikael ^{[1
]}

Usmani, Imam ^{[1
]}

Amari, Atia ^{[2
]}

Lauritzen, Bjoern ^{[1
]}

Walther, Andreas ^{[2
]}

Simon, Christoph ^{[1
]}

Sangouard, Nicolas ^{[1
]}

Minar, Jiri ^{[1
]}

de Riedmatten, Hugues ^{[1
]}

Gisin, Nicolas ^{[1
]}

Kroll, Stefan ^{[2
]}

机构：

[1] Univ Geneva, Appl Phys Grp, CH-1211 Geneva 4, Switzerland

[2] Lund Univ, Dept Phys, SE-22100 Lund, Sweden

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 04期

基金：

瑞典研究理事会;

关键词：

ELECTROMAGNETICALLY INDUCED TRANSPARENCY; QUANTUM COMMUNICATION;

D O I：

10.1103/PhysRevLett.104.040503

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a light-storage experiment in a praseodymium-doped crystal where the light is mapped onto an inhomogeneously broadened optical transition shaped into an atomic frequency comb. After absorption of the light, the optical excitation is converted into a spin-wave excitation by a control pulse. A second control pulse reads the memory (on-demand) by reconverting the spin-wave excitation to an optical one, where the comb structure causes a photon-echo-type rephasing of the dipole moments and directional retrieval of the light. This combination of photon-echo and spin-wave storage allows us to store submicrosecond (450 ns) pulses for up to 20 mu s. The scheme has a high potential for storing multiple temporal modes in the single-photon regime, which is an important resource for future long-distance quantum communication based on quantum repeaters.

引用

页数：4

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