Quantum Up-Conversion of Squeezed Vacuum States from 1550 to 532 nm

被引：62
作者：
Vollmer, Christina E. [1 ,2 ]
Baune, Christoph [1 ,2 ]
Samblowski, Aiko [1 ,2 ]
Eberle, Tobias [1 ,2 ]
Haendchen, Vitus [1 ,2 ]
Fiurasek, Jaromir [3 ]
Schnabel, Roman [1 ,2 ]
机构：
[1] Leibniz Univ Hannover, Albert Einstein Inst, Max Planck Inst Gravitat Phys, D-30167 Hannover, Germany
[2] Leibniz Univ Hannover, Inst Gravitat Phys, D-30167 Hannover, Germany
[3] Palacky Univ, Dept Opt, Olomouc 77146, Czech Republic
来源：
PHYSICAL REVIEW LETTERS | 2014年 / 112卷 / 07期
关键词：
FREQUENCY-CONVERSION; LIGHT; NOISE; METROLOGY;
D O I：
10.1103/PhysRevLett.112.073602
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Squeezed vacuum states constitute a particularly useful resource in quantum information as well as in quantum metrology. The frequency conversion of these states is important to provide the bridge between different wavelengths within a sequence of downstream applications and also to provide a way for squeezed-state generation at so-far inaccessible wavelengths. Here we demonstrate the external quantum up-conversion of carrier-light-free squeezed vacuum states for the first time. Our result proves that nondegenerate sum-frequency generation preserves the coherences that are present between photon pairs and higher-order photon pairs of the squeezed input state.
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页数：5
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