Optical Synthesis of Large-Amplitude Squeezed Coherent-State Superpositions with Minimal Resources

被引：101

作者：

Huang, K. ^{[1
,2
]}

Le Jeannic, H. ^{[1
]}

Ruaudel, J. ^{[1
]}

Verma, V. B. ^{[3
]}

Shaw, M. D. ^{[4
]}

Marsili, F. ^{[4
]}

Nam, S. W. ^{[3
]}

Wu, E. ^{[2
]}

Zeng, H. ^{[2
]}

Jeong, Y. -C. ^{[1
]}

Filip, R. ^{[5
]}

Morin, O. ^{[1
]}

Laurat, J. ^{[1
]}

机构：

[1] UPMC, Univ Paris 04, ENS PSL Res Univ, Coll France,CNRS,Lab Kastler Brossel, F-75005 Paris, France

[2] E China Normal Univ, State Key Lab Precis Spect, Shanghai 200062, Peoples R China

[3] NIST, Boulder, CO 80305 USA

[4] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[5] Palacky Univ, Dept Opt, Olomouc 77146, Czech Republic

来源：

PHYSICAL REVIEW LETTERS | 2015年 / 115卷 / 02期

基金：

欧洲研究理事会;

关键词：

HYBRID ENTANGLEMENT; QUANTUM; GENERATION; PHOTONS;

D O I：

10.1103/PhysRevLett.115.023602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose and experimentally realize a novel versatile protocol that allows the quantum state engineering of heralded optical coherent-state superpositions. This scheme relies on a two-mode squeezed state, linear mixing, and a n-photon detection. It is optimally using expensive non-Gaussian resources to build up only the key non-Gaussian part of the targeted state. In the experimental case of a two-photon detection based on high-efficiency superconducting nanowire single-photon detectors, the freely propagating state exhibits a 67% fidelity with a squeezed even coherent-state superposition with a size vertical bar alpha vertical bar(2) = 3. The demonstrated procedure and the achieved rate will facilitate the use of such superpositions in subsequent protocols, including fundamental tests and optical hybrid quantum information implementations.

引用

页数：6

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