A versatile source of single photons for quantum information processing

被引：194

作者：

Foertsch, Michael ^{[1
,2
,3
]}

Fuerst, Josef U. ^{[1
,2
]}

Wittmann, Christoffer ^{[1
,2
]}

Strekalov, Dmitry ^{[1
]}

Aiello, Andrea ^{[1
,2
]}

Chekhova, Maria V. ^{[1
]}

Silberhorn, Christine ^{[4
]}

Leuchs, Gerd ^{[1
,2
]}

Marquardt, Christoph ^{[1
,2
]}

机构：

[1] Max Planck Inst Sci Light, D-91058 Erlangen, Germany

[2] Univ Erlangen Nurnberg, Inst Opt Informat & Photon, D-91058 Erlangen, Germany

[3] SAOT, D-91052 Erlangen, Germany

[4] Univ Paderborn, D-33098 Paderborn, Germany

来源：

NATURE COMMUNICATIONS | 2013年 / 4卷

关键词：

PARAMETRIC OSCILLATION; LINEAR OPTICS; STATE; PAIRS;

D O I：

10.1038/ncomms2838

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The generation of high-quality single-photon states with controllable narrow spectral bandwidths and central frequencies is key to facilitate efficient coupling of any atomic system to non-classical light fields. Such an interaction is essential in numerous experiments for fundamental science and applications in quantum communication and information processing, as well as in quantum metrology. Here we implement a fully tunable, narrow-band and efficient single-photon source based on a whispering gallery mode resonator. Our disk-shaped, monolithic and intrinsically stable resonator is made of lithium niobate and supports a cavity-assisted spontaneous parametric down-conversion process. The generated photon pairs are emitted into two highly tunable resonator modes. We verify wavelength tuning over 100 nm of both modes with controllable bandwidth between 7.2 and 13 MHz. Heralding of single photons yields anti-bunching with g((2))(0) < 0.2.

引用

页数：5

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