A photon turnstile dynamically regulated by one atom

被引：556

作者：

Dayan, Barak ^{[1
]}

Parkins, A. S. ^{[1
]}

Aoki, Takao ^{[1
,2
]}

Ostby, E. P. ^{[2
]}

Vahala, K. J. ^{[2
]}

Kimble, H. J. ^{[1
]}

机构：

[1] CALTECH, Norman Bridge Lab Phys 12 33, Pasadena, CA 91125 USA

[2] CALTECH, Thomas J Watson Lab Appl Phys, Pasadena, CA 91125 USA

来源：

SCIENCE | 2008年 / 319卷 / 5866期

关键词：

D O I：

10.1126/science.1152261

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：

Beyond traditional nonlinear optics with large numbers of atoms and photons, qualitatively new phenomena arise in a quantum regime of strong interactions between single atoms and photons. By using a microscopic optical resonator, we achieved such interactions and demonstrated a robust, efficient mechanism for the regulated transport of photons one by one. With critical coupling of the input light, a single atom within the resonator dynamically controls the cavity output conditioned on the photon number at the input, thereby functioning as a photon turnstile. We verified the transformation from a Poissonian to a sub- Poissonian photon stream by photon counting measurements of the input and output fields. The results have applications in quantum information science, including for controlled interactions of single light quanta and for scalable quantum processing on atom chips.

引用

页码：1062 / 1065

页数：4

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