Single microwave-photon detector using an artificial Λ-type three-level system

被引：166

作者：

Inomata, Kunihiro ^{[1
]}

Lin, Zhirong ^{[1
]}

Koshino, Kazuki ^{[2
]}

Oliver, William D. ^{[3
,4
]}

Tsai, Jaw-Shen ^{[1
,5
]}

Yamamoto, Tsuyoshi ^{[6
]}

Nakamura, Yasunobu ^{[1
,7
]}

机构：

[1] RIKEN, CEMS, Wako, Saitama 3510198, Japan

[2] Tokyo Med & Dent Univ, Coll Liberal Arts & Sci, Ichikawa, Chiba 2720827, Japan

[3] MIT, Lincoln Lab, Lexington, MA 02420 USA

[4] MIT, Dept Phys, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[5] Tokyo Univ Sci, Dept Phys, Shinjuku Ku, Tokyo 1628601, Japan

[6] NEC IoT Device Res Labs, Tsukuba, Ibaraki 3058501, Japan

[7] Univ Tokyo, RCAST, Meguro Ku, Tokyo 1538904, Japan

来源：

NATURE COMMUNICATIONS | 2016年 / 7卷

关键词：

QUANTUM COMPUTATION; OSCILLATOR; ATOM;

D O I：

10.1038/ncomms12303

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：

Single-photon detection is a requisite technique in quantum-optics experiments in both the optical and the microwave domains. However, the energy of microwave quanta are four to five orders of magnitude less than their optical counterpart, making the efficient detection of single microwave photons extremely challenging. Here we demonstrate the detection of a single microwave photon propagating through a waveguide. The detector is implemented with an impedance-matched artificial Lambda system comprising the dressed states of a driven superconducting qubit coupled to a microwave resonator. Each signal photon deterministically induces a Raman transition in the Lambda system and excites the qubit. The subsequent dispersive readout of the qubit produces a discrete 'click'. We attain a high single-photon-detection efficiency of 0.66 +/- 0.06 with a low dark-count probability of 0.014 +/- 0.001 and a reset time of similar to 400 ns. This detector can be exploited for various applications in quantum sensing, quantum communication and quantum information processing.

引用

页数：7

共 33 条

[1] A linear-optical proof that the permanent is #P-hard [J].