A superconducting nanowire single photon detector on lithium niobate

被引：47

作者：

Tanner, M. G. ^{[1
,2
]}

Alvarez, L. San Emeterio ^{[3
]}

Jiang, W. ^{[3
,4
]}

Warburton, R. J. ^{[5
]}

Barber, Z. H. ^{[3
]}

Hadfield, R. H. ^{[1
,2
]}

机构：

[1] Heriot Watt Univ, Scottish Univ Phys Alliance, Edinburgh EH14 4AS, Midlothian, Scotland

[2] Heriot Watt Univ, Sch Engn & Phys Sci, Edinburgh EH14 4AS, Midlothian, Scotland

[3] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England

[4] Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China

[5] Univ Basel, Dept Phys, CH-4056 Basel, Switzerland

来源：

NANOTECHNOLOGY | 2012年 / 23卷 / 50期

基金：

英国工程与自然科学研究理事会;

关键词：

Photons - Optical waveguides - Niobium compounds - Avalanche photodiodes - Efficiency - Lithium - Nanowires - Particle beams;

D O I：

10.1088/0957-4484/23/50/505201

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Superconducting nanowire single photon detectors (SNSPDs) are a key enabling technology for optical quantum information science. In this paper we demonstrate a SNSPD fabricated on lithium niobate, an important material for high speed integrated photonic circuits. We report a system detection efficiency of 0.15% at a 1 kHz dark count rate with a maximum of similar to 1% close to the critical current at 1550 nm wavelength for a parallel wire SNSPD with front side illumination. There is clear scope for improving on this performance with further materials optimization. Detector integration with a lithium niobate optical waveguide is simulated, demonstrating the potential for high single photon detection efficiency in an integrated quantum optic circuit.

引用

页数：6

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