Proposal for detecting a single electron spin in a microwave resonator

被引：48

作者：

Haikka, P. ^{[1
]}

Kubo, Y. ^{[2
,3
]}

Bienfait, A. ^{[2
]}

Bertet, P. ^{[2
]}

Molmer, K. ^{[1
]}

机构：

[1] Aarhus Univ, Dept Phys & Astron, Ny Munkegade 120, DK-8000 Aarhus C, Denmark

[2] CEA Saclay, Univ Paris Saclay, CNRS, CEA,SPEC,Quantron Grp, F-91191 Gif Sur Yvette, France

[3] Grad Univ, Okinawa Inst Sci & Technol, Okinawa 9040495, Japan

来源：

PHYSICAL REVIEW A | 2017年 / 95卷 / 02期

基金：

欧洲研究理事会;

关键词：

QUANTUM INFORMATION; MAGNETIC-RESONANCE; COHERENCE TIME; READ-OUT; SILICON; RELAXATION; STORAGE; DONORS; LIMIT;

D O I：

10.1103/PhysRevA.95.022306

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a method for detecting the presence of a single spin in a crystal by coupling it to a high-quality factor superconducting planar resonator. By confining the microwave field in the vicinity of a constriction of nanometric dimensions, the coupling constant can be as high as 5-10 kHz. This coupling affects the amplitude of the field reflected by the resonator and the integrated homodyne signal allows detection of a single spin with unit signal-tonoise ratio within few milliseconds. We further show that a stochastic master equation approach and a Bayesian analysis of the full time-dependent homodyne signal improves this figure by similar to 30% for typical parameters.

引用

页数：10

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