期刊
PHYSICAL REVIEW A
卷 95, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.95.022306
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资金
- Villum Foundation
- European Research Council [615767]
- Villum Fonden [00007335] Funding Source: researchfish
- European Research Council (ERC) [615767] Funding Source: European Research Council (ERC)
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.
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