Bienfait, A;
Campagne-Ibarcq, P;
Kiilerich, AH;
Zhou, X;
Probst, S;
Pla, JJ;
Schenkel, T;
... Bertet, P; + view all
(2017)
Magnetic Resonance with Squeezed Microwaves.
Physical Review X
, 7
(4)
, Article 041011. 10.1103/PhysRevX.7.041011.
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Abstract
Vacuum fluctuations of the electromagnetic field set a fundamental limit to the sensitivity of a variety of measurements, including magnetic resonance spectroscopy. We report the use of squeezed microwave fields, which are engineered quantum states of light for which fluctuations in one field quadrature are reduced below the vacuum level, to enhance the detection sensitivity of an ensemble of electronic spins at millikelvin temperatures. By shining a squeezed vacuum state on the input port of a microwave resonator containing the spins, we obtain a 1.2-dB noise reduction at the spectrometer output compared to the case of a vacuum input. This result constitutes a proof of principle of the application of quantum metrology to magnetic resonance spectroscopy.
| Type: | Article |
|---|---|
| Title: | Magnetic Resonance with Squeezed Microwaves |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevX.7.041011 |
| Publisher version: | http://doi.org/10.1103/PhysRevX.7.041011 |
| Language: | English |
| Additional information: | Copyright © Authors 2017. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. |
| Keywords: | Magnetism, Quantum Physics,Quantum Information |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10033899 |
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