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Title: Magnetic Resonance with Squeezed Microwaves

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.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [2] ;  [5] ;  [6] ;  [2] ;  [2] ;  [7] ;  [3] ;  [2]
  1. Univ. Paris-Saclay, Gif-sur-Yvette Cedex (France); Univ. of Chicago, Chicago, IL (United States)
  2. Univ. Paris-Saclay, Gif-sur-Yvette Cedex (France)
  3. Aarhus Univ., Aarhus (Denmark)
  4. Univ. Paris-Saclay, Gif-sur-Yvette Cedex (France); Institute of Electronics Microelectronics and Nanotechnology, Villeneuve d'Ascq Cedex (France)
  5. Univ. of New South Wales, Sydney, NSW (Australia)
  6. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  7. Univ. College London, London (United Kingdom)
Publication Date:
Grant/Contract Number:
AC02-05CH11231
Type:
Published Article
Journal Name:
Physical Review. X
Additional Journal Information:
Journal Volume: 7; Journal Issue: 4; Journal ID: ISSN 2160-3308
Publisher:
American Physical Society
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
OSTI Identifier:
1399805
Alternate Identifier(s):
OSTI ID: 1421828

Bienfait, A., Campagne-Ibarcq, P., Kiilerich, A. H., Zhou, X., Probst, S., Pla, J. J., Schenkel, T., Vion, D., Esteve, D., Morton, J. J. L., Moelmer, K., and Bertet, P.. Magnetic Resonance with Squeezed Microwaves. United States: N. p., Web. doi:10.1103/PhysRevX.7.041011.
Bienfait, A., Campagne-Ibarcq, P., Kiilerich, A. H., Zhou, X., Probst, S., Pla, J. J., Schenkel, T., Vion, D., Esteve, D., Morton, J. J. L., Moelmer, K., & Bertet, P.. Magnetic Resonance with Squeezed Microwaves. United States. doi:10.1103/PhysRevX.7.041011.
Bienfait, A., Campagne-Ibarcq, P., Kiilerich, A. H., Zhou, X., Probst, S., Pla, J. J., Schenkel, T., Vion, D., Esteve, D., Morton, J. J. L., Moelmer, K., and Bertet, P.. 2017. "Magnetic Resonance with Squeezed Microwaves". United States. doi:10.1103/PhysRevX.7.041011.
@article{osti_1399805,
title = {Magnetic Resonance with Squeezed Microwaves},
author = {Bienfait, A. and Campagne-Ibarcq, P. and Kiilerich, A. H. and Zhou, X. and Probst, S. and Pla, J. J. and Schenkel, T. and Vion, D. and Esteve, D. and Morton, J. J. L. and Moelmer, K. and Bertet, P.},
abstractNote = {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.},
doi = {10.1103/PhysRevX.7.041011},
journal = {Physical Review. X},
number = 4,
volume = 7,
place = {United States},
year = {2017},
month = {10}
}