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Interferometric Unruh Detectors for Bose-Einstein Condensates

Cisco Gooding1, Steffen Biermann1, Sebastian Erne1,2,3, Jorma Louko1, William G. Unruh4,5, Jörg Schmiedmayer2, and Silke Weinfurtner1,6

  • 1School of Mathematical Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
  • 2Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien, Stadionallee 2, 1020 Vienna, Austria
  • 3Wolfgang Pauli Institut, c/o Fak. Mathematik, Universität Wien, Nordbergstrasse 15, 1090 Vienna, Austria
  • 4Department of Physics & Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
  • 5Hagler IAS, IQSE, Texas A&M, College Station, Texas 77843-4242, USA
  • 6Centre for the Mathematics and Theoretical Physics of Quantum Non-Equilibrium Systems, University of Nottingham, Nottingham NG7 2RD, United Kingdom

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Phys. Rev. Lett. 125, 213603 – Published 20 November, 2020

DOI: https://doi.org/10.1103/PhysRevLett.125.213603

Abstract

The Unruh effect predicts a thermal response for an accelerated detector moving through the vacuum. Here we propose an interferometric scheme to observe an analogue of the circular Unruh effect using a localized laser coupled to a Bose-Einstein condensate (BEC). Quantum fluctuations in the condensate are governed by an effective relativistic field theory, and as demonstrated, the coupled laser field acts as an effective Unruh-DeWitt detector thereof. The effective speed of light is lowered by 12 orders of magnitude to the sound velocity in the BEC. For detectors traveling close to the sound speed, observation of the Unruh effect in the analogue system becomes experimentally feasible.

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Physics Subject Headings (PhySH)

Corrections

21 December, 2020

Correction: A discrepancy in the sixth author’s name has been rectified.

See Also

Unruh and analogue Unruh temperatures for circular motion in 3+1 and 2+1 dimensions

Steffen Biermann, Sebastian Erne, Cisco Gooding, Jorma Louko, Jörg Schmiedmayer, William G. Unruh, and Silke Weinfurtner
Phys. Rev. D 102, 085006 (2020)

Article Text

Supplemental Material

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Outline

Information

Phys. Rev. Lett. 125, 213603– Published 20 November, 2020
  • Received 24 July 2020
  • Accepted 7 October 2020
  • Corrected 21 December 2020
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