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Detection of absolute rotation using superfluid ^4He

Schwab, K. and Bruckner, N. and Packard, R. (1998) Detection of absolute rotation using superfluid ^4He. Low Temperature Physics, 24 (2). pp. 102-104. ISSN 1063-777X.

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We have developed the superfluid analog of the superconducting rf SQUID. Such a device is a quantum mechanically based, absolute gyroscope and has been used to sense the rotation of the Earth. Our device is fabricated using silicon processing techniques and forms a planer sensing loop of superfluid helium which couples to the applied rotation. A much more sensitive superfluid gyroscope based on the principle’s demonstrated with this device, might ultimately be used to detect the precession of our local inertial frame with respect to the fixed stars by the gravitomagnetic field of the rotating Earth. We compare the superfluid gyroscope against two other experiments aimed at detecting this general relativistic effect.

Item Type:Article
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Additional Information:© 1998 American Institute of Physics. This work is supported by the Office of Naval Research and the National Science Foundation. This article was published in English in the original journal.
Funding AgencyGrant Number
Office of Naval ResearchUNSPECIFIED
Subject Keywords:superfluid helium-4, angular measurement, gyroscopes, general relativity
Classification Code:PACS: 07.10.-h; 06.30.Bp; 67.90.+z; 04.80.Cc
Record Number:CaltechAUTHORS:20111220-134626966
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:28542
Deposited By: Tony Diaz
Deposited On:20 Dec 2011 22:09
Last Modified:26 Dec 2012 14:38

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