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Bulletin of the American Physical Society

Spin noise spectroscopy to probe quantum states of ultracold fermionic atom gases

Bogdan Mihaila, Scott A. Crooker, Krastan B. Blagoev, Dwight G. Rickel, P. B. Littlewood, Darryl Lyle Smith

Published Mar 14, 2006• 2 citations
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Abstract

Bogdan Mihaila, Scott A. Crooker, Krastan B. Blagoev, Dwight G. Rickel, Peter B. Littlewood, and Darryl L. Smith Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA National High Magnetic Field Laboratory, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, United Kingdom Received 2 March 2006; published 7 December 2006

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Bogdan Mihaila, Scott A. Crooker, Krastan B. Blagoev, Dwight G. Rickel, Peter B. Littlewood, and Darryl L. Smith Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA National High Magnetic Field Laboratory, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, United Kingdom Received 2 March 2006; published 7 December 2006
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Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545(Printed February 1, 2008)Localized spin states in conventional superconductors at low temperatures are expected to havelong decoherence time due to the strong suppression of spin relaxation channels. We propose ascanning tunneling microscopy (STM) experiment allowing the direct measurement of the decoher-ence time of a single spin in a conventional superconductor. The experimental setup can be readilyapplied to general-purpose spin-polarized STM and to local spin relaxation spectroscopy. A possibleextension of the setup to a quantum information processing scheme is discussed.