Published 2007
| public
Book Section - Chapter
Real-time quantum feedback control with cold alkali atoms
- Creators
- Geremia, J. M.
- Others:
- Cerf, N. J.
- Leuchs, Gerd
- Polzik, E. S.
Abstract
This chapter describes recent experiments involving continuous measurement and quantum feedback control of collective spin in a cloud of cold alkali atoms. While measurement by itself can generate entanglement between different atoms in the sample by virtue of conditional spin-squeezing, the squeezed state produced in any individual instance of the measurement is randomly distributed. Incorporating real-time feedback control into the observation process suppresses the statistical dispersion of the measurement outcome so that the same a posteriori state is achieved in every instance of the feedback-stabilized measurement.
Additional Information
© 2007 Imperial College Press. The experiment described here involves work by JMG, John K. Stockton and Hideo Mabuchi. Ramon van Handel has played an instrumental role in the theoretical analysis of the results, and we thank Howard Wiseman, Andrew Doherty, Poul Jessen, Ivan Deutsch and Andrew Silberfarb for many indispensable discussions over the past several years.Additional details
- Eprint ID
- 19993
- Resolver ID
- CaltechAUTHORS:20100916-153749163
- Created
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2010-09-16Created from EPrint's datestamp field
- Updated
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2019-10-03Created from EPrint's last_modified field