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Seminars & Lectures

* TITLE

Bloch oscillations of cold atoms in cavities

* SPEAKERS

Name	Affiliation	E-mail
Prasanna Venkatesh BALASUBRAMANIAN	APCTP	balasubv(at)apctp.org

* HOST(Applicant)

Name	Affiliation	E-mail
Gentaro Watanabe	APCTP	gentaro_watanabe(at)apctp.org

* DATE / TIME

2013-06-20, 4PM

* PLACE

503 Conference Room, APCTP, Pohang

* ABSTRACT

Quantum particles in a periodic potential subject to an additional linear force undergo Bloch oscillation at a frequency that is directly proportional to the magnitude of the applied force. In this talk I will describe a novel in-situ, non-destructive method to measure the Bloch frequency for a cloud of cold atoms that are confined within the electromagnetic field of a high quality standing wave cavity. The idea is to use the classical back-action of the atoms on the intra-cavity light field that contains signatures of the atomic dynamics (the Bloch frequency) and measure the amplitude and/or phase of the transmitted light field. As with any cavity based continuous measurement scheme we also need to consider the effects of quantum measurement back-action on this proposal. We do this by considering the dynamics of quantised linearised fluctuations about the dynamical classical atomic and light fields.

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