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QND measurements and state preparation in quantum gases by light
detection
release_gsaqqw7lnvcljk2drm3vey4blm
by
Igor B. Mekhov, Helmut Ritsch
Released
as a article
.
2008
Abstract
We consider light scattering from ultracold atoms trapped in an optical
lattice into a cavity. The measurement of photons leaking out the cavity
provides a quantum nondemolition (QND) access to various atomic variables.
Depending on the chosen geometry the time resolved light detection projects the
atomic quantum state to various atom-number squeezed and Schroedinger cat
states. Modifications of the atomic and light properties at a single quantum
trajectory are demonstrated. The quantum structure of final states can be
revealed by further observations of the same sample.
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0805.1402v1
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