Quantum nondemolition measurements and state preparation in quantum gases by light detection

Igor B. Mekhov, Helmut Ritsch

Research output

56 Citations (Scopus)

Abstract

We consider light scattering from ultracold quantum gas in optical lattices into a cavity. The measurement of photons leaking out of the cavity enables a quantum nondemolition access to various atomic variables. The time resolved light detection projects the motional state to various atom-number squeezed and macroscopic superposition states that strongly depend on the geometry. 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.

Original languageEnglish
Article number020403
JournalPhysical Review Letters
Volume102
Issue number2
DOIs
Publication statusPublished - 12 Jan 2009

Scopus subject areas

  • Physics and Astronomy(all)

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