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arXiv · 1604.05087

Preparation of ultracold atom clouds at the shot noise level

Miroslav Gajdacz·Andrew J. Hilliard·Mick A. Kristensen·Poul L. Pedersen·Carsten Klempt·Jan J. Arlt·Jacob F. Sherson
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Abstract

We prepare number stabilized ultracold clouds through the real-time analysis of non-destructive images and the application of feedback. In our experiments, the atom number ${N\sim10^6}$ is determined by high precision Faraday imaging with uncertainty $Δ_N$ below the shot noise level, i.e., $Δ_N <\sqrt{N}$. Based on this measurement, feedback is applied to reduce the atom number to a user-defined target, whereupon a second imaging series probes the number stabilized cloud. By this method, we show that the atom number in ultracold clouds can be prepared below the shot noise level.

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Miroslav Gajdacz, Andrew J. Hilliard, Mick A. Kristensen, Poul L. Pedersen, Carsten Klempt, Jan J. Arlt, Jacob F. Sherson. 2016-08-01. Preparation of ultracold atom clouds at the shot noise level. https://doi.org/10.1103/physrevlett.117.073604

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