Rectified momentum transport for a kicked Bose-Einstein Condensate
Mark Sadgrove, Munekazu Horikoshi, Tetsuo Sekimura, Ken'ichi Nakagawa
TL;DR
This paper experimentally demonstrates a quantum phenomenon where a Bose-Einstein Condensate exhibits directed momentum transport when kicked at quantum resonance, using matter wave interference to control the direction of the current.
Contribution
It presents the first experimental observation of rectified momentum transport in a BEC at quantum resonance, highlighting a quantum interference mechanism for controlling atomic motion.
Findings
Observation of directed momentum current in BEC at Talbot time
Control of current direction via phase manipulation
Quantum interference as the underlying mechanism
Abstract
We report the experimental observation of rectified momentum transport for a Bose-Einstein Condensate kicked at the Talbot time (quantum resonance) by an optical standing wave. Atoms are initially prepared in a superposition of the 0 and -2*hbar*kl momentum states using an optical pi/2 pulse. By changing the relative phase of the superposed states, a momentum current in either direction along the standing wave may be produced. We offer an interpretation based on matter wave interference, showing that the observed effect is uniquely quantum.
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