Versatile element for free-space dividing and redirecting neutral atom clouds
نویسندگان
چکیده
We introduce a tunnel lock that can be exploited to divide, delay and alter the direction of traveling clouds of cold atoms. This versatile free-space element is implemented by crossing two atom tunnels formed by low intensity, blue-detuned dark-hollow (Bessel mode) laser beams. We show that clouds of cold Rb atoms initially moving within one tunnel can be transferred to the other by gating the intensities of the two tunnels – a tunnel lock – with an efficiency limited by the overlap volume. The element also can be used to divide a single cloud into smaller clouds each having a distinct momentum.
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