Enhancement of ultracold molecule formation by local control in the nanosecond regime

Carini, J. L.; Kallush, S.; Kosloff, R.; Gould, P. L.

doi:10.1088/1367-2630/17/2/025008

Title: Enhancement of ultracold molecule formation by local control in the nanosecond regime

Journal Article · Sun Feb 01 00:00:00 EST 2015 · New Journal of Physics

DOI:https://doi.org/10.1088/1367-2630/17/2/025008· OSTI ID:1341483

Carini, J. L.; Kallush, S.; Kosloff, R.; Gould, P. L.

We describe quantum simulations of ultracold ⁸⁷Rb₂ molecule formation using photoassociation (PA) with nanosecond-time-scale pulses of frequency chirped light. In particular, we compare the case of a linear chirp to one where the frequency evolution is optimized by local control (LC) of the phase, and find that LC can provide a significant enhancement. The resulting optimal frequency evolution corresponds to a rapid jump from the PA absorption resonance to a downward transition to a bound level of the lowest triplet state. We also consider the case of two frequencies and investigate interference effects. The assumed chirp parameters should be achievable with nanosecond pulse shaping techniques and are predicted to provide a significant enhancement over recent experiments with linear chirps.

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Research Organization:: Univ. of Connecticut, Storrs, CT (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: FG02-92ER14263

OSTI ID:: 1341483

Alternate ID(s):: OSTI ID: 1203606

Journal Information:: New Journal of Physics, Journal Name: New Journal of Physics Vol. 17 Journal Issue: 2; ISSN 1367-2630

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United Kingdom

Language:: English

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Cited by: 5 works

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