TY - JOUR
T1 - Harmonic spectral modulation of an optical frequency comb to control the ultracold molecules formation
AU - Malinovskaya, Svetlana A.
AU - Liu, Gengyuan
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2016/11/1
Y1 - 2016/11/1
N2 - A method for creation of ultracold molecules by stepwise adiabatic passage from the Feshbach state to the fundamentally ground state using an optical frequency comb is presented within a semiclassical multilevel model. The sine modulation of the spectral phase of the comb leads to the creation of a quasi-dark dressed state. An insignificant population of the excited state manifold in this dark state provides an efficient way of mitigating decoherence in the system. In contrast, the cosine modulation does not lead to the quasi-dark state formation. The results demonstrate the importance of the parity of the spectral chirp in quantum control.
AB - A method for creation of ultracold molecules by stepwise adiabatic passage from the Feshbach state to the fundamentally ground state using an optical frequency comb is presented within a semiclassical multilevel model. The sine modulation of the spectral phase of the comb leads to the creation of a quasi-dark dressed state. An insignificant population of the excited state manifold in this dark state provides an efficient way of mitigating decoherence in the system. In contrast, the cosine modulation does not lead to the quasi-dark state formation. The results demonstrate the importance of the parity of the spectral chirp in quantum control.
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U2 - 10.1016/j.cplett.2016.09.049
DO - 10.1016/j.cplett.2016.09.049
M3 - Article
AN - SCOPUS:84988530603
SN - 0009-2614
VL - 664
SP - 1
EP - 4
JO - Chemical Physics Letters
JF - Chemical Physics Letters
ER -