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Abstract:
By modulating the emission characteristics of a twin-correlated bright beam in a parametric amplification of the four-wave mixing process, a nondestructive and lensless imaging scheme to image ultra-cold atoms or molecules is proposed. The optical lattice state, which is induced via the coupling between ultra-cold atoms and a standing wave, is used to effectively modulate the dressing-suppressed/enhanced nonlinear susceptibility, and an emission-intensity-modulated grating of a correlated bright beam is formed. The intensity fluctuations of the correlated bright beam are taken as the imaging light to implement second-order coincidence measurement. As an important complementary scheme to a previous self-imaging scheme with spontaneous parametric down-conversion, our scheme has the characteristic of an efficient generation and detection rate. In addition, the visibility of the imaging can be significantly improved by enhanced nonlinear susceptibility. Our work may offer a nondestructive and lensless way to image ultra-cold atoms or molecules.
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Source :
LASER PHYSICS LETTERS
ISSN: 1612-2011
Year: 2016
Issue: 7
Volume: 13
2 . 5 3 7
JCR@2016
2 . 0 1 6
JCR@2020
ESI Discipline: PHYSICS;
ESI HC Threshold:140
JCR Journal Grade:2
CAS Journal Grade:3
Cited Count:
WoS CC Cited Count: 6
SCOPUS Cited Count: 6
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 2
Affiliated Colleges:
电子与信息工程学部(原电子与信息工程学院) 电子物理与器件教育部重点实验室
电子与信息工程学部(原电子与信息工程学院) 电子科学与工程学院(原电子科学与技术系)