Paper Publications

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Journal:Optics Letters

Abstract:Single-site-resolved addressing offers an unprecedentedcapability of manipulating atoms in optical lattices. Wedemonstrate a robust site-resolved addressing by locking theposition of the addressing beam to the optical lattice phase.The addressing beam is modulated by a digital micromirrordevice (DMD) integrated into a quantum gas microscope(QGM). A typical experiment with ultracold atoms takesseveral hours to collect hundreds of samples by repeatingthe sequence of programmed operations, whose durationis 40 seconds. During the collection, the phase of opticallattices can drift over a few lattice sites. According to thephases of the lattice obtained from the current experimen-tal realizations, we correct the addressing beam positionfor the subsequent realization by shifting the pattern of theactivated micromirrors on the DMD. This feedback loopis compiled to an application with a graphical user inter-face (GUI) for relevant devices, which is synchronized tothe experimental sequence. The long-term (5 hours) posi-tion deviation between the pointing of the addressing beamand the lattice phase is suppressed to a 0.02(2)/0.02(2) latticespacing in the X/Ydirection, verifying a 10-fold reductionin comparison to that without feedback. With the help ofphase-locking, the success rate of site-resolved addressingis improved substantially from 60(7)% to 95(2)%.

Co-author:Yong-Guang Zheng et al.

Indexed by:Journal paper

Discipline:Natural Science

Document Type:J

Volume:47

Issue:16

Page Number:4239–4242

Translation or Not:no

Date of Publication:2022-12-18

Included Journals:SCI

Links to published journals:https://opg.optica.org/ol/fulltext.cfm?uri=ol-47-16-4239&id=491991