Super-resolution microscopy via fluctuation-enhanced spatial mode demultiplexing

Abstract:We introduce a superresolution technique that combines spatial mode demultiplexing (SPADE) with emitter blinking. We show that temporal fluctuations not only enhance the precision of SPADE imaging, but also drastically simplify the measurement required to recover full object information---in the presence of fluctuations, SPADE can be replaced by the much simpler image inversion interferometry. Both gains are enabled by exploiting temporal cumulants of the detected signal. We further show that the proposed fluctuation-enhanced techniques are significantly more robust to dark-count noise than conventional SPADE.

Revised version contains dark-count noise analysis (section IV.A), and additional theoretical considerations (appendix E)

Optics (physics.optics); Quantum Physics (quant-ph)

arXiv:2511.20790 [physics.optics]

(or arXiv:2511.20790v2 [physics.optics] for this version)

https://doi.org/10.48550/arXiv.2511.20790 Focus to learn more arXiv-issued DOI via DataCite

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