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arXiv · 2602.16413

Measurement Induced Subradiance

Ipsita Bar·Aditi Thakar·B. Prasanna Venkatesh
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Abstract

Preparing subradiant steady states of collectively emitting quantum two-level emitters (TLEs) is hindered by their dark, weakly interacting nature. Existing approaches rely on patterned driving, local control, or structured environments. We propose a platform-independent protocol based on projective measurements on a single TLE. For permutation-symmetric ensembles, a single measurement yields appreciable occupation of single-excitation subradiant steady states. For generic arrays, repeated measurements on one emitter drive the unmeasured TLEs into a nearly pure state with large overlap with the subradiant Dicke subspace.

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Ipsita Bar, Aditi Thakar, B. Prasanna Venkatesh. 2026-02-18. Measurement Induced Subradiance. https://arxiv.org/abs/2602.16413

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