Preprint
Jul 2026
Non-Hermitian-enhanced quantum sensing in an optical interferometer
The precision of quantum parameter estimation is traditionally constrained by the quantum Cram\'{e}r-Rao bound, which is based on the Hermitian measurement framework. Recent studies of non-Hermitian systems have suggested new possibilities for enhancing parameter-estimation sensitivity. Here, we experimentally realize...
Xiaojia Huang, Lei Xiao, Bingzi Huo et al.
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