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Sub-Hertz Resonance by Weak Measurement

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Abstract

Here we propose and demonstrate a novel weak-measurement-enhanced spectroscopy technique, which allows narrowing the resonance to 0.1 Hz and high sensitivity 7 fT/Hz1/2 near DC in a room-temperature atomic-vapor cell, by designing a non-Hermitian Hamiltonian.

© 2019 The Author(s)

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