Sub-Hertz Resonance by Weak Measurement

Jianming Wen; Weizhi Qu; Jian Sun; Shenchao Jin; Yanhua Zhai; Yanhong Xiao; Liang Jiang

doi:10.1364/NLO.2019.NTh2A.1

Nonlinear Optics (NLO)
OSA Technical Digest (Optica Publishing Group, 2019),
paper NTh2A.1
•https://doi.org/10.1364/NLO.2019.NTh2A.1

Sub-Hertz Resonance by Weak Measurement

Jianming Wen, Weizhi Qu, Jian Sun, Shenchao Jin, Yanhua Zhai, Yanhong Xiao, and Liang Jiang

Nonlinear Optics 2019

Waikoloa Beach, Hawaii United States
15–19 July 2019
ISBN: 978-1-943580-62-0

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J. Wen, W. Qu, J. Sun, S. Jin, Y. Zhai, Y. Xiao, and L. Jiang, "Sub-Hertz Resonance by Weak Measurement," in Nonlinear Optics (NLO), OSA Technical Digest (Optica Publishing Group, 2019), paper NTh2A.1.

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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/Hz^1/2 near DC in a room-temperature atomic-vapor cell, by designing a non-Hermitian Hamiltonian.

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