Robust Interaction-Enhanced Sensing via Antisymmetric Rabi Spectroscopy
- URL: http://arxiv.org/abs/2208.03179v2
- Date: Fri, 28 Oct 2022 04:34:32 GMT
- Title: Robust Interaction-Enhanced Sensing via Antisymmetric Rabi Spectroscopy
- Authors: Jiahao Huang, Sijie Chen, Min Zhuang, Chaohong Lee
- Abstract summary: We propose an antisymmetric Rabi spectroscopy protocol without collision shift in the presence of atom-atom interactions.
With stronger atom-atom interaction and Rabi frequency, the spectrum resolution can be dramatically improved and the measurement precision may even beat the standard quantum limit.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Atomic spectroscopy, an essential tool for frequency estimation, is widely
used in quantum sensing. Atom-atom interaction can be used to generate
entanglement for achieving quantum enhanced sensing. However, atom-atom
interaction always induces collision shift, which brings systematic error in
determining the resonance frequency. Contradiction between utilizing atom-atom
interaction and suppressing collision shift generally exists in atomic
spectroscopy. Here, we propose an antisymmetric Rabi spectroscopy protocol
without collision shift in the presence of atom-atom interactions. We
analytically find that the antisymmetric point can be used for determining the
resonance frequency. For small Rabi frequency, our antisymmetric Rabi
spectroscopy with slight atom-atom interaction can provide better measurement
precision than the conventional Rabi spectroscopy. With stronger atom-atom
interaction and Rabi frequency, the spectrum resolution can be dramatically
improved and the measurement precision may even beat the standard quantum
limit. Moreover, unlike the quantum-enhanced Ramsey interferometry via spin
squeezing, our scheme is robust against detection noises. Our antisymmetric
Rabi spectroscopy protocol has promising applications in various practical
quantum sensors such as atomic clocks and atomic magnetometers.
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