Entanglement-enhanced dual-comb spectroscopy
- URL: http://arxiv.org/abs/2304.01516v3
- Date: Sun, 30 Jul 2023 03:55:30 GMT
- Title: Entanglement-enhanced dual-comb spectroscopy
- Authors: Haowei Shi, Zaijun Chen, Scott E. Fraser, Mengjie Yu, Zheshen Zhang
and Quntao Zhuang
- Abstract summary: Dual-comb interferometry harnesses the interference of two laser frequency combs to provide unprecedented capability in spectroscopy applications.
We propose an entanglement-enhanced dual-comb spectroscopy protocol that leverages quantum resources to significantly improve the signal-to-noise ratio performance.
Our results show significant quantum advantages in the uW to mW power range, making this technique particularly attractive for biological and chemical sensing applications.
- Score: 0.7340017786387767
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Dual-comb interferometry harnesses the interference of two laser frequency
combs to provide unprecedented capability in spectroscopy applications. In the
past decade, the state-of-the-art systems have reached a point where the
signal-to-noise ratio per unit acquisition time is fundamentally limited by
shot noise from vacuum fluctuations. To address the issue, we propose an
entanglement-enhanced dual-comb spectroscopy protocol that leverages quantum
resources to significantly improve the signal-to-noise ratio performance. To
analyze the performance of real systems, we develop a quantum model of
dual-comb spectroscopy that takes practical noises into consideration. Based on
this model, we propose quantum combs with side-band entanglement around each
comb lines to suppress the shot noise in heterodyne detection. Our results show
significant quantum advantages in the uW to mW power range, making this
technique particularly attractive for biological and chemical sensing
applications. Furthermore, the quantum comb can be engineered using nonlinear
optics and promises near-term experimentation.
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