Quantum-enhanced distributed phase sensing with a truncated SU(1,1) interferometer
Journal Article
·
· Physical Review Research
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Yonsei Univ., Seoul (Korea, Republic of)
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Korea Institute of Science and Technology (KIST), Seoul (Korea, Republic of)
- Korea Institute of Science and Technology, Seoul (Korea)
In recent years, distributed quantum sensing has gained interest for a range of applications requiring networks of sensors, from global-scale clock synchronization to high energy physics. In particular, a network of entangled sensors can improve not only the sensitivity beyond the shot noise limit, but also enable a Heisenberg scaling with the number of sensors. Here, using bright entangled twin beams, we theoretically and experimentally demonstrate the detection of a linear combination of two distributed phases beyond the shot noise limit with a truncated SU(1,1) interferometer. Specifically, we show a quantum noise reduction of 1.7 ± 0.3 dB below what is possible with the corresponding classical configuration. Additionally, we theoretically extend the use of a truncated SU(1,1) interferometer to a multi-phase-distributed sensing scheme that leverages entanglement as a resource to achieve a quantum improvement in the scaling with the number of sensors in the network. Our results pave the way for developing quantum-enhanced sensor networks that can achieve an entanglement-enhanced sensitivity.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- Korea government (MSIT); National Research Foundation of Korea (NRF); USDOE Office of Science (SC), High Energy Physics (HEP)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 2573637
- Journal Information:
- Physical Review Research, Journal Name: Physical Review Research Journal Issue: 2 Vol. 7; ISSN 2643-1564
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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