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Researcher Sisi Zhou at Perimeter Institute is advancing quantum metrology by leveraging error correction techniques to improve signal-to-noise ratios in fundamental physics instruments like atomic clocks and dark matter detectors. This work demonstrates that precise quantum measurements can enhance sensitivity across various physical systems without requiring full-scale quantum computers, directly addressing the challenge of extracting information from noisy environments.
Perimeter researcher studies quantum metrology & signal-to-noise

Perimeter’s Sisi Zhou advances quantum metrology, using ultraprecise measurements to enhance signal detection in systems like atomic clocks.
Sisi Zhou of Perimeter Institute investigates how ultraprecise quantum measurements can push the boundaries of accuracy in devices ranging from atomic clocks to dark matter detectors. Zhou, who earned her PhD from Yale in 2021 and joined Perimeter after a postdoctoral fellowship at Caltech, focuses on quantum metrology, extracting information from quantum systems, and uses quantum error correction to combat inherent noise. Zhou explains, clarifying that a photon or electron can qualify “as long as quantum physics determines how the system evolves.” This work aims to enhance signal-to-noise ratios, improving the sensitivity of instruments used to explore…
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