Distributed multi-parameter quantum metrology with a superconducting quantum network [PDF]
Nature CommunicationsQuantum metrology has emerged as a powerful tool for timekeeping, field sensing, and precision measurements in fundamental physics. With the advent of distributed quantum metrology, its capabilities have extended to probing spatially distributed ...
Jiajian Zhang +21 more
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Quantum metrology with quantum-chaotic sensors [PDF]
Nature Communications, 2018 Enhanced sensing using quantum systems generally relies on preparation of highly non-classical states, such as entangled or squeezed states. Here the authors propose a different approach, based on hypersensitivity of quantum-chaotic dynamics with respect
Lukas J. Fiderer, Daniel Braun
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Magnon squeezing in the quantum regime [PDF]
Nature CommunicationsSqueezed states, crucial for quantum metrology and emerging quantum technologies, have been demonstrated in various platforms, but quantum squeezing of magnons in macroscopic spin systems remains elusive.
Yuan-Chao Weng +10 more
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Adiabatic critical quantum metrology cannot reach the Heisenberg limit even when shortcuts to adiabaticity are applied [PDF]
Quantum, 2021 We show that the quantum Fisher information attained in an adiabatic approach to critical quantum metrology cannot lead to the Heisenberg limit of precision and therefore $regular$ quantum metrology under optimal settings is always superior. Furthermore,
Karol Gietka +3 more
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Optimal adaptive control for quantum metrology with time-dependent Hamiltonians [PDF]
Nature Communications, 2017 Shengshi Pang +2 more
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Understanding and Improving Critical Metrology. Quenching Superradiant Light-Matter Systems Beyond the Critical Point [PDF]
Quantum, 2022 We carefully examine critical metrology and present an improved critical quantum metrology protocol which relies on quenching a system exhibiting a superradiant quantum phase transition beyond its critical point. We show that this approach can lead to an
Karol Gietka, Lewis Ruks, Thomas Busch
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Quantum enhanced non-interferometric quantitative phase imaging
Light: Science & Applications, 2023 Quantum entanglement and squeezing have significantly improved phase estimation and imaging in interferometric settings beyond the classical limits.
Giuseppe Ortolano +7 more
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Experimental critical quantum metrology with the Heisenberg scaling
npj Quantum Information, 2021 Critical quantum metrology, which exploits quantum critical systems as probes to estimate a physical parameter, has gained increasing attention recently.
Ran Liu +8 more
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Steering-enhanced quantum metrology using superpositions of noisy phase shifts
Physical Review Research, 2023 Quantum steering is an important correlation in quantum information theory. A recent work [Nat. Commun. 12, 2410 (2021)NCAOBW2041-172310.1038/s41467-021-22353-3] showed that quantum steering is also useful for quantum metrology.
Kuan-Yi Lee +5 more
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EURAMET EMN-Q: The European metrology network for quantum technologies
Measurement: Sensors, 2021 The second quantum revolution is underway and the deployment of Quantum Technologies (QT) keeps pace with it. This technological paradigm-switch creates opportunities and challenges for industry, innovation and society.
Ivo Pietro Degiovanni +4 more
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