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Quantum interferometric metrology with entangled photons
Frontiers in Physics, 2022 Quantum interferences of entangled photons have engendered tremendous intriguing phenomena that lack any counterpart in classical physics. Hitherto, owing to the salient properties of quantum optics, quantum interference has been widely studied and ...
Yuanyuan Chen, Ling Hong, Lixiang Chen
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Improving metrology with quantum scrambling
Science, 2023 Quantum scrambling describes the spreading of information into many degrees of freedom in quantum systems, such that the information is no longer accessible locally but becomes distributed throughout the system. This idea can explain how quantum systems become classical and acquire a finite temperature, or how in black holes the information about the ...
Zeyang Li +9 more
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Thermodynamic Principle for Quantum Metrology
Physical Review Letters, 2022 The heat dissipation in quantum metrology represents not only an unavoidable problem towards practical applications of quantum sensing devices but also a fundamental relationship between thermodynamics and quantum metrology. However, a general thermodynamic principle which governs the rule of energy consumption in quantum metrology, similar to Landauer'
Yaoming Chu, Jianming Cai
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Quantum Metrology Assisted by Abstention [PDF]
Physical Review Letters, 2013 Some typos ...
Gendra Casalí, Bernat +4 more
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npj Quantum Information, 2022 The quantum Cramér–Rao bound sets a fundamental limit on the accuracy of unbiased parameter estimation in quantum systems, relating the uncertainty in determining a parameter to the inverse of the quantum Fisher information. We experimentally demonstrate
Min Yu +10 more
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Super-Heisenberg scaling in Hamiltonian parameter estimation in the long-range Kitaev chain
Physical Review Research, 2022 In quantum metrology, nonlinear many-body interactions can enhance the precision of Hamiltonian parameter estimation to surpass the Heisenberg scaling.
Jing Yang +3 more
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‘Designer atoms’ for quantum metrology [PDF]
Nature, 2006 Entanglement is recognized as a key resource for quantum computation and quantum cryptography. For quantum metrology, the use of entangled states has been discussed and demonstrated as a means of improving the signal-to-noise ratio. In addition, entangled states have been used in experiments for efficient quantum state detection and for the measurement
Roos, C. F. +4 more
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Temporal analog of Fabry-Pérot resonator via coherent population trapping
npj Quantum Information, 2021 Ramsey spectroscopy via coherent population trapping (CPT) is essential in precision measurements. The conventional CPT-Ramsey fringes contain numbers of almost identical oscillations and so that it is difficult to identify the central fringe.
Ruihuan Fang +8 more
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PRX Quantum, 2022 The purpose of quantum technologies is to explore how quantum effects can improve on existing solutions for the treatment of information. Quantum photonics sensing holds great promise for reaching a more efficient trade-off between invasivity and quality
Marco Barbieri
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