Results 31 to 40 of about 9,545 (228)
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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Quantum Metrology Assisted by Abstention [PDF]
Physical Review Letters, 2013 Some typos ...
Gendra, B. +4 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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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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‘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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Quantum metrology with molecular ensembles
, 2014 This work was supported by the EPSRC through QIP IRC (Grants No. GR/S82176/01 and No. GR/S15808/01), the National Research Foundation and Ministry of Education, Singapore, the DAAD, and the Royal Society.The field of quantum metrology promisesmeasurement
Benjamin, Simon C. +5 more
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Cryptographic approach to quantum metrology [PDF]
Physical Review A, 2022 3 figures ...
Shettell, Nathan +2 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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Towards practical quantum metrology with photon counting [PDF]
, 2016 Quantum metrology aims to realise new sensors operating with the ultimate in precision measurement. However, optical loss, the complexity of proposed metrology schemes, and interferometric instability each prevent the realisation of practical quantum ...
Saunders, Dylan J +11 more
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Strategies for Positive Partial Transpose (PPT) States in Quantum Metrologies with Noise
, 2021 Quantum metrology overcomes standard precision limits and has the potential to play a key role in quantum sensing. Quantum mechanics, through the Heisenberg uncertainty principle, imposes limits on the precision of measurements.
Majumder, Arunava +5 more
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