Results 11 to 20 of about 9,545 (228)
Quantum correlations for anonymous metrology [PDF]
Quantum, 2019 We introduce the task of anonymous metrology, in which a physical parameter of an object may be determined without revealing the object's location. Alice and Bob share a correlated quantum state, with which one of them probes the object.
A. J. Paige, Benjamin Yadin, M. S. Kim
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Photonic quantum metrology [PDF]
AVS Quantum Science, 2020 Quantum metrology is one of the most promising applications of quantum technologies. The aim of this research field is the estimation of unknown parameters exploiting quantum resources, whose application can lead to enhanced performances with respect to classical strategies.
Emanuele Polino +3 more
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Physical Review Letters, 2006 We point out a general framework that encompasses most cases in which quantum effects enable an increase in precision when estimating a parameter (quantum metrology). The typical quantum precision-enhancement is of the order of the square root of the number of times the system is sampled.
GIOVANNETTI, VITTORIO +2 more
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npj Quantum Information, 2023 We demonstrate that the contextuality of measurement selection can enhance the precision of quantum metrology with a simple linear optical experiment. Contextuality is a nonclassical property known as a resource for various quantum information processing
Jeongwoo Jae +4 more
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Physics OpenWe address the characterization of two-qubit gates, focusing on bounds to precision in the joint estimation of the three parameters that define their Cartan decomposition.
Gabriele Fazio +2 more
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Incompatibility in Multi-Parameter Quantum Metrology with Fermionic Gaussian States [PDF]
Proceedings, 2019 In this article we derive a closed form expression for the incompatibility condition in multi-parameter quantum metrology when the reference states are Fermionic Gaussian states.
Angelo Carollo +2 more
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Variational-state quantum metrology
New Journal of Physics, 2020 Quantum technologies exploit entanglement to enhance various tasks beyond their classical limits including computation, communication and measurements.
Bálint Koczor +4 more
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Quantum measurement encoding for quantum metrology
Physical Review ResearchPreserving the precision of the parameter of interest in the presence of environmental decoherence is an important yet challenging task in dissipative quantum sensing. In this work, we study quantum metrology when the decoherence effect is unraveled by a
Jing Yang
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Speed limit of quantum metrology. [PDF]
Sci Rep, 2023 AbstractQuantum metrology employs nonclassical systems to improve the sensitivity of measurements. The ultimate limit of this sensitivity is dictated by the quantum Cramér–Rao bound. On the other hand, the quantum speed limit bounds the speed of dynamics of any quantum process.
Maleki Y, Ahansaz B, Maleki A.
europepmc +4 more sources