Results 71 to 80 of about 142,025 (180)
Connecting Fisher information to bulk entanglement in holography
Journal of High Energy Physics, 2018 In the context of relating AdS/CFT to quantum information theory, we propose a holographic dual of Fisher information metric for mixed states in the boundary field theory.
Souvik Banerjee +2 more
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Improving sum uncertainty relations with the quantum Fisher information
Physical Review Research, 2022 We show how preparation uncertainty relations that are formulated as sums of variances may be tightened by using the quantum Fisher information to quantify quantum fluctuations.
Shao-Hen Chiew, Manuel Gessner
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Maximum Fisher information in mixed state quantum systems
, 2004 We deal with the maximization of classical Fisher information in a quantum system depending on an unknown parameter. This problem has been raised by physicists, who defined [Helstrom (1967) Phys. Lett.
Luati, Alessandra
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Information theoretical approach to detecting quantum gravitational corrections
Journal of High Energy PhysicsIn this paper, we investigate the scales at which quantum gravitational corrections can be detected in a black hole using information theory. This is done by calculating the Kullback-Leibler divergence for the probability distributions obtained from the ...
Behnam Pourhassan +7 more
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Fisher Information and Quantum Mechanics
International Research Journal of Pure and Applied Chemistry, 2012 A suggestive relation links Fisher' information measure (FIM)Iand Schrodinger equation (SE). The connection is based upon the fact that the constrained minimization of I leads to a SE. This, in turn, is the origin of intriguing relationships between various aspects of SE, on the one hand, and the formalism of statistical mechanics derived from Jaynes's
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Scattering as a Quantum Metrology Problem: A Quantum Walk Approach
Entropy, 2020 We address the scattering of a quantum particle by a one-dimensional barrier potential over a set of discrete positions. We formalize the problem as a continuous-time quantum walk on a lattice with an impurity and use the quantum Fisher information as a ...
Francesco Zatelli +2 more
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Physical Review Research, 2020 Quantum entanglement is a quantum-mechanical phenomenon where the quantum state of a many-body system with many degrees of freedom cannot be described independently of the state of each body with a given degree of freedom, no matter how far apart in ...
George Mathew +11 more
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Dynamics of Quantum Fisher information in a spin-boson model
, 2013 Quantum Fisher information characterizes the phase sensitivity of qubits in the spin-boson model with a finite bandwidth spectrum. In contrast with Markovian reservoirs, the quantum Fisher information will flow from the environments to qubits after some ...
Hao, Xiang, Tong, Ninghua, Zhu, Shiqun
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Development on quantum metrology with quantum Fisher information
Acta Physica Sinica, 2019 Quantum metrology is one of the hot topics in ultra-cold atoms physics. It is now well established that with the help of entanglement, the measurement sensitivity can be greatly improved with respect to the current generation of interferometers that are using classical sources of particles.
Zhi-Hong Ren +3 more
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Magnetometry via a double-pass continuous quantum measurement of atomic spin
, 2009 We argue that it is possible in principle to reduce the uncertainty of an atomic magnetometer by double-passing a far-detuned laser field through the atomic sample as it undergoes Larmor precession. Numerical simulations of the quantum Fisher information
A. Holevo +13 more
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