Results 11 to 20 of about 27,088 (288)

Quantifying quantum coherence with quantum Fisher information. [PDF]

Sci Rep, 2017
Quantum coherence is one of the old but always important concepts in quantum mechanics, and now it has been regarded as a necessary resource for quantum information processing and quantum metrology.
Feng XN, Wei LF.
europepmc   +5 more sources

Inequalities for quantum Fisher information [PDF]

Proceedings of the American Mathematical Society, 2009
An inequality relating the Wigner-Yanase information and the SLD-quantum Fisher information was established by Luo (Proc. Amer. Math. Soc., 132, pp. 885-890, 2004).
Imparato, D, Gibilisco, P, Gibilisco, I., Gibilisco P., GIBILISCO I, GIBILISCO, PAOLO, Isola T., Imparato, Daniele Enrico, Isola, T., Isola, T, ISOLA, TOMMASO   +10 more
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Uncertainty principle and quantum Fisher information [PDF]

Annals of the Institute of Statistical Mathematics, 2007
Uncertainty principle, Monotone metrics, Quantum Fisher information, Wigner–Yanase–Dyson information,
Imparato, D, Gibilisco, P, IMPARATO, DANIELE ENRICO, Tommaso Isola, Gibilisco P., Daniele Imparato, Paolo Gibilisco, GIBILISCO, PAOLO, Isola T., GIBILISCO P, Isola, T, ISOLA, TOMMASO   +11 more
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Fisher information universally identifies quantum resources [PDF]

Physical Review Letters, 2021
We show that both the classical as well as the quantum definitions of the Fisher information faithfully identify resourceful quantum states in general quantum resource theories, in the sense that they can always distinguish between states with and ...
Narasimhachar, Varun, Tan, Kok Chuan, Regula, Bartosz   +2 more
core   +5 more sources

Simultaneous Perturbation Stochastic Approximation of the Quantum Fisher Information [PDF]

Quantum, 2021
The Quantum Fisher Information matrix (QFIM) is a central metric in promising algorithms, such as Quantum Natural Gradient Descent and Variational Quantum Imaginary Time Evolution.
Julien Gacon, Christa Zoufal, Giuseppe Carleo, Stefan Woerner   +3 more
doaj   +3 more sources

Continuity of the quantum Fisher information [PDF]

Physical Review A, 2019
In estimating an unknown parameter of a quantum state the quantum Fisher information (QFI) is a pivotal quantity, which depends on the state and its derivate with respect to the unknown parameter. We prove the continuity property for the QFI in the sense
Hassani, M., Rezakhani, A. T., Alipour, S.   +2 more
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Canonical energy is quantum Fisher information [PDF]

Journal of High Energy Physics, 2016
In quantum information theory, Fisher Information is a natural metric on the space of perturbations to a density matrix, defined by calculating the relative entropy with the unperturbed state at quadratic order in perturbations. In gravitational physics,
Nima Lashkari, Mark Van Raamsdonk, Van Raamsdonk, Mark, Lashkari, Nima   +3 more
core   +7 more sources

Quantum Fisher information from randomized measurements [PDF]

Physical Review Letters, 2021
6 + 6 pages with 3 + 3 figuresInternational audienceThe quantum Fisher information (QFI) is a fundamental quantity of interest in many areas from quantum metrology to quantum information theory.
Minguzzi, Anna, Vermersch, Benoît, Branciard, Cyril, Rath, Aniket   +3 more
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Fisher Information In Quantum Statistics [PDF]

Journal of Physics A: Mathematical and General, 2000
Braunstein and Caves (Braunstein S L and Caves C M 1994 Phys. Rev. Lett. 72 3439-- 43) proposed to use Helstrom's quantum information number to define, meaningfully, a metric on the set of all possible states of a given quantum system.
Barndorff-Nielsen, O.E., Gill, R.D., Barndorff-Nielsen, OE, O E Barndorff-nielsen, Dep Wiskunde, Stochastiek, R D Gill, Gill, RD Richard, Universiteit Utrecht   +8 more
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Quantum Fisher Information and its dynamical nature

Reports on Progress in Physics
The importance of the quantum Fisher information metric is testified by the number of applications that this has in very different fields, ranging from hypothesis testing to metrology, passing through thermodynamics.
Abiuso, Paolo, Surace, Jacopo, Scandi, Matteo, De Santis, Dario   +3 more
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