Results 101 to 110 of about 142,025 (180)

Robust Estimation of the Quantum Fisher Information on a Quantum Processor

PRX Quantum
We present the experimental measurement, on a quantum processor, of a series of polynomial lower bounds that converge to the quantum Fisher information (QFI), a fundamental quantity for certifying multipartite entanglement that is useful for metrological
Vittorio Vitale, Aniket Rath, Petar Jurcevic, Andreas Elben, Cyril Branciard, Benoît Vermersch   +5 more
doaj   +1 more source

Semiclassical Approach to Quantum Fisher Information

Physical Review Letters
Quantum sensors driven into the quantum chaotic regime can have dramatically enhanced sensitivity, which, however, depends intricately on the details of the underlying classical phase space. Here, we develop an accurate semiclassical approach that provides direct and efficient access to the phase-space-resolved quantum Fisher information (QFI), the ...
Mahdi RouhbakhshNabati, Daniel Braun, Henning Schomerus   +2 more
openaire   +2 more sources

Weak convexity of Fisher information matrix and superresolved localization of blinking sources of light

Physical Review Research
A group of techniques known by the general name of single-molecule localization microscopy reaches a nanometer-scale spatial resolution of point light emitters, well below the diffraction limit of traditional microscopy.
Dmitri B. Horoshko, Alexander B. Mikhalychev, Fedor Jelezko, Polina P. Kuzhir   +3 more
doaj   +1 more source

Quantum Fisher Information: Theory and Applications

, 2017
Entanglement is at the heart of quantum technologies such as quantum information and quantum metrology. Providing larger quantum Fisher information (QFI), entangled systems can be better resources than separable systems in quantum metrology. QFI topic is a very active research area and it has many possible usage areas in quantum information domain.
openaire   +2 more sources

Quantum Fisher information of atomic system interacting with a single cavity mode in the presence of Kerr medium. [PDF]

Sci Rep, 2019
Zidan N, Abdel-Hameed HF, Metwally N.
europepmc   +1 more source

The effects of vacuum fluctuations on teleportation of quantum Fisher information. [PDF]

Sci Rep, 2017
Jin Y.
europepmc   +1 more source

Quantifying Magnetic Sensitivity of Radical Pair Based Compass by Quantum Fisher Information. [PDF]

Sci Rep, 2017
Guo LS, Xu BM, Zou J, Shao B.
europepmc   +1 more source

How the Relativistic Motion Affect Quantum Fisher Information and Bell Non-locality for Multipartite state. [PDF]

Sci Rep, 2017
Huang CY, Ma W, Wang D, Ye L.
europepmc   +1 more source

Protecting quantum Fisher information of N-qubit GHZ state by weak measurement with flips against dissipation. [PDF]

Sci Rep, 2017
Chen Y, Zou J, Long ZW, Shao B.
europepmc   +1 more source

Distribution of quantum Fisher information in asymmetric cloning machines. [PDF]

Sci Rep, 2014
Xiao X, Yao Y, Zhou LM, Wang X.
europepmc   +1 more source