Results 21 to 30 of about 189,634 (137)

Steering Witness and Steering Criterion of Gaussian States

open access: yesEntropy, 2021
Quantum steering is an important quantum resource, which is intermediate between entanglement and Bell nonlocality. In this paper, we study steering witnesses for Gaussian states in continuous-variable systems.
Ruifen Ma   +3 more
doaj   +1 more source

Number-phase uncertainty relations and bipartite entanglement detection in spin ensembles [PDF]

open access: yesQuantum, 2023
We present a method to detect bipartite entanglement based on number-phase-like uncertainty relations in split spin ensembles. First, we derive an uncertainty relation that plays the role of a number-phase uncertainty for spin systems.
Giuseppe Vitagliano   +6 more
doaj   +1 more source

Exploring Multipartite Steering Effect Using Bell Operators

open access: yesEntropy, 2019
While Bell operators are exploited in detecting Bell nonlocality and entanglement classification, we demonstrate their usefulness in exploring Einstein−Podolsky−Rosen (EPR) steering, which represents the quantum correlation intermediate ...
Li-Yi Hsu, Shoichi Kawamoto
doaj   +1 more source

Cyclic Einstein-Podolsky-Rosen steering

open access: yesPhysical Review Research, 2021
Einstein-Podolsky-Rosen (EPR) steering is a form of quantum correlation that exhibits a fundamental asymmetry in the properties of quantum systems. Given two observers, Alice and Bob, there are known to exist bipartite entangled states which are one-way ...
István Márton   +3 more
doaj   +1 more source

Asymmetric Quantum Steering Generated by Triple-Photon Down-Conversion Process With Injected Signals

open access: yesFrontiers in Physics, 2022
Asymmetric quantum steering generated by the triple-photon down-conversion process in an injected signal optical cavity is investigated. The triple-photon down-conversion process can be realized in an optical superlattice by quasi-phase-matching ...
T. H. Chen   +4 more
doaj   +1 more source

Einstein-Podolsky-Rosen Steering for Mixed Entangled Coherent States

open access: yesEntropy, 2021
By using the Born Markovian master equation, we study the relationship among the Einstein–Podolsky–Rosen (EPR) steering, Bell nonlocality, and quantum entanglement of entangled coherent states (ECSs) under decoherence.
Sayed Abdel-Khalek   +3 more
doaj   +1 more source

Strategies for synthesis of yardsticks and abaci for nanometre distance measurements by pulsed EPR [PDF]

open access: yes, 2014
Silvia Valera is grateful for support by EPSRC and Bela E. Bode acknowledges support by EastCHEM.Pulsed electron paramagnetic resonance (EPR) techniques have been found to be an efficient tool for elucidation of structure in complex biological systems as
Bode, Bela Ernest   +4 more
core   +1 more source

Sharing EPR steering between sequential pairs of observers

open access: yes, 2023
The recycling of quantum correlations has attracted widespread attention both theoretically and experimentally. Previous works show that bilateral sharing of nonlocality is impossible under mild measurement strategy and 2-qubit entangled state can be ...
Lv, Qiao-Qiao   +3 more
core   +1 more source

Optimal strategies for tests of EPR-Steering with no detection loophole

open access: yes, 2014
It has been shown in earlier works that the vertices of Platonic solids are good measurement choices for tests of EPR-Steering. Such measurements are regularly spaced, and measurement diversity is a good feature for making EPR-Steering inequalities ...
David A. Evans   +3 more
core   +1 more source

EPR toolbox

open access: yes, 2022
A MATLAB(r) toolbox for importing, preprocessing, display, analysis, and postprocessing of electron spin resonance (EPR) spectroscopy data. This toolbox implements methods of general interest for EPR spectroscopy and is used, inter alia, by the cwEPR ...
Biskup, Till, Meyer, Deborah
core   +1 more source

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