Results 31 to 40 of about 727,743 (336)

Proposal for demonstration of long-range cluster state entanglement in the presence of photon loss

open access: yesAPL Photonics, 2017
Photonic cluster states are a crucial resource for optical quantum computing. Recently a quantum dot single photon source has been demonstrated to produce strings of single photons in a small linear cluster state.
Thomas Nutz   +3 more
doaj   +1 more source

On the power of one pure steered state for EPR-steering with a pair of qubits

open access: yesNew Journal of Physics, 2023
As originally introduced, the Einstein, Podolsky and Rosen (EPR) phenomenon was the ability of one party (Alice) to steer, by her choice between two measurement settings, the quantum system of another party (Bob) into two distinct ensembles of pure ...
Qiu-Cheng Song   +2 more
doaj   +1 more source

A new diabatization scheme for direct quantum dynamics : procrustes diabatization [PDF]

open access: yes, 2020
We present a new scheme for diabatizing electronic potential energy surfaces, for use within the recently implemented direct-dynamics grid-based (DD-GB) class of computational nuclear quantum dynamics methods (DD-SM and DD-MCTDH), called Procrustes ...
Habershon, Scott, Richings, Gareth
core   +1 more source

The simplest demonstrations of quantum nonlocality

open access: yesNew Journal of Physics, 2012
We investigate the complexity cost of demonstrating the key types of nonclassical correlations—Bell inequality violation, Einstein, Podolsky, Rosen (EPR)-steering, and entanglement—with independent agents, theoretically and in a photonic experiment.
Dylan J Saunders   +5 more
doaj   +1 more source

Image-charge detection of the Rydberg transition of electrons on superfluid helium confined in a microchannel structure

open access: yesNew Journal of Physics, 2022
The image-charge detection provides a new direct method for the detection of the Rydberg transition of electrons trapped on the surface of liquid helium. The interest in this method is motivated by the possibility to accomplish the spin state readout for
S Zou, D Konstantinov
doaj   +1 more source

On factorized overlaps: Algebraic Bethe Ansatz, twists, and separation of variables

open access: yesNuclear Physics B, 2021
We investigate the exact overlaps between eigenstates of integrable spin chains and a special class of states called “integrable initial/final states”.
Tamás Gombor, Balázs Pozsgay
doaj   +1 more source

Quantum feedback with weak measurements [PDF]

open access: yes, 1999
The problem of feedback control of quantum systems by means of weak measurements is investigated in detail. When weak measurements are made on a set of identical quantum systems, the single-system density matrix can be determined to a high degree of ...
A. Blaquiere   +54 more
core   +2 more sources

Dynamics of quantum systems [PDF]

open access: yesPhysical Review E, 2001
A relation between the eigenvalues of an effective Hamilton operator and the poles of the $S$ matrix is derived which holds for isolated as well as for overlapping resonance states. The system may be a many-particle quantum system with two-body forces between the constituents or it may be a quantum billiard without any two-body forces.
openaire   +3 more sources

Interfering trajectories in experimental quantum-enhanced stochastic simulation

open access: yesNature Communications, 2019
Quantum devices should allow simulating stochastic processes using less memory than classical counterparts, but only if quantum coherence is maintained through multiple steps.
Farzad Ghafari   +5 more
doaj   +1 more source

Quantum Quench Dynamics [PDF]

open access: yesAnnual Review of Condensed Matter Physics, 2018
Quench dynamics is an active area of study encompassing condensed matter physics and quantum information, with applications to cold-atomic gases and pump-probe spectroscopy of materials. Recent theoretical progress in studying quantum quenches is reviewed.
openaire   +2 more sources

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