Results 11 to 20 of about 844,518 (291)
Experimental optical phase measurement approaching the exact Heisenberg limit
Nature Communications, 2018 Measurements of an unknown optical phase have not yet been performed with the ultimate precision, i.e. saturating the Heisenberg limit. Here, Daryanoosh et al.
Shakib Daryanoosh +4 more
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A possibilistic no-go theorem on the Wigner’s friend paradox
New Journal of Physics, 2023 The famous ‘Wigner’s friend’ paradox highlights the difficulty of modelling the evolution of quantum systems under measurement in situations where observers themselves are considered to be subject to the laws of quantum mechanics.
Marwan Haddara, Eric G Cavalcanti
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Experimental noiseless linear amplification using weak measurements
New Journal of Physics, 2016 The viability of quantum communication schemes rely on sending quantum states of light over long distances. However, transmission loss can degrade the signal strength, adding noise.
Joseph Ho +3 more
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Hybrid quantum-classical chaotic NEMS [PDF]
Physica D: Nonlinear Phenomena 439, 133418 (2022), 2020 We present an exactly solvable model of a hybrid quantum-classical system of a Nitrogen-Vacancy (NV) center spin (quantum spin) coupled to a nanocantilever (classical) and analyze the enforcement of the regular or chaotic classical dynamics onto the quantum spin dynamics.
arxiv +1 more source
Proposal for demonstration of long-range cluster state entanglement in the presence of photon loss
APL 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
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On the power of one pure steered state for EPR-steering with a pair of qubits
New 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
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The simplest demonstrations of quantum nonlocality
New 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
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New 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
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Interfering trajectories in experimental quantum-enhanced stochastic simulation
Nature 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
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Exponential spreading and singular behavior of quantum dynamics near hyperbolic points [PDF]
, 2013 Quantum dynamics of a particle in the vicinity of a hyperbolic point is considered. Expectation values of dynamical variables are calculated, and the singular behavior is analyzed. Exponentially fast extension of quantum dynamics is obtained, and conditions for this realization are analyzed.
arxiv +1 more source