Results 51 to 60 of about 6,416 (187)

Classical signature of quantum annealing

open access: yesFrontiers in Physics, 2014
A pair of recent articles concluded that the D-Wave One machine actuallyoperates in the quantum regime, rather than performing some classical evolution.
John A Smolin, Graeme eSmith
doaj   +1 more source

Stability of the Discrete Time-Crystalline Order in Spin-Optomechanical and Open Cavity QED Systems

open access: yesPhotonics, 2022
Discrete time crystals (DTC) have been demonstrated experimentally in several different quantum systems in the past few years. Spin couplings and cavity losses have been shown to play crucial roles for realizing DTC order in open many-body systems out of
Zhengda Hu, Xingyu Gao, Tongcang Li
doaj   +1 more source

Multiphoton Quantum Reservoirs For Robust Multidimensional Computing

open access: yesAdvanced Science, EarlyView.
Projective measurements reveal hidden multidimensional quantum networks within classical multiphoton fields, enabling robust quantum reservoirs for room‐temperature quantum simulation, prediction, and information processing. These networks transform noisy classical photonic platforms into scalable quantum computational architectures.
Mingyuan Hong   +10 more
wiley   +1 more source

Transverse decoherence and coherent spectra in long bunches with space charge

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2012
The transverse bunch spectrum and the transverse decoherence/recoherence following an initial bunch offset are important phenomena in synchrotrons and storage rings, and are widely used for beam and lattice measurements.
Vladimir Kornilov   +1 more
doaj   +1 more source

Implementation of Classical Communication in a Quantum World

open access: yesInformation, 2012
Observations of quantum systems carried out by finite observers who subsequently communicate their results using classical data structures can be described as “local operations, classical communication” (LOCC) observations.
Chris Fields
doaj   +1 more source

Quantum security and theory of decoherence

open access: yesNew Journal of Physics, 2022
We sketch a relation between two crucial, yet independent, fields in quantum information research, viz. quantum decoherence and quantum cryptography. We investigate here how the standard cryptographic assumption of shielded laboratory, stating that data ...
P Mironowicz
doaj   +1 more source

Quantifying Decoherence via Increases in Classicality

open access: yesEntropy, 2021
As a direct consequence of the interplay between the superposition principle of quantum mechanics and the dynamics of open systems, decoherence is a recurring theme in both foundational and experimental exploration of the quantum realm.
Shuangshuang Fu, Shunlong Luo
doaj   +1 more source

Fundamental Challenges, Physical Implementations, and Integration Strategies for Ising Machines in Large‐Scale Optimization Tasks

open access: yesAdvanced Electronic Materials, EarlyView.
Ising machines are emerging as specialized hardware solvers for computationally hard optimization problems. This review examines five major platforms—digital CMOS, analog CMOS, emerging devices, coherent optics, and quantum systems—highlighting physics‐rooted advantages and shared bottlenecks in scalability and connectivity.
Hyunjun Lee, Joon Pyo Kim, Sanghyeon Kim
wiley   +1 more source

Equivalence of the Symbol Grounding and Quantum System Identification Problems

open access: yesInformation, 2014
The symbol grounding problem is the problem of specifying a semantics for the representations employed by a physical symbol system in a way that is neither circular nor regressive.
Chris Fields
doaj   +1 more source

Zero-dimensional models for gravitational and scalar QED decoherence

open access: yesNew Journal of Physics, 2022
We investigate the dynamics of two quantum mechanical oscillator system–bath toy models obtained by truncating to zero spatial dimensions linearized gravity coupled to a massive scalar field and scalar quantum electrodynamics (QED).
Qidong Xu, M P Blencowe
doaj   +1 more source

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