Results 21 to 30 of about 4,217,432 (315)
Quantifying Athermality and Quantum Induced Deviations from Classical Fluctuation Relations
Entropy, 2020 In recent years, a quantum information theoretic framework has emerged for incorporating non-classical phenomena into fluctuation relations. Here, we elucidate this framework by exploring deviations from classical fluctuation relations resulting from the
Zoë Holmes +3 more
doaj +1 more source
Quantum channel correction outperforming direct transmission
Nature Communications, 2022 Quantum channel correction could provide a remedy to unavoidable losses in long-distance quantum communication, but the break-even point has escaped demonstration so far.
Sergei Slussarenko +7 more
doaj +1 more source
Non-Hermitian bulk–boundary correspondence in quantum dynamics [PDF]
Nature Physics, 2019 Bulk–boundary correspondence, a guiding principle in topological matter, relates robust edge states to bulk topological invariants. Its validity, however, has so far been established only in closed systems.
Lei Xiao +6 more
semanticscholar +1 more source
Trinity of relational quantum dynamics [PDF]
Physical Review D, 2019 The problem of time in quantum gravity calls for a relational solution. Using quantum reduction maps, we establish a previously unknown equivalence between three approaches to relational quantum dynamics: 1) relational observables in the clock-neutral ...
Philipp A. Hoehn +2 more
semanticscholar +1 more source
Nonlocality in Bell’s Theorem, in Bohm’s Theory, and in Many Interacting Worlds Theorising
Entropy, 2018 “Locality” is a fraught word, even within the restricted context of Bell’s theorem. As one of us has argued elsewhere, that is partly because Bell himself used the word with different meanings at different stages in his career.
Mojtaba Ghadimi +2 more
doaj +1 more source
A quantum algorithm for evolving open quantum dynamics on quantum computing devices [PDF]
Scientific Reports, 2019 Designing quantum algorithms for simulating quantum systems has seen enormous progress, yet few studies have been done to develop quantum algorithms for open quantum dynamics despite its importance in modeling the system-environment interaction found in ...
Zixuan Hu, Rongxin Xia, S. Kais
semanticscholar +1 more source
Scrambling Dynamics and Out-of-Time-Ordered Correlators in Quantum Many-Body Systems [PDF]
PRX Quantum, 2022 This tutorial article introduces the physics of quantum information scrambling in quantum many-body systems. The goals are to understand how to precisely quantify the spreading of quantum information and how causality emerges in complex quantum systems ...
Shenglong Xu, Brian Swingle
semanticscholar +1 more source
Scalable ion–photon quantum interface based on integrated diffractive mirrors
npj Quantum Information, 2017 Quantum computing: high-resolution optics built directly into a micro-fabricated ion trap Building large-scale quantum computers or distributed networks of quantum computers requires small-scale nodes to be readily replicated and effectively connected ...
Moji Ghadimi +11 more
doaj +1 more source
Quantum simulation of real-space dynamics [PDF]
Quantum, 2022 Quantum simulation is a prominent application of quantum computers. While there is extensive previous work on simulating finite-dimensional systems, less is known about quantum algorithms for real-space dynamics.
Andrew M. Childs +4 more
semanticscholar +1 more source
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
doaj +1 more source