Results 11 to 20 of about 734,222 (292)
Scientific Reports, 2022 Surface ion traps are among the most promising technologies for scaling up quantum computing machines, but their complicated multi-electrode geometry can make some tasks, including compensation for stray electric fields, challenging both at the level of ...
Moji Ghadimi +5 more
doaj +1 more source
Quantum steering with vector vortex photon states with the detection loophole closed
npj Quantum Information, 2022 Violating a nonlocality inequality enables the most powerful remote quantum information tasks and fundamental tests of quantum physics. Loophole-free photonic verification of nonlocality has been achieved with polarization-entangled photon pairs, but not
Sergei Slussarenko +7 more
doaj +1 more source
Implications of Local Friendliness Violation for Quantum Causality
Entropy, 2021 We provide a new formulation of the Local Friendliness no-go theorem of Bong et al. [Nat. Phys. 16, 1199 (2020)] from fundamental causal principles, providing another perspective on how it puts strictly stronger bounds on quantum reality than Bell’s ...
Eric G. Cavalcanti, Howard M. Wiseman
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
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
Path integral formulation for quantum nonadiabatic dynamics and the mixed quantum-classical limit [PDF]
, 2007 This work identifies geometric effects on dynamics due to nonadiabatic couplings in Born Oppenheimer systems and provides a systematic method for deriving corrections to mixed quantum-classical methods. Specifically, an exact path integral formulation of
Krishna, Vinod
core +2 more sources
Quantum non-Markovian piecewise dynamics from collision models [PDF]
, 2017 Recently, a large class of quantum non-Markovian piecewise dynamics for an open quantum system obeying closed evolution equations has been introduced [B. Vacchini, Phys. Rev. Lett. 117, 230401 (2016)].
Ciccarello, Francesco +3 more
core +2 more sources
Quantum feedback with weak measurements [PDF]
, 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
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
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