Results 1 to 10 of about 727,743 (336)

Dynamic compensation of stray electric fields in an ion trap using machine learning and adaptive algorithm

open access: yesScientific 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

open access: yesnpj 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

open access: yesEntropy, 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

open access: yesNature 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

open access: yesEntropy, 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]

open access: yes, 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

Time-reversal symmetric work distributions for closed quantum dynamics in the histories framework [PDF]

open access: yes, 2017
A central topic in the emerging field of quantum thermodynamics is the definition of thermodynamic work in the quantum regime. One widely used solution is to define work for a closed system undergoing non-equilibrium dynamics according to the two-point ...
Anders, Janet, Miller, Harry J. D.
core   +2 more sources

Nonlocality in Bell’s Theorem, in Bohm’s Theory, and in Many Interacting Worlds Theorising

open access: yesEntropy, 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

open access: yesnpj 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

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