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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
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State-dependent error bound for digital quantum simulation of driven systems [PDF]
Physical Review A 105, L050601 (2022), 2022 Digital quantum simulation is a promising application of quantum computers, where quantum dynamics is simulated by using quantum gate operations. Many techniques for decomposing a time-evolution operator of quantum dynamics into simulatable quantum gate operations have been proposed, while these methods cause some errors.
arxiv +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
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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
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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
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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
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The dynamical quantum Zeno effect in quantum decision theory [PDF]
Physics Letters A, 127111, 2020, 2020 In this paper it is proposed the dynamical quantum Zeno Effect in quantum decision theory. The measurement postulate is not an essential ingredient for the explanation of the quantum Zeno effect, a dynamical account is given in quantum physics. In this account, the entanglement between the system of interest and the apparatus inhibit the quantum ...
arxiv +1 more source
Dynamical quantum determinants and Pfaffians [PDF]
In: Interactions of Quantum Affine Algebras with Cluster Algebras,
Current Algebras and Categorification. J. Greenstein et. al. eds., Prog.
Math., vol 337. 2021. pp 427-440, 2020 We introduce the dynamical quantum Pfaffian on the dynamical quantum general linear group and prove its fundamental transformation identity. Hyper quantum dynamical Pfaffian is also introduced and formulas connecting them are given.
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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
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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
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