Results 21 to 30 of about 30,582 (261)
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
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Relativistic Bohmian trajectories of photons via weak measurements
Nature Communications, 2022 Making Bohmian mechanics fully compatible with special relativity is still an ongoing challenge. Here, the authors make a further step in this direction by providing a way of constructing the relativistic Bohmian-type velocity field of single photons ...
Joshua Foo +3 more
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Scholarpedia, 2018 A quantum computer is a machine that exploits quantum phenomena to store information and perform computations. The chief goal of this article is to provide a brief but comprehensive introduction to quantum computing. It overviews some mathematical underpinnings of quantum computation for readers with only a basic knowledge of linear algebra and ...
Pieper, Jaden K., Lladser, Manuel E.
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On the equivalence between squeezing and entanglement potential for two-mode Gaussian states
Scientific Reports, 2023 The maximum amount of entanglement achievable under passive transformations by continuous-variable states is called the entanglement potential. Recent work has demonstrated that the entanglement potential is upper-bounded by a simple function of the ...
Bohan Li +5 more
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Coherent control of a donor-molecule electron spin qubit in silicon
Nature Communications, 2021 Multi-donor molecules in Si provide a promising qubit platform, offering advantages over single donor qubits in terms of performance and fabrication. Here, the authors report a single qubit gate and long coherence times in a P donor molecule qubit in ...
Lukas Fricke +8 more
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QUANTUM HOLONOMIES FOR QUANTUM COMPUTING [PDF]
International Journal of Modern Physics B, 2001 Holonomic Quantum Computation (HQC) is an all-geometrical approach to quantum information processing. In the HQC strategy information is encoded in degenerate eigen-spaces of a parametric family of Hamiltonians. The computational network of unitary quantum gates is realized by driving adiabatically the Hamiltonian parameters along loops in a control ...
Pachos, Jiannis, Zanardi, Paolo
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, 1997 We describe how physics of computation determines computational complexity. In particular we show how quantum phenomena lead to qualitatively new modes of computation. An ideal quantum computer would allow to face certain tasks out of reach of classical computers, the factorization problem being the most striking example.
Barenco, A, Huelga, S, Ekert, A
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Surpassing the no-cloning limit with a heralded hybrid linear amplifier for coherent states
Nature Communications, 2016 Cloning an unknown quantum state is challenging and the limit on the quality of clones is set by the no-cloning theorem. Here, the authors demonstrated the surpassing of such a limit using an effective quantum cloner based on a hybrid probabilistic ...
Jing Yan Haw +8 more
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Quantum computers, quantum computing, and quantum thermodynamics
Frontiers in Quantum Science and TechnologyQuantum thermodynamics aims to extend standard thermodynamics and non-equilibrium statistical physics to systems with sizes well below the thermodynamic limit. It is a rapidly evolving research field that promises to change our understanding of the foundations of physics, while enabling the discovery of novel thermodynamic techniques and applications ...
Fabrizio Cleri, Fabrizio Cleri
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Programmable quantum circuits in a large-scale photonic waveguide array
npj Quantum InformationOver the past decade, integrated quantum photonic technologies have shown great potential as a platform for studying quantum phenomena and realizing large-scale quantum information processing.
Yang Yang +6 more
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