Results 21 to 30 of about 1,060,572 (311)
The quantum field as a quantum computer [PDF]
Physics Letters A, 2012 4 PRL-style pages with 4 eps ...
Giacomo Mauro DʼAriano +1 more
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Nature Communications, 2021 Operating donor-based quantum computers in silicon is hindered by the dependence of inter-qubit coupling on the precise donor position. Here, the authors show controlled rotation operation on exchange-coupled electron spins in the weak-exchange regime ...
Mateusz T. Ma̧dzik +8 more
doaj +1 more source
Multiparameter Estimation with Two-Qubit Probes in Noisy Channels
Entropy, 2023 This work compares the performance of single- and two-qubit probes for estimating several phase rotations simultaneously under the action of different noisy channels.
Lorcán O. Conlon +2 more
doaj +1 more source
Defects in Quantum Computers [PDF]
Scientific Reports, 2018 AbstractThe shift of interest from general purpose quantum computers to adiabatic quantum computing or quantum annealing calls for a broadly applicable and easy to implement test to assess how quantum or adiabatic is a specific hardware. Here we propose such a test based on an exactly solvable many body system–the quantum Ising chain in transverse ...
Gardas, Bartłomiej +3 more
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Enhancing quantum teleportation efficacy with noiseless linear amplification
Nature Communications, 2023 Quantum teleportation constitutes a fundamental tool for various applications in quantum communication and computation. However, state-of-the-art continuous-variable quantum teleportation is restricted to moderate fidelities and short-distance ...
Jie Zhao +8 more
doaj +1 more source
A Uniform Quantum Computing Model Based on Virtual Quantum Processors [PDF]
2021 IEEE International Conference on Web Services (ICWS),
Chicago, IL, USA, 2021, pp. 32-41, 2023 Quantum Computers, one fully realized, can represent an exponential boost in computing power. However, the computational power of the current quantum computers, referred to as Noisy Internediate Scale Quantum, or NISQ, is severely limited because of environmental and intrinsic noise, as well as the very low connectivity between qubits compared to their
arxiv +1 more source
Discriminating mixed qubit states with collective measurements
Communications Physics, 2023 It is a central fact in quantum mechanics that non-orthogonal states cannot be distinguished perfectly. In general, the optimal measurement for distinguishing such states is a collective measurement.
Lorcán O. Conlon +3 more
doaj +1 more source
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 ...
Jiannis K. Pachos +2 more
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The Rise of Quantum Internet Computing [PDF]
arXiv, 2022 This article highlights quantum Internet computing as referring to distributed quantum computing over the quantum Internet, analogous to (classical) Internet computing involving (classical) distributed computing over the (classical) Internet. Relevant to quantum Internet computing would be areas of study such as quantum protocols for distributed nodes ...
arxiv
Adiabatic Quantum Computation is Equivalent to Standard Quantum Computation [PDF]
45th Annual IEEE Symposium on Foundations of Computer Science, 2004 Adiabatic quantum computation has recently attracted attention in the physics and computer science communities, but its computational power was unknown. We describe an efficient adiabatic simulation of any given quantum algorithm, which implies that the adiabatic computation model and the conventional quantum computation model are polynomially ...
D. Aharonov +5 more
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