Unsupervised Quantum Gate Control for Gate-Model Quantum Computers. [PDF]
Sci Rep, 2020 In near-term quantum computers, the operations are realized by unitary quantum gates. The precise and stable working mechanism of quantum gates is essential for the implementation of any complex quantum computations.
Gyongyosi L.
europepmc +6 more sources
Photon-Mediated Quantum Gate between Two Neutral Atoms in an Optical Cavity [PDF]
Physical Review X, 2018 Quantum logic gates are fundamental building blocks of quantum computers. Their integration into quantum networks requires strong qubit coupling to network channels, as can be realized with neutral atoms and optical photons in cavity quantum ...
Stephan Welte +4 more
doaj +4 more sources
Quantum gate teleportation between separated qubits in a trapped-ion processor. [PDF]
Science, 2019 Teleporting a trapped-ion quantum gate Gating—controlling the state of one qubit conditioned on the state of another—is a key procedure in all quantum information processors.
Wan Y +11 more
europepmc +3 more sources
Quantifying the effect of gate errors on variational quantum eigensolvers for quantum chemistry [PDF]
npj Quantum Information, 2022 Variational quantum eigensolvers (VQEs) are leading candidates to demonstrate near-term quantum advantage. Here, we conduct density-matrix simulations of leading gate-based VQEs for a range of molecules.
Kieran Dalton +6 more
doaj +2 more sources
Programmable quantum gate arrays [PDF]
Physical Review Letters, 1997 We show how to construct quantum gate arrays that can be programmed to perform different unitary operations on a data register, depending on the input to some program register.
A. Barenco +9 more
core +4 more sources
Design of gates for quantum computation: the NOT gate [PDF]
International Journal of Modern Physics B, 1996 We offer an alternative to the conventional network formulation of quantum computing. We advance the analog approach to quantum logic gate/circuit construction.
Hotaling, Steven P. +2 more
core +6 more sources
Decoherence and dissipation during a quantum XOR gate operation [PDF]
, 2001 The dynamics of a quantum XOR gate operation in a two-qubit system being coupled to a bath of quantum harmonic oscillators is investigated. Upon applying the numerical quasiadiabatic propagator path integral method, we obtain the numerically precise time-
Michael Thorwart, Peter Hänggi
openalex +3 more sources
Bounding quantum gate error rate based on reported average fidelity [PDF]
New Journal of Physics, 2015 Remarkable experimental advances in quantum computing are exemplified by recent announcements of impressive average gate fidelities exceeding 99.9% for single-qubit gates and 99% for two-qubit gates.
Yuval R Sanders +2 more
doaj +2 more sources
High-fidelity geometric quantum gates exceeding 99.9% in germanium quantum dots [PDF]
Nature CommunicationsAchieving high-fidelity and robust qubit manipulations is a crucial requirement for realizing fault-tolerant quantum computation. Here, we demonstrate a single-hole spin qubit in a germanium quantum dot and characterize its control fidelity using gate ...
Yu-Chen Zhou +13 more
doaj +2 more sources
A quantum approximate optimization method for finding Hadamard matrices [PDF]
Scientific ReportsFinding a Hadamard matrix of a specific order using a quantum computer can lead to a demonstration of practical quantum advantage. Earlier efforts using a quantum annealer were impeded by the limitations of the present quantum resource and its capability
Andriyan Bayu Suksmono
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