Results 61 to 70 of about 92,134 (178)

Asymptotic phase-locking and synchronization in two-qubit systems

open access: yesJournal of Physics Communications, 2023
The paper concerns spontaneous asymptotic phase-locking and synchronization in two-qubit systems undergoing continuous Markovian evolution described by Lindbladian dynamics with normal Lindblad operators.
D Štěrba, J Novotný, I Jex
doaj   +1 more source

Exact dynamics of interacting qubits in a thermal environment: Results beyond the weak coupling limit

open access: yes, 2012
We demonstrate an exact mapping of a class of models of two interacting qubits in thermal reservoirs to two separate spin-bath problems. Based on this mapping, exact numerical simulations of the qubits dynamics can be performed, beyond the weak system ...
Beenakker C W J   +12 more
core   +1 more source

Entanglement Creation and Storage in Two Qubits Coupling to an Anisotropic Heisenberg Spin Chain [PDF]

open access: yes, 2009
The time evolution of the entanglement of a pair of two spin qubits is investigated when the two qubits simultaneously couple to an environment of an anisotropic Heisenberg XXZ spin chain.
Ai   +29 more
core   +1 more source

Nonlinear qubit transformations [PDF]

open access: yesPhysical Review A, 2001
We generalise our previous results of universal linear manipulations [Phys. Rev. A63, 032304 (2001)] to investigate three types of nonlinear qubit transformations using measurement and quantum based schemes. Firstly, nonlinear rotations are studied. We rotate different parts of a Bloch sphere in opposite directions about the z-axis.
Hardy, Lucien, Song, David D.
openaire   +2 more sources

An Intrusion Resistant SCADA Framework Based on Quantum and Post-Quantum Scheme

open access: yesApplied Sciences, 2021
The rapid emergence of quantum computing threatens current Supervisory Control and Data Acquisition (SCADA) security standards, mainly, American Gas Association (AGA)-12.
Sagarika Ghosh   +3 more
doaj   +1 more source

Long-Range Interaction between Charge and Spin Qubits in Quantum Dots

open access: yes, 2017
We analyze and give estimates for the long-distance coupling via floating metallic gates between different types of spin qubits in quantum dots made of different commonly used materials. In particular, we consider the hybrid, the singlet-triplet, and the
Kloeffel, Christoph   +2 more
core   +1 more source

Entanglement reciprocation between qubits and continuous variables [PDF]

open access: yes, 2005
We investigate how entanglement can be transferred between qubits and continuous variable (CV) systems. We find that one ebit borne in maximally entangled qubits can be fully transferred to two CV systems which are initially prepared in pure separable ...
B. W. Shore   +6 more
core   +2 more sources

Semiconductor spin qubits

open access: yesReviews of Modern Physics, 2023
Rev. Mod. Phys.
Burkard, Guido   +4 more
openaire   +2 more sources

Continuous dynamical decoupling and decoherence-free subspaces for qubits with tunable interaction

open access: yes, 2019
Protecting quantum states from the decohering effects of the environment is of great importance for the development of quantum computation devices and quantum simulators.
Fanchini, F. F.   +3 more
core   +2 more sources

Mathematical modeling of processes in quantum computer elements based on methods of quantum theory to improve their efficiency

open access: yesКомпьютерная оптика
The paper studies entangled states of two qubits interacting with each other and with an electromagnetic field. The state of the qubits is determined by a statistical density matrix.
A.A. Biryukov, M.A. Shleenkov
doaj   +1 more source

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