Results 31 to 40 of about 828,437 (187)

Quantum Pareto optimal control [PDF]

open access: yesPhysical Review A, 2008
Submitted to Physical Review ...
Chakrabarti, Raj   +2 more
openaire   +2 more sources

Chaotic motion of scalar particle coupling to Chern–Simons invariant in the stationary axisymmetric Einstein–Maxwell dilaton black hole spacetime

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
We investigate the motion of a test scalar particle coupling to the Chern–Simons (CS) invariant in the background of a stationary axisymmetric black hole in the Einstein–Maxwell–Dilaton–Axion (EMDA) gravity.
Lina Zhang   +3 more
doaj   +1 more source

Control Theoretical Expression of Quantum Systems And Lower Bound of Finite Horizon Quantum Algorithms [PDF]

open access: yes, 2007
We provide a control theoretical method for a computational lower bound of quantum algorithms based on quantum walks of a finite time horizon. It is shown that given a quantum network, there exists a control theoretical expression of the quantum system ...
Yanagisawa, Masahiro
core   +1 more source

Positive and Negative Photoconductivity Conversion Induced by H2O Molecule Adsorption in WO3 Nanowire

open access: yesNanoscale Research Letters, 2019
Negative photoconductivity effect has been observed in the Au/WO3 nanowire/Au devices in a high humidity environment, which might be attributed to the accumulation of H+ ions on the surface of WO3 nanowire.
Yahui Liu   +8 more
doaj   +1 more source

Holographic superconductors in 4D Einstein-Gauss-Bonnet gravity

open access: yesJournal of High Energy Physics, 2020
We investigate the neutral AdS black-hole solution in the consistent D → 4 Einstein-Gauss-Bonnet gravity proposed in [K. Aoki, M.A. Gorji, and S. Mukohyama, Phys. Lett.
Xiongying Qiao   +4 more
doaj   +1 more source

Effective metric of spinless binaries with radiation-reaction effect up to fourth post-Minkowskian order in effective-one-body theory

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
By means of the scattering angles, we obtain an effective metric of spinless binaries with radiation-reaction effects up to fourth post-Minkowskian order, which is the foundation of the effective-one-body theory.
Jiliang Jing   +3 more
doaj   +1 more source

Thermodynamics and phase transition of Bardeen black hole via Rényi statistics in grand canonical ensemble and canonical ensemble

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
The thermodynamics of the Bardeen black hole in asymptotically flat space is investigated with the corrected first law of thermodynamics via Rényi statistics.
Zefeng Wang   +3 more
doaj   +1 more source

Quantum Control without Quantum States

open access: yesPRX Quantum
We show that combining ideas from the fields of quantum invariants and optimal control can be used to design optimal quantum control solutions without explicit reference to quantum states. The states are specified only implicitly in terms of operators to which they are eigenstates.
Modesto Orozco-Ruiz   +2 more
openaire   +3 more sources

Quantum control in spintronics [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2011
Superposition and entanglement are uniquely quantum phenomena. Superposition incorporates a phase that contains information surpassing any classical mixture. Entanglement offers correlations between measurements in quantum systems that are stronger than any that would be possible classically.
Ardavan, A, Briggs, G
openaire   +4 more sources

Observation of minimal and maximal speed limits for few and many-body states

open access: yesNature Communications
Tracking the time evolution of a quantum state allows one to verify the thermalization rate or the propagation speed of correlations in generic quantum systems.
Zitian Zhu   +32 more
doaj   +1 more source

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