Results 1 to 10 of about 1,109 (45)

Quantum entanglement and spin control in silicon nanocrystal. [PDF]

open access: yesPLoS ONE, 2012
Selective coherence control and electrically mediated exchange coupling of single electron spin between triplet and singlet states using numerically derived optimal control of proton pulses is demonstrated.
Vesna Berec
doaj   +2 more sources

Markovian evolution of strongly coupled harmonic oscillators [PDF]

open access: yes, 2014
We investigate how to model Markovian evolution of coupled harmonic oscillators, each of them interacting with a local environment. When the coupling between the oscillators is weak, dissipation may be modeled using local Lindblad terms for each of the ...
Andersson, Erika   +3 more
core   +2 more sources

Quantum Primitives [PDF]

open access: yes, 2009
“Copyright 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.”We explore possible characterisations of entanglement ...
Spring, William Joseph
core   +2 more sources

Multi-partite entanglement can speed up quantum key distribution in networks

open access: yesNew Journal of Physics, 2017
The laws of quantum mechanics allow for the distribution of a secret random key between two parties. Here we analyse the security of a protocol for establishing a common secret key between N parties (i.e.
Michael Epping   +3 more
doaj   +1 more source

Universal control of ion qubits in a scalable microfabricated planar trap

open access: yesNew Journal of Physics, 2016
We demonstrate universal quantum control over chains of ions in a surface-electrode ion trap, including all the fundamental operations necessary to perform algorithms in a one-dimensional, nearest-neighbor quantum computing architecture.
C D Herold   +6 more
doaj   +1 more source

Transport implementation of the Bernstein–Vazirani algorithm with ion qubits

open access: yesNew Journal of Physics, 2016
Using trapped ion quantum bits in a scalable microfabricated surface trap, we perform the Bernstein–Vazirani algorithm. Our architecture takes advantage of the ion transport capabilities of such a trap.
S D Fallek   +5 more
doaj   +1 more source

Measurement-induced entanglement of two transmon qubits by a single photon

open access: yesNew Journal of Physics, 2017
On-demand creation of entanglement between distant qubits is a necessary ingredient for distributed quantum computation. We propose an entanglement scheme that allows for single-shot deterministic entanglement creation by detecting a single photon ...
Christoph Ohm, Fabian Hassler
doaj   +1 more source

Entangling superconducting qubits in a multi-cavity system

open access: yesNew Journal of Physics, 2016
Important tasks in cavity quantum electrodynamics include the generation and control of quantum states of spatially separated particles distributed in different cavities.
Chui-Ping Yang   +3 more
doaj   +1 more source

Optimal control theory for a unitary operation under dissipative evolution

open access: yesNew Journal of Physics, 2014
We show that optimizing a quantum gate for an open quantum system requires the time evolution of only three states irrespective of the dimension of Hilbert space. This represents a significant reduction in computational resources compared to the complete
Michael H Goerz   +2 more
doaj   +1 more source

Entanglement and asymmetric steering over two octaves of frequency difference with cascaded harmonic generation [PDF]

open access: yes, 2017
We analyse a nonlinear optical system which uses cascaded nonlinearities to produce both second and fourth harmonic outputs from an input field at the fundamental frequency.
Olsen, M. K
core   +2 more sources

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