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LIMITATIONS ON QUANTUM CONTROL [PDF]

open access: yesInternational Journal of Modern Physics B, 2002
In this note we give an introduction to the topic of Quantum Control, explaining what its objectives are, and describing some of its limitations.
Solomon, Allan I., Schirmer, Sonia G.
openaire   +2 more sources

Quantum boomerang effect of light

open access: yesNature Communications
The quantum boomerang effect is a counterintuitive phenomenon in which a wave packet launched with finite momentum in a disordered medium returns to its origin.
Xiangrui Hou   +5 more
doaj   +1 more source

Electromagnetic emissions from near-horizon region of an extreme Kerr-Taub-NUT black hole

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
We have studied electromagnetic line emissions from near-horizon region in the extremal Kerr-Taub-NUT black hole spacetime and then probe the effects of NUT charge on the electromagnetic line emissions.
Fen Long   +3 more
doaj   +1 more source

Feedback control in quantum optics: an overview of experimental breakthroughs and areas of application

open access: yes, 2012
We present a broad summary of research involving the application of quantum feedback control techniques to optical set-ups, from the early enhancement of optical amplitude squeezing to the recent stabilisation of photon number states in a microwave ...
Serafini, Alessio
core   +1 more source

Quantum optimal control theory [PDF]

open access: yesJournal of Physics B: Atomic, Molecular and Optical Physics, 2007
The control of quantum dynamics via specially tailored laser pulses is a long-standing goal in physics and chemistry. Partly, this dream has come true, as sophisticated pulse shaping experiments allow to coherently control product ratios of chemical reactions. The theoretical design of the laser pulse to transfer an initial state to a given final state
Werschnik, J., Gross, E. K. U.
openaire   +2 more sources

Gate-set evaluation metrics for closed-loop optimal control on nitrogen-vacancy center ensembles in diamond

open access: yesnpj Quantum Information
A recurring challenge in quantum science and technology is the precise control of their underlying dynamics that lead to the desired quantum operations, often described by a set of quantum gates. These gates can be subject to application-specific errors,
Philipp J. Vetter   +6 more
doaj   +1 more source

Refractive index in generalized superconductors with Born–Infeld electrodynamics

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
We investigate, in the probe limit, the negative refraction in the generalized superconductors with the Born–Infeld electrodynamics. We observe that the system has a negative Depine–Lakhtakia index in the superconducting phase at small frequencies and ...
Jun Cheng   +3 more
doaj   +1 more source

Sampling-based Learning Control for Quantum Systems with Uncertainties

open access: yes, 2015
Robust control design for quantum systems has been recognized as a key task in the development of practical quantum technology. In this paper, we present a systematic numerical methodology of sampling-based learning control (SLC) for control design of ...
Chen, Chunlin   +5 more
core   +1 more source

Quantum Physics Under Control

open access: yesPhysics Today, 2003
Thanks to the increasing ability to coherently control quantum systems, designer Hamiltonians can be created to explore new physics and to yield a better understanding of complex phenomena.
Walmsley, I, Rabitz, E
openaire   +1 more source

A quantum controlled quantum eraser [PDF]

open access: yesPhysica Scripta, 2018
We show that the protocol known as quantum state separation can be used to transfer information between the phase and path of a particle in an interferometer. When applied to a quantum eraser, this allows us to erase some, but not all, of the path information. We can control how much path information we wish to erase.
János A Bergou, Mark Hillery
openaire   +2 more sources

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