Results 51 to 60 of about 86,028 (215)

Non-Markovianity in High-Dimensional Open Quantum Systems using Next-generation Multicore Optical Fibers [PDF]

open access: yesQuantum
With the advent of quantum technology, the interest in communication tasks assisted by quantum systems has increased both in academia and industry. Nonetheless, the transmission of a quantum state in real-world scenarios is bounded by environmental noise,
Santiago Rojas-Rojas   +7 more
doaj   +1 more source

Advances in Sequential Measurement and Control of Open Quantum Systems

open access: yesProceedings, 2019
Novel concepts, perspectives and challenges in measuring and controlling an open quantum system via sequential schemes are shown. We discuss how similar protocols, relying both on repeated quantum measurements and dynamical decoupling control pulses, can
Stefano Gherardini   +3 more
doaj   +1 more source

Effective temperature pulses in open quantum systems

open access: yesPhysical Review Research, 2022
Controlling the temperature of nanoscale quantum systems is becoming increasingly important in the efforts to develop thermal devices such as quantum heat valves, heat engines, and refrigerators and to explore fundamental concepts in quantum ...
Pedro Portugal   +2 more
doaj   +1 more source

Thermodynamic length in open quantum systems [PDF]

open access: yesQuantum, 2019
The dissipation generated during a quasistatic thermodynamic process can be characterised by introducing a metric on the space of Gibbs states, in such a way that minimally-dissipating protocols correspond to geodesic trajectories. Here, we show how to generalize this approach to open quantum systems by finding the thermodynamic metric associated to a ...
Scandi, Matteo, Perarnau-Llobet, Martí
openaire   +6 more sources

Zeno dynamics in quantum open systems [PDF]

open access: yesScientific Reports, 2015
AbstractQuantum Zeno effect shows that frequent observations can slow down or even stop the unitary time evolution of an unstable quantum system. This effect can also be regarded as a physical consequence of the statistical indistinguishability of neighboring quantum states. The accessibility of quantum Zeno dynamics under unitary time evolution can be
Yu-Ran Zhang, Heng Fan
openaire   +5 more sources

Bound on the distance between controlled quantum state and target state under decoherence

open access: yesJournal of Physics Communications
To implement quantum information technologies, carefully designed control for preparing a desired state plays a key role. However, in realistic situation, the actual performance of those methodologies is severely limited by decoherence.
Kohei Kobayashi
doaj   +1 more source

Realization of controllable open system with NMR

open access: yesNew Journal of Physics, 2019
An open quantum system is now attracting much attention because a quantum device such as quantum computers and quantum sensors is an emerging technology. Here, we present a model of the open system that shows either time-homogeneous Markovian relaxations
Le Bin Ho   +3 more
doaj   +1 more source

Bottomonium suppression in an open quantum system using the quantum trajectories method

open access: yesJournal of High Energy Physics, 2021
We solve the Lindblad equation describing the Brownian motion of a Coulombic heavy quark-antiquark pair in a strongly coupled quark-gluon plasma using the highly efficient Monte Carlo wave-function method.
Nora Brambilla   +5 more
doaj   +1 more source

Capturing non-Markovian dynamics on near-term quantum computers

open access: yesPhysical Review Research, 2021
With the rapid progress in quantum hardware, there has been an increased interest in new quantum algorithms to describe complex many-body systems searching for the still-elusive goal of “useful quantum advantage.” Surprisingly, quantum algorithms for the
Kade Head-Marsden   +3 more
doaj   +1 more source

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