Results 41 to 50 of about 718,181 (329)

Phase rigidity and avoided level crossings in the complex energy plane [PDF]

, 2006
We consider the effective Hamiltonian of an open quantum system, its biorthogonal eigenfunctions $\phi_\lambda$ and define the value $r_\lambda = (\phi_\lambda|\phi_\lambda)/$ that characterizes the phase rigidity of the eigenfunctions $\phi_\lambda$. In
Almas F. Sadreev, E. Persson, Evgeny N. Bulgakov, Ingrid Rotter, S. Datta, S. Rotter, V. I. Fal’ko   +6 more
core   +3 more sources

A cosmological open quantum system

, 2018
We derive the evolution equation for the density matrix of a UV- and IR- limited band of comoving momentum modes of the canonically normalized scalar degree of freedom in two examples of nearly de Sitter universes.
Agarwal, Nishant, Kamal, Archana, Shandera, Sarah   +2 more
core   +1 more source

Complete Characterization of a Quantum Process: the Two-Bit Quantum Gate [PDF]

, 1996
We show how to fully characterize a quantum process in an open quantum system. We particularize the procedure to the case of a universal two-qubit gate in a quantum computer.
A. Peres, C. H. Bennett, C. Monroe, J. F. Poyatos, J. I. Cirac, J. I. Cirac, P. Zoller, Q. A. Turchette, U. Leonhardt, W. K. Wootters   +9 more
core   +2 more sources

Open-system quantum error correction [PDF]

Physical Review A, 2018
v1: 11 pages.
Len, Yink Loong, Ng, Hui Khoon
openaire   +2 more sources

Quantum sensing using multiqubit quantum systems and the Pauli polytope

Physical Review Research, 2023
Quantum sensing has highly practical potential applications in fields ranging from fundamental physics and quantum communication to biophysics and bioengineering.
Irma Avdic, LeeAnn M. Sager-Smith, Indranil Ghosh, Olivia C. Wedig, Jacob S. Higgins, Gregory S. Engel, David A. Mazziotti   +6 more
doaj   +1 more source

Digital Simulation of Single Qubit Markovian Open Quantum Systems: A Tutorial

Quanta, 2023
One of the first proposals for the use of quantum computers was the simulation of quantum systems. Over the past three decades, great strides have been made in the development of algorithms for simulating closed quantum systems and the more complex open
Ian Joel David, Ilya Sinayskiy, Francesco Petruccione   +2 more
doaj   +1 more source

Thermodynamics and Fluctuation Theorems for a Strongly Coupled Open Quantum System: An Exactly Solvable Case

, 2009
We illustrate recent results concerning the validity of the work fluctuation theorem in open quantum systems [M. Campisi, P. Talkner, and P. H\"{a}nggi, Phys. Rev. Lett.
Crooks G E, Dittrich T, Feynman R P, Hänggi P, Hänggi P, Jarzynski C, Michele Campisi, Peter Hänggi, Peter Talkner, Planck M, Planck M, Talkner P, Talkner P, Tasaki H   +13 more
core   +2 more sources

Identifiability of open quantum systems [PDF]

Physical Review A, 2014
We provide a general framework for the identification of open quantum systems. By looking at the input-output behavior, we try to identify the system inside a black box in which some Markovian time-evolution takes place. Due to the generally irreversible nature of the dynamics, it is difficult to assure full controllability over the system.
Burgarth, Daniel, Yuasa, Kazuya
openaire   +2 more sources

Transitionless quantum driving in open quantum systems

New Journal of Physics, 2014
We extend the concept of superadiabatic dynamics, or transitionless quantum driving, to quantum open systems whose evolution is governed by a master equation in the Lindblad form.
G Vacanti, R Fazio, S Montangero, G M Palma, M Paternostro, V Vedral   +5 more
doaj   +1 more source

Simulation of open-quantum-system dynamics using the quantum Zeno effect

Physical Review Research, 2020
We suggest a quantum simulator that allows to study the role of memory effects in the dynamics of open quantum systems. A particular feature of our simulator is the ability to engineer both Markovian and non-Markovian dynamics by means of quantum ...
Sabrina Patsch, Sabrina Maniscalco, Christiane P. Koch   +2 more
doaj   +1 more source