Results 91 to 100 of about 8,735 (248)
Laser &Photonics Reviews, EarlyView.Introducing dynamical dephasing into the photon modes of a waveguide causes spontaneous emission to switch from conventional exponential decay to a robust power‐law behavior visible at short times. The power law arises from photon diffusion in a dynamically disordered environment, uncovering a previously unexplored, decoherence‐induced pathway to ...
Stefano Longhi
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Decoherence-Free Linear Quantum Subsystems [PDF]
IEEE Transactions on Automatic Control, 2014 This paper provides a general theory for characterizing and constructing a decoherence-free (DF) subsystem for an infinite dimensional linear open quantum system. The main idea is that, based on the Heisenberg picture of the dynamics rather than the commonly-taken Schrodinger picture, the notions of controllability and observability in control theory ...
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Faraday–Ramsey Rotation in Ultrathin Alkali Vapor Cells as an Analogy to Atomic‐Beam Systems
Laser &Photonics Reviews, EarlyView.This work demonstrates that ultrathin rubidium vapor cells can emulate atomic‐beam behavior through geometry‐dependent velocity filtering. Employing a spatially separated pump–probe scheme and Faraday–Ramsey rotation, the study reveals coherent atomic dynamics without buffer gas or anti‐relaxation coatings. This approach offers a compact pathway toward
Mark Dikopoltsev +4 more
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Physics Letters BPrevious studies have shown that the decoherence of environments generally negatively influences the quantum correlations in the Schwarzschild black hole.
Chun-yao Liu +2 more
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Pure Decoherence in Quantum Systems [PDF]
Open Systems & Information Dynamics, 2004 A popular model of decoherence based on the linear coupling to harmonic oscillator heat baths is analysed and shown to be inappropriate in the regime where decoherence dominates over energy dissipation, called pure decoherence regime. The similar mechanism essentially related to the energy conservation implies that, on the contrary to some recent ...
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Decoherence in Quantum Spin Systems [PDF]
, 2004 Computer simulations of decoherence in quantum spin systems require the solution of the time-dependent Schrodinger equation for interacting quantum spin systems over extended periods of time. We use exact diagonalization, Chebyshev polynomial technique, four Suzuki-formula algorithms, and the short-iterative-Lanczos method to solve a simple model for ...
De Raedt, H, Dobrovitski, VV
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Unveiling Hidden Features of Strongly Correlated Quantum Systems Through a Complex‐Network Analysis
Advanced Quantum Technologies, EarlyView.By applying complex network theory, we report a fundamental and previously unobserved phenomenon in the finite‐size Kitaev model: a singular point at which uniform, nonzero entanglement emerges among all fermion pairs, forming a complete entanglement network.
Guillem Llodrà +2 more
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A Coherence Preservation Control Strategy in Cavity QED Based on Classical Quantum Feedback
The Scientific World Journal, 2013 For eliminating the unexpected decoherence effect in cavity quantum electrodynamics (cavity QED), the transfer function of Rabi oscillation is derived theoretically using optical Bloch equations.
Ming Li, Wei Chen, Junli Gao
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Payoffs and Coherence of a Quantum Two-Player Game in a Thermal Environment
Entropy, 2015 A two-player quantum game is considered in the presence of a thermal decoherence modeled in terms of a rigorous Davies approach. It is shown how the energy dissipation and pure decoherence affect the payoffs of the players of the (quantum version) of ...
Jerzy Dajka +2 more
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Decoherence of quantum Markov semigroups [PDF]
Annales de l'Institut Henri Poincare (B) Probability and Statistics, 2005 This paper presents a probabilistic interpretation of decoherence based on the reduction of a quantum Markov semigroup \({\mathcal T}\) on an operator algebra \({\mathcal A}\) to a classical Markov semigroup on an abelian subalgebra of \({\mathcal A}\) which is \({\mathcal T}\)-invariant.
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