Entanglement dynamics in random media
arXiv:1709.08702 · doi:10.1103/PhysRevA.96.062119
Abstract
We study how the entanglement dynamics between two-level atoms is impacted by random fluctuations of the light cone. In our model the two-atom system is envisaged as an open system coupled with an electromagnetic field in the vacuum state. We employ the quantum master equation in the Born-Markov approximation in order to describe the completely positive time evolution of the atomic system. We restrict our investigations to the situation in which the atoms are coupled individually to two spatially separated cavities, one of which displaying the emergence of light-cone fluctuations. In such a disordered cavity, we assume that the coefficients of the Klein-Gordon equation are random functions of the spatial coordinates. The disordered medium is modeled by a centered, stationary and Gaussian process. We demonstrate that disorder has the effect of slowing down the entanglement decay. We conjecture that in a strong disorder environment the mean life of entangled states can be enhanced in such a way as to almost completely suppress quantum nonlocal decoherence.
Accepted for publication in Physical Review A
References in corpus (37)
- Entanglement of Formation of an Arbitrary State of Two Qubits
- Mixed State Entanglement and Quantum Error Correction
- Entanglement of a Pair of Quantum Bits
- Finite-Time Disentanglement via Spontaneous Emission
- Many-body localization in a disordered quantum Ising chain
- Anderson localization of entangled photons in an integrated quantum walk
- Entangled states and collective nonclassical effects in two-atom systems
- Environment Induced Entanglement in Markovian Dissipative Dynamics
- Entanglement entropy of random quantum critical points in one dimension
- Robust creation of entanglement between ions in spatially separate cavities
- Dicke quantum spin glass of atoms and photons
- Frustration and glassiness in spin models with cavity-mediated interactions
- Open Quantum Dynamics: Complete Positivity and Entanglement
- Disorder-Induced Entanglement in Spin Ice Pyrochlores
- Gravitons and Lightcone Fluctuations
- Entangled Bloch Spheres: Bloch Matrix and Two Qubit State Space
- Cosmological and Black Hole Horizon Fluctuations
- Entanglement dynamics in chains of qubits with noise and disorder
- Gravitons and Lightcone Fluctuations II: Correlation Functions
- Radiative processes of uniformly accelerated entangled atoms
- Boundary effects on radiative processes of two entangled atoms
- Dicke simulators with emergent collective quantum computational abilities
- Vacuum fluctuations and radiation reaction in radiative processes of entangled states
- Analog model for quantum gravity effects: phonons in random fluids
- Radiative processes of two entangled atoms outside a Schwarzschild black hole
- Entanglement dynamics for uniformly accelerated two-level atoms coupled with electromagnetic vacuum fluctuations
- Quantum Lightcone Fluctuations in Compactified Spacetimes
- Decoherence-free creation of atom-atom entanglement in cavity via fractional adiabatic passage
- Quantum Entanglement Initiated Super Raman Scattering
- Thermal Radiation from a Fluctuating Event Horizon
- Replica Symmetry Breaking in Cold Atoms and Spin Glasses
- An Analog Model for Quantum Lightcone Fluctuations in Nonlinear Optics
- Multipartite entanglement generation and fidelity decay in disordered qubit systems
- Accelerated detectors in Dirac vacuum: the effects of horizon fluctuations
- The Distributional Zeta-Function in Disordered Field Theory
- Scalar Quantum Field Theory in Disordered Media
- Spontaneous symmetry breaking in replica field theory
Cited by in corpus (11)
- Hot Accelerated Qubits: Decoherence, Thermalization, Secular Growth and Reliable Late-time Predictions
- Radiative process of two entangled uniformly accelerated atoms in a thermal bath: a possible case of anti-Unruh event
- Role of thermal field in entanglement harvesting between two accelerated Unruh-DeWitt detectors
- Hot Cosmic Qubits: Late-Time de Sitter Evolution and Critical Slowing Down
- Entanglement harvesting from conformal vacuums between two Unruh-DeWitt detectors moving along null paths
- Entanglement harvesting between two inertial Unruh-DeWitt detectors from non-vacuum quantum fluctuations
- Entanglement dynamics in a Kerr spacetime
- Asymptotic States of Accelerated Qubits with Nonzero Background Temperature
- Entanglement dynamics: Generalized master equation for uniformly accelerated two-level systems
- Entanglement dynamics governed by time-dependent quantum generators
- A dynamic theory of entanglement for uniformly accelerated atoms