Entangled states dynamics of moving two-level atoms in a thermal field bath
arXiv:2303.10618 · doi:10.1088/1751-8121/ad4caa
Abstract
We consider a two-level atom that follows a wordline of constant velocity, while interacting with a massless scalar field in a thermal state through: (i) an Unruh-DeWitt coupling, and (ii) a coupling that involves the time derivative of the field. We treat the atom as an open quantum system, with the field playing the role of the environment, and employ a master equation to describe its time evolution. We study the dynamics of entanglement between the moving atom and a (auxiliary) qubit at rest and isolated from the thermal field. We find that in the case of the standard Unruh-DeWitt coupling and for high temperatures of the environment the decay of entanglement is delayed due to the atom's motion. Instead, in the derivative coupling case, the atom's motion always causes the rapid death of entanglement.
arXiv comment7 pages, 1 figure
References in corpus (45)
- Quantum entanglement
- Quantum Cryptography
- Entanglement of Formation of an Arbitrary State of Two Qubits
- Experimental quantum teleportation
- Entanglement of a Pair of Quantum Bits
- Decoherence Free Subspaces for Quantum Computation
- Dynamical Decoupling of Open Quantum Systems
- Quantum discord for two-qubit X-states
- On the role of entanglement in quantum computational speed-up
- Protecting entanglement via the quantum Zeno effect
- Unification of Dynamical Decoupling and the Quantum Zeno Effect
- Teleportation with a uniformly accelerated partner
- Entanglement from the vacuum
- Quantum Entanglement of Moving Bodies
- Violating Bell's inequalities in the vacuum
- Open-System Dynamics of Entanglement
- Acceleration-assisted entanglement harvesting and rangefinding
- How often does the Unruh-DeWitt detector click? Regularisation by a spatial profile
- Considerations on the Unruh Effect: Causality and Regularization
- Quantum Measurement Information as a key to Energy Release from Local Vacuums
- Teleportation in a non-inertial frame
- Sudden death of entanglement and teleportation fidelity loss via the Unruh effect
- Relativistic Quantum Information in Detectors-Field Interactions
- The Rotating-Wave Approximation: Consistency and Applicability from an Open Quantum System Analysis
- The relativistic quantum channel of communication through field quanta
- Onset and decay of the 1+1 Hawking-Unruh effect: what the derivative-coupling detector saw
- Harvesting correlations from thermal and squeezed coherent states
- Loss of Spin Entanglement For Accelerated Electrons in Electric and Magnetic Fields
- Nonperturbative approach to relativistic quantum communication channels
- Entanglement harvesting for Unruh-DeWitt detectors in circular motion
- Non-Markovian time evolution of an accelerated qubit
- Does acceleration assist entanglement harvesting?
- Communication through quantum fields near a black hole
- Dynamics and quantum entanglement of two-level atoms in de Sitter spacetime
- Channel capacity of relativistic quantum communication with rapid interaction
- Thermal Green Functions in Coordinate Space for Massless Particles of any Spin
- Fully Relativistic Entanglement Harvesting
- Quantum Signaling in Relativistic Motion and Across Acceleration Horizons
- Asymptotic states for stationary Unruh-DeWitt detectors
- Relativistic Quantum Thermodynamics of Moving Systems
- Entanglement harvesting between two inertial Unruh-DeWitt detectors from non-vacuum quantum fluctuations
- Relativistic quantum communication between harmonic oscillator detectors
- Asymptotic states of accelerated detectors and universality of the Unruh effect
- Field assisted extraction and swelling of quantum coherence for moving Unruh-DeWitt detectors
- Assisted harvesting and catalysis of coherence from scalar fields