Entanglement dynamics for uniformly accelerated two-level atoms coupled with electromagnetic vacuum fluctuations
arXiv:1609.06820 · doi:10.1103/PhysRevA.94.032337
Abstract
We investigate the entanglement dynamics of two uniformly accelerated atoms with the same acceleration perpendicular to their separation. The two-atom system is treated as an open system coupled with fluctuating electromagnetic fields in the Minkowski vacuum, and in the Born-Markov approximation the master equation that describes the completely positive time evolution of the two-atom system is derived. In particular, we investigate the phenomena of entanglement degradation, generation, revival and enhancement. As opposed to the scalar-field case, the entanglement dynamics is crucially dependent on the polarization directions of the atoms. For the two-atom system with certain acceleration and separation, the polarization directions of the atoms may determine whether entanglement generation, revival or enhancement happens, while for entanglement degradation, they affect the decay rate of entanglement. A comparison between the entanglement evolution of accelerated atoms and that of static ones immersed in a thermal bath at the Unruh temperature shows that they are the same only when the acceleration is extremely small.
22 pages, 12 figures, published version
References in corpus (13)
- Finite-Time Disentanglement via Spontaneous Emission
- Dark periods and revivals of entanglement in a two qubit system
- Delayed (sudden) birth of entanglement
- Entanglement dynamics for uniformly accelerated two-level atoms
- Spontaneous excitation of an accelerated hydrogen atom coupled with electromagnetic vacuum fluctuations
- Spontaneous absorption of an accelerated hydrogen atom near a conducting plane in vacuum
- Loss of Spin Entanglement For Accelerated Electrons in Electric and Magnetic Fields
- The Unruh effect and entanglement generation for accelerated atoms near a reflecting boundary
- Position dependent energy level shifts of an accelerated atom in the presence of a boundary
- On the physical meaning of the Unruh effect
- Entanglement of two qubits in a relativistic orbit
- Entanglement generation in atoms immersed in a thermal bath of external quantum scalar fields with a boundary
- Spontaneous excitation of a static multilevel atom coupled with electromagnetic vacuum fluctuations in Schwarzschild spacetime