Decoherence and multipartite entanglement of non-inertial observers
arXiv:1301.2765 · doi:10.1088/0256-307X/29/2/020302
Abstract
Decoherence effect on multipartite entanglement in non-inertial frames is investigated. GHZ state is considered to be shared between the partners with one partner in inertial frame whereas the other two in accelerated frames. One-tangle and π-tangles are used to quantify the entanglement of the multipartite system influenced by phase damping and phase flip channels. It is seen that for phase damping channel, entanglement sudden death (ESD) occurs for p>0.5 in the infinite acceleration limit. On the other hand, in case of phase flip channel, ESD behaviour happens around 50% decoherence. It is also seen that entanglement sudden birth (ESB) does occur in case of phase flip channel. Furthermore, it is seen that effect of environment on multipartite entanglement is much stronger than that of the acceleration of non-inertial frames.
11 pages, 3 .eps figures, Slightly updated to published version in CPL, typos corrected, updated references
References in corpus (10)
- Quantum Open System Theory: Bipartite Aspects
- Entanglement of Dirac fields in non-inertial frames
- Sudden Death of Entanglement of Two Jaynes-Cummings Atoms
- Optimal quantum estimation of the Unruh-Hawking effect
- Degradation of non-maximal entanglement of scalar and Dirac fields in non-inertial frames
- Fermionic entanglement that survives a black hole
- Quantum Connectivity of Space-Time and Gravitationally Induced Decorrelation of Entanglement
- Loss of Spin Entanglement For Accelerated Electrons in Electric and Magnetic Fields
- Local-dephasing-induced entanglement sudden death in two-component finite-dimensional systems
- Multiparty quantum cryptographic protocol