Finite time decoherence could be suppressed efficiently in photonic crystal
arXiv:0805.2876 · doi:10.1103/PhysRevA.78.042320
Abstract
The decoherence of two initially entangled qubits in anisotropic band gap photonic crystal has been studied analytically without Born or Markovian approximation. It is shown that the decoherence dynamics of two qubits in photonic crystal is greatly different from that of two qubits in vacuum or subjected to usual non-Markovian reservoir. The results also show that the finite time decoherence invoked by spontaneous emission could be suppressed efficiently and the entanglement of the Bell state possesses odd parity is more easily preserved in photonic crystal than that of the Bell state possesses even parity under the same condition. A store scheme for entangled particle pair is proposed.
4 pages, 7 figures
References in corpus (12)
- Entanglement of Formation of an Arbitrary State of Two Qubits
- Quantum Mechanics helps in searching for a needle in a haystack
- Concentrating Partial Entanglement by Local Operations
- Finite-Time Disentanglement via Spontaneous Emission
- Non-Markovian effects on the dynamics of entanglement
- Quantum Open System Theory: Bipartite Aspects
- Stochastic wave function method for non-Markovian quantum master equations
- Direct measurement of finite-time disentanglement induced by a reservoir
- Non-Markovian Quantum Fluctuations and Superradiance Near a Photonic Band Edge
- Quantum Physics and Computers
- Quantum Communication with Correlated Nonclassical States
- Non-Markovian disentanglement dynamics of two-qubit system
Cited by in corpus (7)
- Quantum speedup in a memory environment
- Two-qubit entanglement dynamics for two different non-Markovian environments
- Dynamics of Non Classically Reproducible Entanglement
- Quantum Correlations Between Identical and Unidentical Atoms in a Dissipative Environment
- Effect of control procedures on the evolution of entanglement in open quantum systems
- Multiphoton resonances for all-optical quantum logic with multiple cavities
- Generation of entanglement density within a reservoir