Measurement-induced quantum entanglement recovery
arXiv:1010.1983 · doi:10.1103/PhysRevA.82.022324
Abstract
By using photon pairs created in parametric down conversion, we report on an experiment, which demonstrates that measurement can recover the quantum entanglement of two qubit system in a pure dephasing environment. The concurrence of the final state with and without measurement are compared and analyzed. Furthermore, we verify that recovered states can still violate Bell's inequality, that is, to say, such recovered states exhibit nonlocality. In the context of quantum entanglement, sudden death and rebirth provide clear evidence, which verifies that entanglement dynamics of the system is sensitive not only to its environment, but also on its initial state.
This is a new version. Some typos in the Physics Review A version have been corrected
References in corpus (17)
- Entanglement of Formation of an Arbitrary State of Two Qubits
- Decoherence, einselection, and the quantum origins of the classical
- Quantum Computing
- On the Measurement of Qubits
- Optical Quantum Computing
- Ultra-bright source of polarization-entangled photons
- Sudden Death of Entanglement
- Experimental entanglement of six photons in graph states
- Quantum Open System Theory: Bipartite Aspects
- Measures and dynamics of entangled states
- Experimental demonstration of photonic entanglement collapse and revival
- A Factorization Law for Entanglement Decay
- Complete disentanglement by partial pure dephasing
- Experimental characterization of entanglement dynamics in noisy channels
- Nonlocal Effects of Partial Measurements and Quantum Erasure
- Generation of time-bin entangled photons without temporal post-selection
- Measurement Induced Quantum Coherence Recovery