Effects of decoherence and errors on Bell-inequality violation
arXiv:0804.4167 · doi:10.1007/s11128-011-0242-1
Abstract
We study optimal conditions for violation of the Clauser-Horne-Shimony-Holt form of the Bell inequality in the presence of decoherence and measurement errors. We obtain all detector configurations providing the maximal Bell inequality violation for a general (pure or mixed) state. We consider local decoherence which includes energy relaxation at the zero temperature and arbitrary dephasing. Conditions for the maximal Bell-inequality violation in the presence of decoherence are analyzed both analytically and numerically for the general case and for a number of important special cases. Combined effects of measurement errors and decoherence are also discussed.
18 pages, 5 figures
References in corpus (13)
- Finite-Time Disentanglement via Spontaneous Emission
- Quantum Open System Theory: Bipartite Aspects
- Bell inequality violation with two remote atomic qubits
- Production and detection of entangled electron-hole pairs in a degenerate electron gas
- Direct measurement of finite-time disentanglement induced by a reservoir
- Parity meter for charge qubits: an efficient quantum entangler
- Local aspects of disentanglement induced by spontaneous emission
- Experimental quantum key distribution based on a Bell test
- Bell inequality violation versus entanglement in presence of local decoherence
- Theory of measurement crosstalk in superconducting phase qubits
- Generic tripartite Bell nonlocality sudden death under local phase noise
- Analysis of Bell inequality violation in superconducting qubits
- Dephasing of entangled electron-hole pairs in a degenerate electron gas