Journal
PHYSICAL REVIEW A
Volume 89, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.89.014303
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Funding
- National Natural Science Foundation of China [11374085, 10905024, 11274010, 11204061, 61073048]
- Key Project of the Chinese Ministry of Education [211080, 210092]
- Specialized Research Fund for the Doctoral Program of Higher Education [20113401110002]
- 211 Project of Anhui University
- personnel department of Anhui Province
- Key Program of the Education Department of Anhui Province [KJ2011A243]
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Two qubits in pure entangled states going through separate paths and interacting with their own individual environments will gradually lose their entanglement. Here we show that the entanglement change of a two-qubit state due to amplitude damping noises can be recovered by entanglement swapping. Some initial states can be asymptotically purified into maximally entangled states by iteratively using our protocol.
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