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- Title
Quantum State Recovery Via Environment-assisted Measurement and Weak Measurement.
- Authors
Harraz, Sajede; Cong, Shuang; Nieto, Juan J.
- Abstract
In this paper, we propose a quantum state recovery scheme based on environment assisted measurement with weak measurements and flip operations. Before the decoherence channel the weak measurement and flip operators are applied to gain some information about the state of the system and transfer it to a more robust state. Then we utilize environment assisted measurement and post-flip operations to bring the system as close as possible to its initial state. We illustrate our scheme and compare it with a scheme based on environment assisted measurement and weak measurement reversal in the case of a decoherence channel. We show that the success probability of our proposed scheme is significantly improved for all initial states. The proposed scheme is applicable for recovery of N-qubit state from any type of decoherence with at least one invertible Kraus operator. Also, the explicit formula of total fidelity and success probability for recovery of N-qubit GHZ state are derived.
- Publication
International Journal of Theoretical Physics, 2022, Vol 61, Issue 5, p1
- ISSN
0020-7748
- Publication type
Article
- DOI
10.1007/s10773-022-05055-4