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Laser Physics

Restoration of entanglement transfer by environment-assisted measurement and quantum measurement reversal in two parallel Heisenberg spin chains

Yang Leng

Published Aug 20, 2024• 1 citation
Publisher

Abstract

Abstract The effect of environment-assisted measurement and quantum measurement reversal on the entanglement transfer in two parallel Heisenberg spin chains is investigated. We derive the exact analytical expression of the optimal final restoration, show that the distribution entanglement could be restored to the initial value, which is independent of the size of the spin chain. Comparing with the results obtained by the method of weak measurement, our results show notable superiorities on restoration scope and success probability.

DOI
10.1088/1555-6611/ad6d55

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Abstract Based on the quantum technique of environment-assisted measurement and reversal (EMR), we propose a scheme to restore the qutrit–qutrit entanglement from amplitude-phase damping decoherence. By solving the master equation, we get the exact analytical or numerical simulation expressions of the optimal final restoration, showing explicitly that the EMR does indeed restore the qutrit-qutrit entanglement to the original value. This sheds new light on the protection of high-dimensional quantum entanglement in a complex quantum environment.