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Abstract <p>We propose a protocol for restoring states transferred along a spin-1/2 chain utilizing a controlled interaction of the spin-chain with the environment. Such interaction exploits an incoherent quantum control and is described by the master equation with Lindblad operators having time-dependent pulse-sequence form. The amplitudes of the pulses are properly adjusted to perform the state restoring. We apply this protocol to restore the 1-order coherence matrix of the (0,1)-excitation of a 2-qubit state transferred along the spin-1/2 chain governed by the XXZ-Hamiltonian preserving the excitation number in the system.</p>

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Quantum Coherence Restoring in Communication Line via Strong Pulse-Form Interaction with Environment

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • E. B. Fel’dman,
  • I. D. Lazarev,
  • A. N. Pechen,
  • A. I. Zenchuk

摘要

Abstract

We propose a protocol for restoring states transferred along a spin-1/2 chain utilizing a controlled interaction of the spin-chain with the environment. Such interaction exploits an incoherent quantum control and is described by the master equation with Lindblad operators having time-dependent pulse-sequence form. The amplitudes of the pulses are properly adjusted to perform the state restoring. We apply this protocol to restore the 1-order coherence matrix of the (0,1)-excitation of a 2-qubit state transferred along the spin-1/2 chain governed by the XXZ-Hamiltonian preserving the excitation number in the system.