Decoherence of one-dimensional flying qubits due to their cross-talk and imperfections

作者：Khveshchenko DV^*

来源：Physical Review B, 2004, 70(9): 092407.

DOI：10.1103/PhysRevB.70.092407

We study decoherence of propagating spin-1/2 excitations in generic (nonintegrable and/or disordered) spin chains. We find that the corresponding decoherence times become shorter in both the near-critical and diffusive regimes, a fact which has important implications for the recently proposed spin chain-based implementations of quantum information processing where such excitations can be utilized in the capacity of "all-spin" flying qubits.

• 出版日期2004-9