On admissible memory kernels for random unitary qubit evolution

On admissible memory kernels for random unitary qubit evolution

We analyze random unitary evolution of the qubit within memory kernel approach. We provide sufficient conditions which guarantee that the corresponding memory kernel generates physically legitimate quantum evolution. Interestingly, we are able to recover several well known examples and generate new...

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Veröffentlicht in:arXiv.org 2015-04
Hauptverfasser: Wudarski, Filip A, Należyty, Paweł, Sarbicki, Gniewomir, Chruściński, Dariusz
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Evolution
Kernels
Physics - Quantum Physics
Quantum theory
Qubits (quantum computing)
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creator Wudarski, Filip A
Należyty, Paweł
Sarbicki, Gniewomir
Chruściński, Dariusz
description We analyze random unitary evolution of the qubit within memory kernel approach. We provide sufficient conditions which guarantee that the corresponding memory kernel generates physically legitimate quantum evolution. Interestingly, we are able to recover several well known examples and generate new classes of nontrivial qubit evolution. Surprisingly, it turns out that quantum evolution with memory kernel generated by our approach gives rise to vanishing non-Markovianity measure based on the distinguishability of quantum states.
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subjects Evolution
Kernels
Physics - Quantum Physics
Quantum theory
Qubits (quantum computing)
title On admissible memory kernels for random unitary qubit evolution
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