Tunable non-Markovian dynamics in a collision model: an application to coherent transport

• URL: http://arxiv.org/abs/2405.10685v2
• Date: Sat, 24 Aug 2024 09:15:55 GMT
• Title: Tunable non-Markovian dynamics in a collision model: an application to coherent transport
• Authors: Simone Rijavec, Giuseppe Di Pietra,
• Abstract summary: We propose a collision model to investigate the information dynamics of a system coupled to an environment with varying degrees of non-Markovianity. We control the degree of non-Markovianity by applying a depolarising channel to a fixed and rigid reservoir of qubits. We show how the system-environment coupling strength and the degree of non-Markovianity affect the process.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We propose a collision model to investigate the information dynamics of a system coupled to an environment with varying degrees of non-Markovianity. We control the degree of non-Markovianity by applying a depolarising channel to a fixed and rigid reservoir of qubits. We characterise the effect of the depolarising channel and apply the model to study the coherent transport of an excitation on a chain of three interacting qubits. We show how the system-environment coupling strength and the degree of non-Markovianity affect the process. Interestingly, in some cases a Markovian environment is preferable to enhance the coherent transport of the excitation.

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