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

Journal article

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 information on a chain of three interacting qubits. We show how the system-environment coupling probability and the degree of non-Markovianity affect the process. Interestingly, in some cases a Markovian environment is preferable to reduce information loss and enhance the coherent transport.

Authors: Rijavec, S; Di Pietra, G

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: IOP Publishing
• Journal: New Journal of Physics
• Volume: 27
• Issue: 4
• Article number: 043003
• Publication date: 2025-04-02
• Acceptance date: 2025-03-20
• DOI: 10.1088/1367-2630/adc32b
• EISSN: 1367-2630
• Language: English
• Keywords: collision model; coherent transport; open quantum systems; non-Markovianity