Exploring Non-Markovian Dynamics in Quantum Transport

Recent research by Simone Rijavec and Giuseppe Di Pietra, titled "Tunable non-Markovian dynamics in a collision model: an application to coherent transport," explores the dynamics of quantum systems interacting with environments of varying non-Markovianity. The study introduces a collision model that allows for the manipulation of non-Markovian effects through the application of a depolarizing channel to a reservoir of qubits. This approach enables the researchers to characterize how the coupling strength between the system and its environment influences the coherent transport of excitations across a chain of three interacting qubits.

The findings indicate that the degree of non-Markovianity can significantly impact the transport process. Notably, the research reveals that in certain scenarios, a Markovian environment may enhance the coherent transport of excitations, suggesting that the traditional view of non-Markovianity as always beneficial may need reevaluation. This insight could have implications for the design of quantum systems and their interactions with environments, potentially influencing future developments in quantum computing and information processing.

The full paper can be accessed at arXiv:2405.10685.