State transfer in Open Quantum Systems

Ballesteros Ferraz, Lorena (Supervisors Zambrini, Roberta; Giorgi, Gian Luca)
Master Thesis (2019)

This master thesis is focused on the study of quantum state transfer in open quantum systems. While the presence of losses generally damages the state transfer quality, it is important to find the conditions under which such degradation can be minimized. We analyze a chain of four spins in multiple scenarios, different types of baths, different coupling constants, and a wide range of oscillatory frequencies. Dissipation in general hinders the fidelity of the information transfer but some configurations are found to be more resilient. The time under which the transfer is maximum is also analyzed, being not strongly altered by dissipation when state transfer is successful. Preliminary results about spontaneous quantum synchronization are also presented.

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