Dynamical decoupling for engineered dissipative process

Engineered dissipation is an important technique to prepare quantum resources, such as spin-squeezed states, for quantum sensing and computing. Compared with traditional coherent approach, engineered dissipation is generally less demanding in control precision and more robust against noise. However, the efficiency dissipative spin squeezing can be affected by unwanted interaction. It would be highly desirable to remove the effects of unwanted interaction to boost the performance of dissipative spin squeezing. Dynamical decoupling (DD) provides a solution to address this problem. DD is a powerful quantum control technique to suppress the effect of unwanted coupling and has been used to increase the coherence times of qubits. In this research project, we will investigate how to apply DD to boost the performance of dissipative spin squeezing. The intern will conduct numerical simulations and theoretical investigation. The results would provide new dissipative spin squeezing schemes where the obstacle of unwanted interaction is removed by DD.

Faculty Supervisor:

Hoi-Kwan Lau

Student:

Partner:

South China Normal University

Discipline:

Physics

Sector:

Quantum Science; Information and Communications Technology; Nanotechnology

University:

Simon Fraser University

Program: