Special Seminar featuring Chiao-Hsuan Wang, University of Chicago
Optical and microwave photonics are promising resources for quantum information processing and quantum simulation. Engineering suitable matter-light interactions to control and maintain quantum coherence in the presence of noise lies at the heart of practical quantum computing in such systems. I will first present a Hamiltonian engineering scheme for a photonic cavity using an ancilla qubit. The engineered Hamiltonian admits various applications including canceling unwanted Kerr effect, creating higher-order nonlinearities between photons, designing quantum gate operations resilient to noise, and even realizing quantum error correction. I will also demonstrate dissipation engineering approaches in the context of quantum simulation with light. Built upon the general concept of generating an effective chemical potential by parametric coupling with a dissipative reservoir, our approaches not only provide tunable parameters in performing quantum simulation but also enable preparation of near-equilibrium photonic states of interest. Moreover, the engineered chemical potential allows an analogous voltage bias for photonic circuit elements. Our work paves the way for near-term applications of noisy quantum devices as well as long-term fault-tolerant quantum computations
Coffee and tea to be served at 2:00 pm.
200 University Avenue West
Waterloo, ON N2L 3G1