High-fidelity parametric beamsplitting with a parity-protected converter.

ABSTRACT: Fast, high-fidelity operations between microwave resonators are an important tool for bosonic quantum computation and simulation with superconducting circuits. An attractive approach for implementing these operations is to couple these resonators via a nonlinear converter and actuate parametric processes with RF drives. It can be challenging to make these processes simultaneously fast and high fidelity, since this requires introducing strong drives without activating parasitic processes or introducing additional decoherence channels. We show that in addition to a careful management of drive frequencies and the spectrum of environmental noise, leveraging the inbuilt symmetries of the converter Hamiltonian can suppress unwanted nonlinear interactions, preventing converter-induced decoherence

SUBMITTER: Lu Y 

PROVIDER: S-EPMC10507116 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature