Southwest Quantum Information and Technology

Efficient simulation of non-Markovian qubit trajectories

Presenting Author: Sacha Greenfield, Chapman University
Contributing Author(s): Shiva L. Barzili, Justin Dressel

Superconducting transmon qubits are measured by coupling them to a resonator and monitoring the leaked microwave field continuously in time. In the bad-cavity regime, we can treat the resonator as a steady-state bath that produces Markovian quantum trajectories of the qubit. However, when not at steady-state, such as during ring-up and ring-down transients of the resonator, this measurement process generally allows information to flow back from the resonator to the qubit, which causes non-Markovian dynamics at the level of the qubit. This more general situation has now become relevant for the experimental community, so we consider how to efficiently simulate such non-Markovian trajectories for comparison with experimental data.

(Session 5 : Saturday from 5:00pm - 7:00pm)