Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session A75: Superconducting qubit circuit theory
8:00 AM–10:48 AM,
Monday, March 6, 2023
Room: Room 401/402
Sponsoring
Unit:
DQI
Chair: Adrian Parra Rodriguez, Université de Sherbrooke
Abstract: A75.00002 : Generalized time-coarse graining as a systematic perturbation theory beyond RWA I: An introduction and computational framework*
8:36 AM–8:48 AM
Presenter:
Leon Y Bello
(Princeton University)
Authors:
Leon Y Bello
(Princeton University)
Wentao Fan
(Princeton University)
Aditya Gadontra
(Princeton University)
Hakan E Tureci
(Princeton University)
Here, we implement a generalized time-coarse graining (TCG) approach developed in our group. Our method goes beyond first-order rotating-wave approximation and generalizes it to higher-order processes, at the cost of a more complicated, non-unitary evolution. The TCG calculations are very involved, with the number of terms proliferating with the order of truncation, quickly becoming unmanageable by hand. To address this problem, we developed QuantumGraining.jl – a Julia package for symbolic calculation of the TCG dynamics. The package automates the TCG process, and provides a symbolic representation of the Hamiltonian and effective dissipators up to the required order of truncation. The package integrates with other software packages to efficiently and conveniently solve the effective master equations.
*This work is supported by the ARO, the DOE via the C2QA collaboration, and the AFOSR.
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