Adaptive rotating-wave approximation for driven open quantum systems
- Northwestern Univ., Evanston, IL (United States)
- Northwestern Univ., Evanston, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Univ. of Chicago, Chicago, IL (United States)
In this study we present a numerical method to approximate the long-time asymptotic solution $$\rho_\infty(t)$$ to the Lindblad master equation for an open quantum system under the influence of an external drive. The proposed scheme uses perturbation theory to rank individual drive terms according to their dynamical relevance, and adaptively determines an effective Hamiltonian. In the constructed rotating frame, $$\rho_\infty$$ is approximated by a time-independent, nonequilibrium steady-state. This steady-state can be computed with much better numerical efficiency than asymptotic long-time evolution of the system in the lab frame. We illustrate the use of this method by simulating recent transmission measurements of the heavy-fluxonium device, for which ordinary time-dependent simulations are severely challenging due to the presence of metastable states with lifetimes of the order of milliseconds.
- Research Organization:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Grant/Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1498555
- Report Number(s):
- arXiv:1808.01247; FERMILAB-PUB-18-754-CD; PLRAAN; 1722213
- Journal Information:
- Physical Review A, Vol. 98, Issue 5; ISSN 2469-9926
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Observation and stabilization of photonic Fock states in a hot radio-frequency resonator
|
journal | March 2019 |
Observation and stabilization of photonic Fock states in a hot radio-frequency resonator | text | January 2019 |
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