Sequential Bayesian experiment design for adaptive Ramsey sequence measurements
Abstract: The Ramsey sequence is a canonical example of a quantum phase measurement for a spin qubit. In Ramsey measurements, the measurement efficiency can be optimized through careful selection of settings for the phase accumulation time setting, τ. This paper implements a sequential Bayesian experiment design protocol in low-fidelity Ramsey measurements, and its performance is compared to a previously reported adaptive heuristic protocol, a quantum phase estimation algorithm, and random setting choices. A workflow allowing measurements and design calculations to run concurrently largely eliminates computation time from measurement overhead. When precession frequency is the lone parameter to estimate, the Bayesian design is faster by factors of roughly 2, 4, and 5 relative to the adaptive heuristic, random τ choices, and the quantum phase estimation algorithm, respectively. When four parameters are to be determined, Bayesian experiment design and random τ choices can converge to roughly equivalent sensitivity, but the Bayesian method converges four times faster.
Keywords: adaptive / optimized / Ramsey / quantum phase / converges / Bayesian experiment design
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Click here to see the statistics on "Journal of Applied Physics" .