Outputs (3)

Projected Least-Squares Quantum Process Tomography (2022)
Journal Article
Surawy-Stepney, T., Kahn, J., Kueng, R., & Guta, M. (in press). Projected Least-Squares Quantum Process Tomography. Quantum, 6, 844. https://doi.org/10.22331/q-2022-10-20-844

We propose and investigate a new method of quantum process tomography (QPT) which we call projected least squares (PLS). In short, PLS consists of first computing the least-squares estimator of the Choi matrix of an unknown channel, and subsequently... Read More about Projected Least-Squares Quantum Process Tomography.

Large deviations, central limit, and dynamical phase transitions in the atom maser (2022)
Journal Article
Girotti, F., Van Horssen, M., Carbone, R., & Guţa, M. (2022). Large deviations, central limit, and dynamical phase transitions in the atom maser. Journal of Mathematical Physics, 63(6), Article 062202. https://doi.org/10.1063/5.0078916

The theory of quantum jump trajectories provides a new framework for understanding dynamical phase transitions in open systems. A candidate for such transitions is the atom maser, which for certain parameters exhibits strong intermittency in the atom... Read More about Large deviations, central limit, and dynamical phase transitions in the atom maser.

Parameter estimation and system identification for continuously-observed quantum systems (2022)
Journal Article
Nurdin, H. I., & Guţǎ, M. (2022). Parameter estimation and system identification for continuously-observed quantum systems. Annual Reviews in Control, 54, 295-304. https://doi.org/10.1016/j.arcontrol.2022.04.012

This paper gives an overview of parameter estimation and system identification for quantum input–output systems by continuous observation of the output field. We present recent results on the quantum Fisher information of the output with respect to u... Read More about Parameter estimation and system identification for continuously-observed quantum systems.