TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.13.6.121
TI  - Optimal control for Hamiltonian parameter estimation in non-commuting and bipartite quantum dynamics
PY  - 2022/12/08
UR  - https://www.scipost.org/SciPostPhys.13.6.121
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 13
IS  - 6
SP  - 121
A1  - Qin, Shushen
AU  - Cramer, Marcus
AU  - Koch, Christiane
AU  - Serafini, Alessio
AB  - The ability to characterise a Hamiltonian with high precision is crucial for the implementation of quantum technologies. In addition to the well-developed approaches utilising optimal probe states and optimal measurements, the method of optimal control can be used to identify time-dependent pulses applied to the system to achieve higher precision in the estimation of Hamiltonian parameters, especially in the presence of noise. Here, we extend optimally controlled estimation schemes for single qubits to non-commuting dynamics as well as two interacting qubits, demonstrating improvements in terms of maximal precision, time-stability, as well as robustness over uncontrolled protocols.
ER  -

@Article{10.21468/SciPostPhys.13.6.121,
	title={{Optimal control for Hamiltonian parameter estimation in non-commuting and bipartite quantum dynamics}},
	author={Shushen Qin and Marcus Cramer and Christiane P. Koch and Alessio Serafini},
	journal={SciPost Phys.},
	volume={13},
	pages={121},
	year={2022},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.13.6.121},
	url={https://scipost.org/10.21468/SciPostPhys.13.6.121},
}