3 papers
quant-ph2025
Photon-assisted entanglement creation by minimum-error generalized quantum measurements in the strong coupling regime
J. Z. Bernád, G. Alber
We explore possibilities of entangling two distant material qubits with the help of an optical radiation field in the regime of strong quantum electrodynamical coupling with almost…
quant-ph2024
Fisher-information-based estimation of optomechanical coupling strengths
Claudio Sanavio, József Zsolt Bernád, André Xuereb
The formalism of quantum estimation theory, focusing on the quantum and classical Fisher information, is applied to the estimation of the coupling strength in an optomechanical sys…
quant-ph2024
Optimal two-qubit gates in recurrence protocols of entanglement purification
Francesco Preti, Tommaso Calarco, Juan Mauricio Torres +1
We propose and investigate a method to optimize recurrence entanglement purification protocols. The approach is based on a numerical search in the whole set of SU(4) matrices with…