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quant-ph2025
Sensing high-frequency ac fields via a two-qubit sensor
Rizwan Abbas, Ali Raza Mirza, Adam Zaman Chaudhry
Quantum sensors allow us to measure weak oscillating fields with incredible precision. One common approach is to use the time evolution of a single two-level system (or a qubit) in…
quant-ph2024
The effect of non-selective measurement on the parameter estimation within spin-spin model
Ali Raza Mirza, Jim Al-Khalili
We investigate the role of non-selective measurement on the estimation of system-environment parameters. Projective measurement is the popular method of initial state preparation w…
quant-ph2024
The role of initial system-environment correlations in the accuracies of parameters within spin-spin model
Ali Raza Mirza, Jim Al-Khalili
We investigate the effect of initial system-environment correlations to improve the estimation of environment parameters. By employing various physical situations of interest, we p…