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quant-ph2026
Signatures of quantum noise in the operation of Deutsch's algorithm
Małgorzata Strzałka, Katarzyna Roszak
We use Deutsch's algorithm as a stand in for more complex quantum algorithms in order to determine how quantum properties of an environment manifest themselves in results that can…
quant-ph2025
Entanglement with a mode observable via a tunable interaction with a qubit
Małgorzata Strzałka, Radim Filip, Katarzyna Roszak
We study the possibility of detection of ``spin-boson'' entanglement by qubit only measurements. Such entanglement is impossible to detect by previously proposed schemes that invol…
quant-ph2023
Qubit-environment entanglement in time-dependent pure dephasing
Małgorzata Strzałka, Radim Filip, Katarzyna Roszak
We show that the methods for quantification of system-environment entanglement that were recently developed for interactions that lead to pure decoherence of the system can be stra…