Qubit-environment Negativity versus Fidelity of conditional environmental states for an NV-center spin qubit interacting with a nuclear environment

Małgorzata Strzałka, Damian Kwiatkowski, Łukasz Cywiński +1

We study the evolution of qubit-environment entanglement, quantified using Negativity, for NV-center spin qubits interacting with an environment of ${}^{13}$C isotope partially polar…