How to detect qubit-environment entanglement generated during qubit dephasing
How to detect qubit-environment entanglement generated during qubit dephasing
We propose a straightforward experimental protocol to test whether qubit-environment entanglement is generated during pure dephasing of a qubit. The protocol is implemented using only measurements and operations on the qubit---it does not involve the measurement of the system-environment state of interest, but the preparation and measurement of the qubit …