Complete Physical Characterization of Quantum Nondemolition Measurements via Tomography
Authors: Pereira, L.; Garcia-Ripoll, J. J.; Ramos, And T. Journal: PHYSICAL REVIEW LETTERS Publication date: 2022/06/29 DOI: 10.1103/PhysRevLett.129.010402 Abstract: We introduce a self-consistent tomography for arbitrary quantum nondemolition (QND) detectors. Based on this, we build a complete physical characterization of the detector, including the measurement processes and a quantification of the fidelity, ideality, and backaction [...]