Characterizing Quantum Instruments: From Nondemolition Measurements to Quantum Error Correction
Roman Stricker, Davide Vodola, Alexander Erhard, Lukas Postler, M. Meth, Martin Ringbauer, Philipp Claudius Schindler, R. Blatt, Markus Michael Müller, Thomas Monz · PRX Quantum · 2022
A complete toolbox for the tomographic characterization of generic instruments is experimentally applied to detect qubit loss and leakage, offering in-depth information about the failure modes that degrade quantum error correction.