Semi-device-dependent quantum device characterization

by Ingo Roth (Technology Innovation Institute, Abu Dhabi)

Tuesday 10 Sept 2024, 13:00 → 14:00 Europe/Berlin

Precise control over complex quantum systems on scales out of the reach of classical simulations hold promises for many scientific and technological applications. With the advent of these novel technologies comes the necessity for characterizing their functioning. The precise understanding of the inner-working of quantum devices is a particularly daunting task in the interesting regime of high complexity, easily exhausting time and memory of classical computers in the pre- and post-processing. In addition, inaccuracy in the implementation of the measurement apparatus reduces the achievable precision of characterization protocols.  We give an overview of multiple new results on semi-device-dependent quantum system characterization protocols.  These protocols robustly estimate the accuracy of a quantum device in preparing a quantum state, implementing a quantum process or being governed by a specific Hamiltonian time-evolution.