Quantum optical reset with classical memory

Abstract: Dynamic quantum circuits generate states that depend on the measurement results obtained during circuit execution. To date such a quantum computing model has mainly been implemented with qubit-based superconducting hardware utilizing reset operations and classical logic. Here we develop a model of optical reset by using time-bin self-looped interferometers demonstrated in recent experiments. Synchronizing the optical reset with a simple classical device storing history of measurement results allows one to decrease uncertainty of future measurements, which suggests unprecedented flexibility in constructing dynamical circuits on optical platforms. We reveal and characterize information flow in the proposed reset model with distinct information-theoretic measures.