Measuring the Winding Number in a Large-Scale Chiral Quantum Walk
Measuring the Winding Number in a Large-Scale Chiral Quantum Walk
We report the experimental measurement of the winding number in an unitary chiral quantum walk. Fundamentally, the spin-orbit coupling in discrete time quantum walks is implemented via birefringent crystal collinearly cut based on time-multiplexing scheme. Our protocol is compact and avoids extra loss, making it suitable for realizing genuine single-photon …