High-efficiency arbitrary quantum operation on a high-dimensional quantum system

Understand

The ability to manipulate quantum systems lies at the heart of the development of quantum technology.

• The ultimate goal of quantum control is to realize arbitrary quantum operations (AQuOs) for all possible open quantum system dynamics.
• However, the demanding extra physical resources impose great obstacles.
• Here, we experimentally demonstrate a universal approach of AQuO on a photonic qudit with minimum physical resource of a two-level ancilla and a $\log_{2}d$-scale circuit depth for a $d$-dimensional system.