Programming a quantum computer with quantum instructions

Understand

The equivalence between the instructions used to define programs and the input data on which the instructions operate is a basic principle of classical computer architectures and programming.

• Replacing classical data with quantum states enables fundamentally new computational capabilities with scaling advantages for many applications, and numerous models have been proposed for realizing quantum computation.
• However, within each of these models, the quantum data are transformed by a set of gates that are compiled using solely classical information.
• Conventional quantum computing models thus break the instruction-data symmetry: classical instructions and quantum data are not directly interchangeable.