Shadow-based quantum subspace algorithm for the nuclear shell model

Understand

In recent years, researchers have been exploring the applications of noisy intermediate-scale quantum (NISQ) computation in various fields.

• One important area in which quantum computation can outperform classical computers is the ground state problem of a many-body system, e.g., the nucleus.
• However, using a quantum computer in the NISQ era to solve a meaningful-scale system remains a challenge.
• To calculate the ground energy of nuclear systems, we propose a new algorithm that combines classical shadow and subspace diagonalization techniques.