Quantum computing of the $^6$Li nucleus via ordered unitary coupled clusters

Understand

The variational quantum eigensolver (VQE) is an algorithm to compute ground and excited state energy of quantum many-body systems.

• A key component of the algorithm and an active research area is the construction of a parametrized trial wavefunction -- a so called variational ansatz.
• The wavefunction parametrization should be expressive enough, i.e.
• represent the true eigenstate of a quantum system for some choice of parameter values.