Non-perturbative evolution and measurement for quantum excited state preparation and error mitigation

Quantum chemistry and other many-body simulations have unfolded as some of the most promising applications for early quantum devices. While significant work has gone into the preparation of many-body ground states and methods to study them, excited states are equally important for the description of dynamic processes such as charge transfer and light absorption. In this talk I introduce a new approach to generating excited states that are difficult to access accurately through previous perturbative approaches. These techniques are designed to be amenable for near-term devices, and possible routes for error mitigation within this methodology will be discussed.