Targeting many-body eigenstates on a quantum computer
US12079686B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2019 |
| Grant date | Sep 3, 2024 |
| Priority date | — |
| Expiry date | Sep 19, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/173
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods, systems and apparatus for targeting many-body states on a quantum computer. In one aspect, a method includes an adaptive phase shift method that includes preparing the quantum system in an initial state, wherein the initial state has non-zero overlap with the target eigenstate; preparing an ancilla qubit in a zero computational basis state; and iteratively applying a quantum eigenstate locking circuit to the quantum system and ancilla qubit until the state of the quantum system approximates the target eigenstate, wherein the quantum eigenstate locking circuit comprises a phase gate that, at each n-th iteration, is updated using a current average energy estimate of the quantum system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.