Method and apparatus for evolving a quantum system using a mixed initial hamiltonian comprising both diagonal and off-diagonal terms
US8229863B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2009 |
| Grant date | Jul 24, 2012 |
| Priority date | — |
| Expiry date | Feb 12, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB82Y10/00
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
Various adaptations to adiabatic quantum computation and quantum annealing are described. These adaptations generally involve tailoring an initial Hamiltonian so that a local minimum is avoided when a quantum processor is evolved from the initial Hamiltonian to a problem Hamiltonian. The initial Hamiltonian may represent a mixed Hamiltonian that includes both diagonal and off-diagonal terms, where the diagonal terms at least partially define a center point of a first computation space that is at least partially contained within a second computation space. A problem Hamiltonian may be evolved into a low energy state by inhomogeneously inducing disorder in the qubits of the quantum processor. A higher degree of disorder may be induced in a subset of qubits predicted to contribute to a local minimum of the problem Hamiltonian.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.