Hybrid quantum-classical computer system for implementing and optimizing quantum Boltzmann machines
US11605015B2 · kind B2 · utility
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Key dates
| Filing date | Oct 24, 2019 |
| Grant date | Mar 14, 2023 |
| Priority date | — |
| Expiry date | May 13, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06N10/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A hybrid quantum-classical (HQC) computer prepares a quantum Boltzmann machine (QBM) in a pure state. The state is evolved in time according to a chaotic, tunable quantum Hamiltonian. The pure state locally approximates a (potentially highly correlated) quantum thermal state at a known temperature. With the chaotic quantum Hamiltonian, a quantum quench can be performed to locally sample observables in quantum thermal states. With the samples, an inverse temperature of the QBM can be approximated, as needed for determining the correct sign and magnitude of the gradient of a loss function of the QBM.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.