System and method of quantum stochastic rounding using silicon based quantum dot arrays
US12395162B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2021 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | Jun 20, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N69/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A novel and useful system and method of quantum stochastic rounding using silicon based quantum dot arrays. Unitary noise is derived from a probability of detecting a particle within a quantum dot comprising position based charge qubits with two time independent basis states |0> and |1>. A two level electron tunneling device generates quantum noise and includes a reservoir of particles, a quantum dot, and a barrier used to control tunneling between the reservoir and the quantum dot. A detector outputs a digital stream corresponding to the probability of a particle being detected. Controlling the bias applied to the barrier controls the probability of detection. The probability density function (PDF) of the output unitary noise is controlled to correspond to a desired probability. Unitary noise is used to perform stochastic rounding by controlling the bias applied to the barrier according to a remainder of numbers to be rounded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.