Single flux quantum source for projective measurements
US12020116B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 2019 |
| Grant date | Jun 25, 2024 |
| Priority date | — |
| Expiry date | May 25, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/38
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Devices, systems, and methods that include a qubit coupled to a projective-source digital-to-analog converter (PSDAC) for projective measurement of the qubit. A change in flux state of the PSDAC from a first flux state to a second flux state generates a fast-flux step or fast-step waveform that can be applied to the qubit to perform projective measurement of the qubit. For a quantum processor that includes a set of qubits wherein each qubit is coupled to a respective PSDAC, a shared trigger line can activate each PSDAC to generate a respective fast-flux step or fast-step waveform. Synchronization devices can synchronize the fast-flux steps or fast-step waveforms, allowing for projective readout of the set of qubits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.