Digital Predistortion for Flux Control of Tunable Superconducting Qubits
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2026
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866917415989805056 |
|---|---|
| author | Venkateswaran, Dharun Tafuri, Felice Francesco Tan, Yuanzheng Paul Martinez, Bruno Aznar Danilenko, Alisa Yang, Likai Carignan-Dugas, Arnaud Hufnagel, Christoph Dumke, Rainer Krantz, Philip Holland, Eric T. |
| author_facet | Venkateswaran, Dharun Tafuri, Felice Francesco Tan, Yuanzheng Paul Martinez, Bruno Aznar Danilenko, Alisa Yang, Likai Carignan-Dugas, Arnaud Hufnagel, Christoph Dumke, Rainer Krantz, Philip Holland, Eric T. |
| contents | Flux-tunable superconducting qubits rely on fast flux control pulses to implement two-qubit entangling quantum gates, a key building block for quantum algorithms. However, distortion effects introduced by non-ideal control electronics, parasitic components, and the cryogenic quantum chip response can all degrade the gate fidelity. We present a digital predistortion (DPD) framework for characterizing and then compensating for these distortions using a combination of infinite impulse response (IIR) and finite impulse response (FIR) filters. Experiments on a flux-tunable quantum processing unit (QPU) demonstrate a successful correction of step-response distortions on the flux-control line, with a compensated control signal showing only sub-percent deviations from the ideal target linear behavior. The demonstrated method enables automated rapid calibration of flux control channels for superconducting QPUs. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_15895 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Digital Predistortion for Flux Control of Tunable Superconducting Qubits Venkateswaran, Dharun Tafuri, Felice Francesco Tan, Yuanzheng Paul Martinez, Bruno Aznar Danilenko, Alisa Yang, Likai Carignan-Dugas, Arnaud Hufnagel, Christoph Dumke, Rainer Krantz, Philip Holland, Eric T. Quantum Physics Superconductivity Flux-tunable superconducting qubits rely on fast flux control pulses to implement two-qubit entangling quantum gates, a key building block for quantum algorithms. However, distortion effects introduced by non-ideal control electronics, parasitic components, and the cryogenic quantum chip response can all degrade the gate fidelity. We present a digital predistortion (DPD) framework for characterizing and then compensating for these distortions using a combination of infinite impulse response (IIR) and finite impulse response (FIR) filters. Experiments on a flux-tunable quantum processing unit (QPU) demonstrate a successful correction of step-response distortions on the flux-control line, with a compensated control signal showing only sub-percent deviations from the ideal target linear behavior. The demonstrated method enables automated rapid calibration of flux control channels for superconducting QPUs. |
| title | Digital Predistortion for Flux Control of Tunable Superconducting Qubits |
| topic | Quantum Physics Superconductivity |
| url | https://arxiv.org/abs/2604.15895 |