Data provided by National Institute of Standards and Technology
Dataset for the APL paper "Superconducting Qubit Control Using Cryogenic Frequency Conversion".
Abstract:
Expanding to higher qubit frequencies introduces the challenge of routing > 20 GHz signals into a dilution refrigerator without adding excess thermal load or frequency-dependent loss. In this work, we demonstrate a solution to this problem by using a frequency multiplier to drive the qubit with room-temperature control pulses at half or one third of the qubit frequency fQB. The control pulses are up-converted inside the cryogenic environment using a frequency multiplier based on a high-kinetic inductance nonlinear transmission line. We evaluated the success of the up-conversion technique by comparing the randomized benchmarking error-per-gate metrics to that of a standard direct qubit driving technique. The fQB/2 drive technique achieved error rates consistent with the direct drive, with a minimum error-per-gate of 3.5x10−3±0.4x10−3. The fQB/3 drive technique resulted in a minimum error per gate of 7.6x10−3±0.81x10−3. While this demonstration is based around a fQB = 4.836 GHz qubit so that a direct drive comparison is possible, this technique will allow higher-frequency qubits to be tested using existing radio-frequency (RF) infrastructure.
About this Dataset
Updated: 2026-09-04
Metadata Last Updated:
2026-02-26 00:00:00
Date Created:
N/A
Data Provided by:
Dataset Owner:
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| Title | Superconducting Qubit Control Using Cryogenic Frequency Conversion |
|---|---|
| Description | Dataset for the APL paper "Superconducting Qubit Control Using Cryogenic Frequency Conversion". Abstract: Expanding to higher qubit frequencies introduces the challenge of routing > 20 GHz signals into a dilution refrigerator without adding excess thermal load or frequency-dependent loss. In this work, we demonstrate a solution to this problem by using a frequency multiplier to drive the qubit with room-temperature control pulses at half or one third of the qubit frequency fQB. The control pulses are up-converted inside the cryogenic environment using a frequency multiplier based on a high-kinetic inductance nonlinear transmission line. We evaluated the success of the up-conversion technique by comparing the randomized benchmarking error-per-gate metrics to that of a standard direct qubit driving technique. The fQB/2 drive technique achieved error rates consistent with the direct drive, with a minimum error-per-gate of 3.5x10−3±0.4x10−3. The fQB/3 drive technique resulted in a minimum error per gate of 7.6x10−3±0.81x10−3. While this demonstration is based around a fQB = 4.836 GHz qubit so that a direct drive comparison is possible, this technique will allow higher-frequency qubits to be tested using existing radio-frequency (RF) infrastructure. |
| Modified | 2026-02-26 00:00:00 |
| Publisher Name | National Institute of Standards and Technology |
| Contact | mailto:[email protected] |
| Keywords | Superconductors , kinetic inductance , Frequency conversion. |
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