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Home Tech Hi Tech & Innovation

Collaboration achieves record level of radio frequency signal synthesis with quantum-based accuracy

by author
November 11, 2022
in Hi Tech & Innovation, Telecom
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Record level of radio frequency signal synthesis with quantum-based accuracy achieved
Credit: National Institute of Standards and Technology

NIST, in collaboration with CU Boulder faculty, published a paper titled: “RF Josephson Arbitrary Waveform Synthesizer with Integrated Superconducting Diplexers” demonstrating results that show a significant step toward a broadband, integrated, quantum-based microwave voltage source with useful power above -30 dBm.

This milestone creates new opportunities for improving measurements of high-accuracy RF voltage and power for modern high-speed communications components and instruments.

NIST’s goal is to advance quantum-based standards for RF communications to eliminate costs and overhead in calibration and traceability chain measurements by providing self-calibrated, quantum-based standards and automated measurement capability to communication and instrument manufacturers.

The team is developing a quantum-defined superconducting programmable voltage source for generating microwave-frequency waveforms. The voltage source is an RF Josephson arbitrary waveform synthesizer (RF-JAWS) that utilizes a superconducting integrated circuit that is cooled to 4 K and is composed of an array of 4,500 Josephson junctions.

The researchers incorporated on-chip superconducting diplexers and integrated them with the RF-JAWS circuit to achieve an open-circuit signal of 22 mV rms at 1.005 GHz, which is a 25% increase in state-of-the-art. The use of integrated filtering enables 25% larger microwave amplitudes compared to the state-of-the-art thanks to a broader passband and lower loss.

Measurements of the new circuit showed that it correctly synthesized the RF waveform with a signal amplitude that was based on quantum effects.

The paper is published in IEEE Transactions on Applied Superconductivity.

More information:
Akim A. Babenko et al, RF Josephson Arbitrary Waveform Synthesizer With Integrated Superconducting Diplexers, IEEE Transactions on Applied Superconductivity (2022). DOI: 10.1109/TASC.2022.3201188

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National Institute of Standards and Technology

Citation:
Collaboration achieves record level of radio frequency signal synthesis with quantum-based accuracy (2022, November 11)
retrieved 11 November 2022
from https://techxplore.com/news/2022-11-collaboration-radio-frequency-synthesis-quantum-based.html
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.
Tags: milestonequantum effectswaveform
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