Bipolar Waveform Synthesis With an Optically Driven Josephson Arbitrary Waveform Synthesizer

Brevik, J. A.; Lee, Dahyeon; Fox, Anna E.; Peng, Yiwei; Babenko, Akim A.; Campbell, Joe C.; Dresselhaus, Paul D.; Quinlan, Franklyn; Benz, Samuel P.

doi:10.1109/tasc.2022.3167660

Cited by 8 publications

(1 citation statement)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Photodetector operation at cold temperatures could aid in understanding noise properties as well, with the added benefit of supporting experimental endeavors linking photonic systems with superconducting circuits. [36,37,112] At room temperature, photocarrier transport noise is believed to be dominated by scattering off lattice phonons. At cryogenic temperatures, presumably such scattering is suppressed, and lower noise may result.…”

Section: Discussionmentioning

confidence: 99%

The Photodetection of Ultrashort Optical Pulse Trains for Low Noise Microwave Signal Generation

Quinlan

2023

Laser & Photonics Reviews

Self Cite

View full text Add to dashboard Cite

Electrical signals derived from optical sources have achieved record‐low levels of phase noise, and have demonstrated the highest frequency stability yet achieved in the microwave domain. Attaining such ultrastable phase and frequency performance requires high‐fidelity optical‐to‐electrical conversion, typically performed via a high‐speed photodiode. This paper reviews characteristics of the direct photodetection of optical pulses for the intent of generating high power, low phase noise microwave signals from optical sources. The two most popular types of photodiode detectors used for low noise microwave generation are discussed in terms of electrical pulse characteristics, achievable microwave power, and photodetector nonlinearities. Noise sources inherent to photodetection, such as shot noise, flicker noise, and photocarrier scattering are reviewed, and their impact on microwave phase fidelity is discussed. General guidelines for attaining the lowest noise possible from photodetection that balances power saturation, optical amplification, and amplitude‐to‐phase conversion are also presented.

show abstract

Section: Discussionmentioning

confidence: 99%

The Photodetection of Ultrashort Optical Pulse Trains for Low Noise Microwave Signal Generation

Quinlan

2023

Laser & Photonics Reviews

Self Cite

View full text Add to dashboard Cite

show abstract

Sub-GHz resolution line-by-line pulse shaper for driving superconducting circuits

Lee,

Nakamura,

Metcalf

et al. 2023

APL Photonics

View full text Add to dashboard Cite

We demonstrate a sub-GHz resolution, fully programmable Fourier-domain pulse shaper capable of generating arbitrary optical pulse patterns for superconducting circuit platforms. This high resolution allows line-by-line pulse shaping of a 1 GHz-spaced comb, and the pulse shaper can accommodate an optical bandwidth as large as 1 THz, which represents the highest resolution programmable line-by-line pulse shaping to our knowledge. Linear optical sampling with a dual-comb system confirms independent control of 1 GHz-spaced optical lines, and the low phase noise of the pulse shaper is characterized. We apply the pulse shaper as an optical drive for an array of Josephson junctions operating at a temperature of 4 K, where cryogenic photodetection of pulse doublets with user-defined separation characterizes the Josephson junction response. Furthermore, we demonstrate a pulse-density modulation pattern of 4 ps duration optical pulses that can serve as the high bandwidth drive of a quantum-based Josephson arbitrary waveform synthesizer. By leveraging the exquisite control, large bandwidth, and low noise of photonics, this represents an important advance toward the realization of high power and high spectral purity AC voltage standards at gigahertz frequencies without requiring 100 GHz bandwidth driving electronics.

show abstract

Josephson voltage standards as toolkit for precision metrological applications at PTB

Behr

Bauer

Herick

et al. 2022

Meas. Sci. Technol.

View full text Add to dashboard Cite

60 years after the discovery of the Josephson effect, electrical DC voltage calibrations are routinely performed worldwide - mostly using automated Josephson voltage standards (JVS). Nevertheless, the field of electrical quantum voltage metrology is still propagating towards AC applications. In the past 10 years the fabrication of highly integrated arrays containing more than 50 000 or even 300 000 junctions has achieved a very robust level providing highly functional devices. Such reliable Josephson arrays are the basis for many novel applications mainly focussing on precision ac measurements for signal frequencies up to 500 kHz. Two versions of quantum AC standards are being employed. Programmable Josephson voltage standards (PJVS), based on series arrays divided into subarrays, reach amplitudes up to 20 V and usually are used as quantum voltage reference in measurement systems. Pulse driven arrays reach amplitudes up to 1 V or even 4 V and are typically used as Josephson arbitrary waveform synthesizers (JAWS). This paper summarizes the principal contributions from PTB to the present state of Josephson voltage standards with particular focus on developments for precision metrological applications and our proof-of-concept demonstrations.

show abstract

Bipolar Waveform Synthesis With an Optically Driven Josephson Arbitrary Waveform Synthesizer

Cited by 8 publications

References 30 publications

The Photodetection of Ultrashort Optical Pulse Trains for Low Noise Microwave Signal Generation

The Photodetection of Ultrashort Optical Pulse Trains for Low Noise Microwave Signal Generation

Sub-GHz resolution line-by-line pulse shaper for driving superconducting circuits

Josephson voltage standards as toolkit for precision metrological applications at PTB

Contact Info

Product

Resources

About