Searched for: subject%3A%22noise%22
(1 - 7 of 7)
document
Gong, J. (author), Charbon-Iwasaki-Charbon, E. (author), Sebastiano, F. (author), Babaie, M. (author)
This article presents the first cryogenic phase-locked loop (PLL) operating at 4.2 K. The PLL is designed for the control system of scalable quantum computers. The specifications of PLL are derived from the required control fidelity for a single-qubit operation. By considering the benefits and challenges of cryogenic operation, a dedicated...
journal article 2023
document
Gong, J. (author), Charbon-Iwasaki-Charbon, E. (author), Sebastiano, F. (author), Babaie, M. (author)
This article presents a low-jitter and low-spur charge-sampling phase-locked loop (CSPLL). A charge-domain sub-sampling phase detector is introduced to achieve a high phase-detection gain and to reduce the PLL in-band phase noise. Even without employing any power-hungry isolation buffers, the proposed phase detector dramatically suppresses...
journal article 2022
document
Gong, J. (author), Chen, Y. (author), Charbon-Iwasaki-Charbon, E. (author), Sebastiano, F. (author), Babaie, M. (author)
This article presents a 4-to-5GHz LC oscillator operating at 4.2K for quantum computing applications. The phase noise (PN) specification of the oscillator is derived based on the control fidelity for a single-qubit operation. To reveal the substantial gap between the theoretical predictions and measurement results at cryogenic temperatures, a...
journal article 2022
document
Kiene, G. (author), GUNAPUTI SREENIVASULU, A.M. (author), Overwater, R.W.J. (author), Babaie, M. (author), Sebastiano, F. (author)
This paper reports the experimental characterization and modelling of a stand-Alone StrongARM comparator at both room temperature (RT) and cryogenic temperature (4.2 K). The observed 6-dB improvement in the comparator input noise at 4.2 K is attributed to the reduction of the thermal noise and to the suppressed shot noise in the MOS...
conference paper 2022
document
Patra, B (author), Incandela, R.M. (author), van Dijk, J.P.G. (author), Homulle, Harald (author), Song, Lin (author), Shahmohammadi, M. (author), Staszewski, R.B. (author), Vladimirescu, A. (author), Babaie, M. (author), Sebastiano, F. (author), Charbon-Iwasaki-Charbon, E. (author)
A fault-tolerant quantum computer with millions of quantum bits (qubits) requires massive yet very precise control electronics for the manipulation and readout of individual qubits. CMOS operating at cryogenic temperatures down to 4 K (cryo-CMOS) allows for closer system integration, thus promising a scalable solution to enable future quantum...
contribution to periodical 2018
document
Karmakar, S. (author), Gonen, B. (author), Sebastiano, F. (author), Van Veldhoven, Robert (author), Makinwa, K.A.A. (author)
Micro-power ADCs with high linearity and dynamic range (DR) are required in several applications, such as smart sensors, biomedical imaging, and portable instrumentation. Since the signals of interest are then often small (tens of μν) and slow (<1kHz BW), such ADCs should also exhibit low offset and flicker noise. Noise-shaping SAR [1] and...
conference paper 2018
document
Sonmez, U. (author), Sebastiano, F. (author), Makinwa, K.A.A. (author)
VCO-based phase-domain ΣΔ modulators employ the combination of a voltage-controlled-oscillator (VCO) and an up/down counter to replace the analog loop filter used in conventional ΣΔ modulators. Thanks to this highly digital architecture, they can be quite compact, and are expected to shrink even further with CMOS scaling. This paper describes...
journal article 2017
Searched for: subject%3A%22noise%22
(1 - 7 of 7)