TY  - CONF
AU  - Cabrera Galicia, Alfonso Rafael
AU  - Ashok, Arun
AU  - Vliex, Patrick
AU  - Schreckenberg, Lea
AU  - Chava, Phanish
AU  - Baje Shankarakrishna Bhat, Swasthik
AU  - Kruth, Andre
AU  - Zambanini, Andre
AU  - van Waasen, Stefan
TI  - Power Integrity Challenges in Large Scale Quantum Computers and Solutions
PB  - Universität Duisburg-Essen
M1  - FZJ-2024-00578
PY  - 2023
AB  - The ICs belonging to a quantum computer need stable and regulated supply voltages for proper operation, e.g. the phase noise of RF oscillators is dependent on their power supply quality. Moreover, the power supply needs of a large scale QC will be challenging to satisfy by simply using supply lines connecting the ICs inside the cryostat with the power sources at room temperature. This is because voltage ripples (e.g. pulse tube vibration induced noise), ground loops induced noise and dynamic load currents may affect the ICs supply lines and compromise the QC power integrity. Furthermore, it is expected that the connection lines available in large scale QCs be scarce due to the limited cryostat space. Therefore, the usage of several lines to set different supply domains may not be possible and be a restricting factor for the QCs scalability.This presentation will address the cryogenic power integrity topic by providing:— A review of the power integrity challenges faced by cryogenic ICs. — Solution approaches focused on the cryogenic setup and the use of cryogenic voltage regulators. — Cryogenic characterization and modelling of FDSOI technology (22 nm) for ICs design. — Design and test of cryogenic voltage references, based on cryogenic Vth saturation and Vth difference. — Design and test of a cryogenic voltage regulator. — Design of Digital LDOs for cryogenic applications. — An application case: cryogenic voltage regulator applied to power the reference circuit of a cryogenic DAC used for the DC voltage setting of a Single Electron Transistor Quantum Dot
T2  - IEEE Workshop on Quantum Computing: Devices, Cryogenic Electronics and Packaging
CY  - 24 Oct 2023 - 25 Oct 2023, Milpitas (USA)
Y2  - 24 Oct 2023 - 25 Oct 2023
M2  - Milpitas, USA
LB  - PUB:(DE-HGF)31
DO  - DOI:10.34734/FZJ-2024-00578
UR  - https://juser.fz-juelich.de/record/1021124
ER  -