TY  - CONF
AU  - Bühler, Jonas
AU  - Ashok, Arun
AU  - Duipmans, Lammert
AU  - Grewing, Christian
AU  - Kruth, Andre
AU  - Kusuma, Sabitha
AU  - Mair, Carl-Jonas
AU  - Nielinger, Dennis
AU  - Schubert, Petra
AU  - Vliex, Patrick
AU  - Zambanini, Andre
AU  - van Waasen, Stefan
TI  - Quocca: Scalable Quantum Control and Readout Platform
M1  - FZJ-2025-04505
PY  - 2025
AB  - Universal quantum computing, requires a scalable system with millions of qubits. One of the current bottlenecks is a fast and high fidelity readout without limiting the scalability by area consumption, wiring, or power dissipation. We address this challenge by developing an integrated readout circuitry (IC), in a 22 nm FD-SOI technology, operating at deep cryogenic temperatures. The IC will be connected to a Single Electron Transistor (SET). The prototype is made for reading out two SETs. It implements a high speed mode, to perform a single bit readout to distinct │0〉and │1〉state and a high resolution mode for tuning, which amplifies the signal and passes it to the room-temperature electronics.We characterize this IC inside a closed cycle Gifford-McMahon cryostat at a temperature of 6 K. The measurement shows a power consumption of 33.6 µW/SET for the single bit readout and 216 µW for the high-resolution mode. With a sampling time of 2×1 µs, the circuit shows low noise of 223 pA (1σ) for single bit readout, while the high-resolution mode has an input-referred noise level of 188 pA RMS (10 Hz to 1 MHz).With its high bandwidth, low input noise and low power consumption, this IC paves the way for scalable integrated readout and is a decisive step on the way to universal quantum computing
T2  - European Cryogenic Days 2025
CY  - 28 Oct 2025 - 30 Oct 2025, Enschede (Germany)
Y2  - 28 Oct 2025 - 30 Oct 2025
M2  - Enschede, Germany
LB  - PUB:(DE-HGF)6
UR  - https://juser.fz-juelich.de/record/1048114
ER  -