A 7.4μW and 860μm² per channel cryo-CMOS IC for 70-channel frequency-multiplexed μs-readout of semiconductor qubits

Quentin Schmidt (1) , Brian Martinez (1) , Thomas Houriez (1) , Baptiste Jadot (1) , Aloysius Jansen (2) , Xavier Jehl (2) , Tristan Meunier (3) , Gaël Pillonnet (1) , Gérard Billiot (1) , Adrien Morel (4) , Yvain Thonnart (5) , Franck Badets (1)

1 CEA-LETI - Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information
2 PHELIQS - PHotonique, ELectronique et Ingénierie QuantiqueS
3 NEEL - QuantECA - Circuits électroniques quantiques Alpes
4 SYMME - Laboratoire SYstèmes et Matériaux pour la MEcatronique
5 LIST (CEA) - Laboratoire d'Intégration des Systèmes et des Technologies

This paper presents a fully integrated readout circuit operating at 4.2K for frequency division multiplexing readout based on qubit charge sensing. Our chain based on a capacitive feedback TIA achieves a reading capability of 70 parallel channels down to 6µs for a 10-3 BER and reaches a power efficiency of 7.4µW per channel and a footprint efficiency of 857µm² requiring no external passives.

Mots clés: cryo-CMOS; spin qubits; semiconductor qubits; quantum-classical; TIA; transimpedance amplifier; single electron transistors.

Domaines: Micro et nanotechnologies/Microélectronique

Quentin Schmidt, Brian Martinez, Thomas Houriez, Baptiste Jadot, Aloysius Jansen, et al.. A 7.4μW and 860μm² per channel cryo-CMOS IC for 70-channel frequency-multiplexed μs-readout of semiconductor qubits. Custom Integrated Circuit Conference 2024, IEEE, Apr 2024, Denver, United States. pp.11-6. ⟨cea-04563150⟩