Cryogenic frequency generation for scalable control and read-out of qubits

Cryogenic frequency generation for scalable control and read-out of qubits

Patra, B.P.

Charbon, E. (mentor)
Babaie, M. (mentor)

Electrical Engineering, Mathematics and Computer Science

Quantum Engineering

2016-10-28

Recent advances in solid-state qubit technology are paving the way to fault-tolerant quantum computing systems. However, qubit technology is limited by qubit coherence time and the scaling of quantum processors is limited by the complexity of coupling quantum systems with a classical electronic infrastructure. Hence, the proposed approach is to use CMOS at cryogenic temperatures, in order to ensure physical proximity to the quantum bits, thus reducing thermal gradients and increasing compactness. In this thesis, several RF circuits designed using commercial CMOS technology have been shown to be working at cryogenic temperatures. Such circuits could be easily interfaced (or integrated, in the future) with a qubit processor. The performance of the circuits is comparable to the state-of-the-art systems, currently used as control units for qubits. Moreover, these circuits have a much smaller form factor and could be made to work inside a dilution refrigerator where the qubits are operational, hence providing the first demonstration of a scalable solution.

http://resolver.tudelft.nl/uuid:9720d29e-e9cf-4fb4-af16-a2a5ad426ffd

2017-12-31

Student theses

master thesis

(c) 2016 Patra, B.P.