Skip to Main content Skip to Navigation
Journal articles

Multiplexed readout of transmon qubits with Josephson bifurcation amplifiers

V Schmitt 1 Xin Zhou 1 K Juliusson 1 D Blais 2, 3 P Bertet 1 D Vion 1 D Esteve 1 
1 QUANTRONICS - Quantronics Group
SPEC - UMR3680 - Service de physique de l'état condensé, IRAMIS - Institut Rayonnement Matière de Saclay
Abstract : Achieving individual qubit readout is a major challenge in the development of scalable supercon-ducting quantum processors. We have implemented the multiplexed readout of a four transmon qubit circuit using non-linear resonators operated as Josephson bifurcation amplifiers. We demonstrate the simultaneous measurement of Rabi oscillations of the four transmons. We find that multiplexed Josephson bifurcation is a high-fidelity readout method, the scalability of which is not limited by the need of a large bandwidth nearly quantum-limited amplifier as is the case with linear readout resonators.
Document type :
Journal articles
Complete list of metadata

Cited literature [20 references]  Display  Hide  Download
Contributor : Dominique GIRARD Connect in order to contact the contributor
Submitted on : Thursday, October 20, 2016 - 2:18:35 PM
Last modification on : Tuesday, October 4, 2022 - 4:00:27 PM


Files produced by the author(s)




V Schmitt, Xin Zhou, K Juliusson, D Blais, P Bertet, et al.. Multiplexed readout of transmon qubits with Josephson bifurcation amplifiers. Physical Review A : Atomic, molecular, and optical physics, American Physical Society, 2014, 90 (6), pp.62333. ⟨10.1103/PhysRevA.90.062333⟩. ⟨cea-01384732⟩



Record views


Files downloads