New architecture for a Quantum Information Processor studied using Nanonis Tramea

CNT Quantum Dot
Coulomb Diamonds of a quantum dot formed in a carbon nanotube (courtesy of A. Baumgartner, University of Basel)

Congratulations to the researchers

Researchers from the Advanced Device Laboratory at RIKEN and the University in Tokyo in Japan in collaboration with groups from Changsha in China, Havard and the University of Massuchusetts in the US have developed a new hybrid architecture for a Quantum Information Processor. The architecture comprises a microwave transmission line resonator that is controllably coupled to a
hole charge qubit formed in a Ge/Si core/shell nanowire, which is a natural one-dimensional hole gas with a strong spināˆ’orbit interaction (SOI) and lack of nuclear spin scattering, potentially enabling fast spin manipulation by electric manners and long coherence times. The charge qubit is established in a double quantum dot defined by local electrical gates. The transition energy of the qubit can be tuned across the photon level by local electrical gating, thus turning on and off the coupling, which is detected from the response of the transmitted signal through the cavity.

Further details can be obtained from the publication. The experimental setup has been realized around a Nanonis Tramea Quantum Transport Measurement System.

Congratulations to the authors for this excellent publication.

Coloumb Diamonds

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