Coherent microwave-photon-mediated coupling between a semiconductor and a superconducting qubit

Open access
Date
2019Type
- Journal Article
Citations
Cited 28 times in
Web of Science
Cited 30 times in
Scopus
ETH Bibliography
yes
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Abstract
Semiconductor qubits rely on the control of charge and spin degrees of freedom of electrons or holes confined in quantum dots. They constitute a promising approach to quantum information processing, complementary to superconducting qubits. Here, we demonstrate coherent coupling between a superconducting transmon qubit and a semiconductor double quantum dot (DQD) charge qubit mediated by virtual microwave photon excitations in a tunable high-impedance SQUID array resonator acting as a quantum bus. The transmon-charge qubit coherent coupling rate (~21 MHz) exceeds the linewidth of both the transmon (~0.8 MHz) and the DQD charge qubit (~2.7 MHz). By tuning the qubits into resonance for a controlled amount of time, we observe coherent oscillations between the constituents of this hybrid quantum system. These results enable a new class of experiments exploring the use of two-qubit interactions mediated by microwave photons to create entangled states between semiconductor and superconducting qubits. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000353939Publication status
publishedExternal links
Journal / series
Nature CommunicationsVolume
Pages / Article No.
Publisher
Nature Publishing GroupOrganisational unit
03439 - Ensslin, Klaus / Ensslin, Klaus
08835 - Ihn, Thomas (Tit.-Prof.)
03720 - Wallraff, Andreas / Wallraff, Andreas
03833 - Wegscheider, Werner / Wegscheider, Werner
02205 - FIRST-Lab / FIRST Center for Micro- and Nanoscience
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Show all metadata
Citations
Cited 28 times in
Web of Science
Cited 30 times in
Scopus
ETH Bibliography
yes
Altmetrics