Email this article Observation of a collective mode of an array of transmon qubits
- Authors: Shulga K.V.1,2,3,4, Yang P.5, Fedorov G.P.3,4, Fistul M.V.1,6,3, Weides M.5, Ustinov A.V.1,5,3
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Affiliations:
- National Research Technological University MISiS
- Institute of Solid State Physics
- Russian Quantum Center
- Moscow Institute of Physics and Technology (State University)
- Physikalisches Institut
- Theoretische Physik III
- Issue: Vol 105, No 1 (2017)
- Pages: 47-50
- Section: Quantum Informatics
- URL: https://journals.rcsi.science/0021-3640/article/view/160035
- DOI: https://doi.org/10.1134/S0021364017010143
- ID: 160035
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Abstract
Arrays of transmon qubits coupled to a λ/2 superconducting coplanar waveguide resonator have been studied by microwave spectroscopy. The emergence of a collective mode has been discovered for a cluster of N > 5 qubits, whose coupling constant to the electromagnetic field in the resonator is √N times greater compared to a single qubit. In addition, the emergence of collective multiphoton transitions exciting higher levels of a qubit cluster has been demonstrated and the interaction of an individual qubit with such a cluster has been investigated.
About the authors
K. V. Shulga
National Research Technological University MISiS; Institute of Solid State Physics; Russian Quantum Center; Moscow Institute of Physics and Technology (State University)
Author for correspondence.
Email: kirill_shulga@protonmail.ch
Russian Federation, Moscow, 119049; Chernogolovka, Moscow region, 142432; Skolkovo, Moscow region, 143025; Dolgoprudnyi, Moscow region, 141700
P. Yang
Physikalisches Institut
Email: kirill_shulga@protonmail.ch
Germany, Karlsruhe, D-76131
G. P. Fedorov
Russian Quantum Center; Moscow Institute of Physics and Technology (State University)
Email: kirill_shulga@protonmail.ch
Russian Federation, Skolkovo, Moscow region, 143025; Dolgoprudnyi, Moscow region, 141700
M. V. Fistul
National Research Technological University MISiS; Theoretische Physik III; Russian Quantum Center
Email: kirill_shulga@protonmail.ch
Russian Federation, Moscow, 119049; Bochum, D-44801; Skolkovo, Moscow region, 143025
M. Weides
Physikalisches Institut
Email: kirill_shulga@protonmail.ch
Germany, Karlsruhe, D-76131
A. V. Ustinov
National Research Technological University MISiS; Physikalisches Institut; Russian Quantum Center
Email: kirill_shulga@protonmail.ch
Russian Federation, Moscow, 119049; Karlsruhe, D-76131; Skolkovo, Moscow region, 143025
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