KIT | KIT-Bibliothek | Impressum | Datenschutz

Coherent Quantum Network of Superconducting Qubits as a Highly Sensitive Detector of Microwave Photons for Searching of Galactic Axions

Gatti, C.; Affronte, M.; Balanov, A.; Bonizzoni, C.; Brida, G.; Chiariello, F.; Chikhi, N.; Coda, G.; D'Elia, A.; Gioacchino, D. Di; Enrico, E.; Eremin, I.; Ernajes, M.; Il'ichev, E.; Fasolo, L.; Fistul, M.; Ghirri, A.; Greco, A.; Ligi, C.; ... mehr


We propose a novel approach to detect a low power microwave signal with a frequency of the order of several GHz based on a coherent collective response of quantum states occurring in a superconducting qubits network (SQN). An SQN composes of a large number of superconducting qubits embedded in a low-dissipative superconducting resonator. Our theory predicts that an SQN interacting with the off-resonance microwave radiation, demonstrates the collective alternating current Stark effect that can be measured even in the limit of single photon counting. A design of the layout of three terminals SQN detectors containing 10 flux qubits weakly coupled to a low-dissipative R-resonator and T-transmission line was developed. The samples were fabricated by Al-based technology with Nb resonator. The SQN detector was tested in terms of microwave measurements of scattering parameters and two-tone spectroscopy. A substantial shift of the frequency position of the transmission coefficient drop induced by a second tone pump signal was observed, and this effect clearly manifests a nonlinear multiphoton interaction between the second-tone microwave pump signal and an array of qubits.

Verlagsausgabe §
DOI: 10.5445/IR/1000158493
Veröffentlicht am 10.05.2023
DOI: 10.1109/TASC.2023.3263807
Zitationen: 1
Web of Science
Zitationen: 1
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2023
Sprache Englisch
Identifikator ISSN: 1051-8223, 1558-2515, 2378-7074
KITopen-ID: 1000158493
Erschienen in IEEE Transactions on Applied Superconductivity
Verlag Institute of Electrical and Electronics Engineers (IEEE)
Seiten 1–5
Nachgewiesen in Scopus
Web of Science
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page