Highly sensitive detection of single microwave photons with coherent quantum network of superconducting qubits for searching galactic axions

Deliverables

Documents, reports (5)

Invited contributions at zoom seminar talks year 2020

Oral contribution at zoom seminar talks year 2020

Theory of SQNs interacting with microwave radiation

A quantitative theory of SQNs interacting with microwave radiation in the quantum limit

Measurement of the transmission coefficient of SQNs with 5 qubits

Measurement of frequency dependence of the transmission coefficient of SQNs with 5 qubits.

Theory of coherent quantum dynamics of SQNs embedded in a cavity

General theory describing coherent quantum dynamics of SQNs embedded in a cavity

Experimental evaluation of the uniformity of Al tunnel junctions

Experimental evaluation of the uniformity of Al tunnel junctions over substrate area (10 mm x 10 mm)

Websites, patent fillings, videos etc. (1)

Project website

Project website

Open Research Data Pilot (1)

Data Management Plan

Data Management Plan for the ORDP

Other (1)

Annual meetings year 2020

Annual meetings year 2020

Demonstrators, pilots, prototypes (1)

Chip with 5 transmons and flux qubits

Chip containing SQN detectors with 5 transmons and flux qubits

Publications

Peer reviewed articles (4)

Controlling the energy gap of a tunable two-level system by ac drive

Author(s): G. Oelsner, U. Hübner, E. Il'ichev
Published in: Physical Review B, 101/5, 2020, ISSN 2469-9950
Publisher: American Physical Society (APS)
DOI: 10.1103/physrevb.101.054511

Microwave Photon Detectors Based on Semiconducting Double Quantum Dots

Author(s): Alberto Ghirri, Samuele Cornia, Marco Affronte
Published in: Sensors, 20/14, 2020, Page(s) 4010, ISSN 1424-8220
Publisher: Multidisciplinary Digital Publishing Institute (MDPI)
DOI: 10.3390/s20144010

Waveguide bandgap engineering with an array of superconducting qubits

Author(s): Jan David Brehm, Alexander N. Poddubny, Alexander Stehli, Tim Wolz, Hannes Rotzinger, Alexey V. Ustinov
Published in: npj Quantum Materials, 6/1, 2021, ISSN 2397-4648
Publisher: Nature Publishing Group
DOI: 10.1038/s41535-021-00310-z

Towards the Heisenberg limit in microwave photon detection by a qubit array

Author(s): P. Navez, A. G. Balanov, S. E. Savel'ev, A. M. Zagoskin
Published in: Physical Review B, 103/6, 2021, ISSN 2469-9950
Publisher: American Physical Society (APS)
DOI: 10.1103/physrevb.103.064503