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Photonic Quantum Computing
Superconducting Qubits
Microwave Photon Counter Based on Josephson Junctions
arXiv
Authors: Y. -F. Chen, D. Hover, S. Sendelbach, L. Maurer, S. T. Merkel, E. J. Pritchett, F. K. Wilhelm, R. McDermott
Year
2010
Paper ID
28939
Status
Preprint
Abstract Read
~2 min
Abstract Words
86
Citations
N/A
Abstract
We describe a microwave photon counter based on the current-biased Josephson junction. The junction is tuned to absorb single microwave photons from the incident field, after which it tunnels into a classically observable voltage state. Using two such detectors, we have performed a microwave version of the Hanbury Brown and Twiss experiment at 4 GHz and demonstrated a clear signature of photon bunching for a thermal source. The design is readily scalable to tens of parallelized junctions, a configuration that would allow number-resolved counting of microwave photons.
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- This paper contributes to the Superconducting Qubits research area in the Quantum Articles archive.
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- We describe a microwave photon counter based on the current-biased Josephson junction.
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