Photon noise from chaotic and coherent millimeter-wave sources measured with horn-coupled, aluminum lumped-element kinetic inductance detectors

D. Flanigan, H. McCarrick, G. Jones, B. R. Johnson, M. H. Abitbol, P. Ade, D. Araujo, K. Bradford, R. Cantor, G. Che, P. Day, S. Doyle, C. B. Kjellstrand, H. Leduc, M. Limon, V. Luu, Philip Mauskopf, A. Miller, T. Mroczkowski, C. TuckerJ. Zmuidzinas

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Abstract

We report photon-noise limited performance of horn-coupled, aluminum lumped-element kinetic inductance detectors at millimeter wavelengths. The detectors are illuminated by a millimeter-wave source that uses an active multiplier chain to produce radiation between 140 and 160 GHz. We feed the multiplier with either amplified broadband noise or a continuous-wave tone from a microwave signal generator. We demonstrate that the detector response over a 40 dB range of source power is well-described by a simple model that considers the number of quasiparticles. The detector noise-equivalent power (NEP) is dominated by photon noise when the absorbed power is greater than approximately 1 pW, which corresponds to NEP≈2×10-17 W Hz-1/2, referenced to absorbed power. At higher source power levels, we observe the relationships between noise and power expected from the photon statistics of the source signal: NEPP for broadband (chaotic) illumination and NEPP1/2 for continuous-wave (coherent) illumination.

Original languageEnglish (US)
Article number083504
JournalApplied Physics Letters
Volume108
Issue number8
DOIs
StatePublished - Feb 22 2016

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Flanigan, D., McCarrick, H., Jones, G., Johnson, B. R., Abitbol, M. H., Ade, P., Araujo, D., Bradford, K., Cantor, R., Che, G., Day, P., Doyle, S., Kjellstrand, C. B., Leduc, H., Limon, M., Luu, V., Mauskopf, P., Miller, A., Mroczkowski, T., ... Zmuidzinas, J. (2016). Photon noise from chaotic and coherent millimeter-wave sources measured with horn-coupled, aluminum lumped-element kinetic inductance detectors. Applied Physics Letters, 108(8), [083504]. https://doi.org/10.1063/1.4942804