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Characterization of Terahertz Single-Photon-Sensitive Bolometric Detectors Using a Pulsed Microwave Technique

Santavicca, D. F. and Reulet, B. and Karasik, B. S. and Pereverzev, S. V. and Olaya, D. and Gershenson, M. E. and Frunzio, L. and Prober, D. E. (2009) Characterization of Terahertz Single-Photon-Sensitive Bolometric Detectors Using a Pulsed Microwave Technique. In: Low Temperature Detectors LTD-13. AIP Conference Proceedings. No.1185. American Institute of Physics , Melville, NY, pp. 72-75. ISBN 978-0-7354-0751-0.

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We describe a technique for characterizing bolometric detectors that have sufficient sensitivity to count single terahertz photons. The device is isolated from infrared blackbody radiation and a single terahertz photon is simulated by a fast microwave pulse, where the absorbed energy of the pulse is equal to the photon energy. We have employed this technique to characterize bolometric detectors consisting of a superconducting titanium nanobridge with niobium contacts. Present devices have T_c = 0.3K and a measured intrinsic energy resolution of approximately 6 terahertz full‐width at half‐maximum, near the predicted value due to intrinsic thermal fluctuation noise, with a time constant of 2 μs. An intrinsic energy resolution of 1 terahertz should be achievable by reducing the volume of the titanium nanobridge. Such a detector has important applications in future space‐based terahertz astronomy missions.

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Additional Information:© 2009 American Institute of Physics. The work at Yale was supported in part by NSF CHE-0616875 and Yale University. The work by B.K. and S.P. was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. The work at Rutgers was supported in part by NSF-ECS-0608842 and the Rutgers Academic Excellence Fund. B.R. acknowledges Yale support from the Flint Fund for Nanoscience for research visits during the summers of 2008 and 2009. L.F. acknowledges partial support from CNR-Istituto di Cibemetica, Pozzuoh, Italy.
Group:Keck Institute for Space Studies
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Yale UniversityUNSPECIFIED
Rutgers UniversityUNSPECIFIED
Flint Fund for NanoscienceUNSPECIFIED
Consiglio Nazionale delle Ricerche (CNR)UNSPECIFIED
Istituto di CibemeticaUNSPECIFIED
Subject Keywords: terahertz, single-photon detector, calorimeter, superconducting bolometer, energy resolution
Series Name:AIP Conference Proceedings
Issue or Number:1185
Classification Code:PACS: 07.57.Kp, 85.25.Pb
Record Number:CaltechAUTHORS:20160311-153420906
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:65324
Deposited By: Colette Connor
Deposited On:12 Mar 2016 00:05
Last Modified:10 Nov 2021 23:44

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