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Energy resolution of terahertz single-photon-sensitive bolometric detectors

Source: Appl. Phys. Lett. 96, 083505 (2010); doi:10.1063/1.3336008

Published 25 February 2010

KEYWORDS and PACS
Keywords
PACS
  • 85.25.Pb
    Superconducting infrared, submillimeter and millimeter wave detectors
  • 85.60.Gz
    Photodetectors
  • 07.57.Kp
    Bolometers; infrared, submillimeter wave, microwave, and radiowave receivers and detectors
  • YEAR: 2010
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PUBLICATION DATA
ISSN:
1553-9644 (online)
Publisher:
AIP is a member of CrossRef AIP
D. F. Santavicca,1 B. Reulet,2 B. S. Karasik,3 S. V. Pereverzev,3 D. Olaya,4 M. E. Gershenson,4 L. Frunzio,1 and D. E. Prober1
1Department of Applied Physics, Yale University, New Haven, Connecticut 06520, USA
2Laboratoire de Physique des Solides, Universite Paris-Sud, 91405 Orsay, France
3Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109, USA
4Department of Physics, Rutgers University, Piscataway, New Jersey 08854, USA
We report measurements of the energy resolution of ultrasensitive superconducting bolometric detectors. The device is a superconducting titanium nanobridge with niobium contacts. A fast microwave pulse is used to simulate a single higher-frequency photon, where the absorbed energy of the pulse is equal to the photon energy. This technique allows precise calibration of the input coupling and avoids problems with unwanted background photons. Present devices have an intrinsic full-width at half-maximum energy resolution of approximately 23 THz, near the predicted value due to intrinsic thermal fluctuation noise. ©2010 American Institute of Physics
History: Received 18 May 2009; accepted 5 February 2010; published 25 February 2010
Permalink: http://link.aip.org/link/?APPLAB/96/083505/1

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