We are developing superconducting thin-film devices as sensitive photon detectors for frequencies from the visible to the far-infrared. Present research focuses on nanoscale bolometric detectors. An incident photon or photon flux heats the electron system of the superconducting detector element. The strong temperature-dependence of the superconducting phase transition serves as a sensitive thermometer of the electron system. The temperature increase upon photon absorption is maximized by reducing the active device dimensions to the nanoscale. This work is in collaboration with Dr. Boris Karasik (NASA-JPL) and Prof. Charles Schmuttenmaer (Yale Chemistry) and is supported by NSF-CHE.
Left: 2” silicon wafer after microfabrication of more than a hundered antenna-coupled bolometer devices.
Top right: Optical micrograph of niobium bolometer with log spiral antenna for terahertz detection.
Bottom right: Measured frequency response of device with log spiral antenna.
- “Energy-resolved detection of single infrared photons with λ = 8 μm using a superconducting microbolometer,” B.S. Karasik, S.V. Pereverzev, A. Soibel, D.F. Santavicca, D.E. Prober, D. Olaya and M.E. Gershenson, Appl. Phys. Lett. 101, 052601 (2012).
- “Nanobolometers for THz photon detection,” B.S. Karasik, A.V. Sergeev and D.E. Prober, IEEE Transactions on Terahertz Science and Technology 1, 97 (2011).
- “Proposal for a GHz count rate near-IR single-photon detector based on a nanoscale superconducting transition edge sensor,” D.F. Santavicca, F.W. Carter and D.E. Prober, Proc. SPIE 8033, 80330W (2011).
- “Energy resolution of terahertz single-photon-sensitive bolometric detectors,” D.F. Santavicca, B. Reulet, B.S. Karasik, S.V. Pereverzev, D. Olaya, M.E. Gershenson, L. Frunzio and D.E. Prober, Appl. Phys. Lett. 96, 083505 (2010).
- “Reset dynamics and latching in niobium superconducting nanowire single photon detectors,” A.J. Annunziata, O. Quaranta, D.F. Santavicca, A. Casaburi, L. Frunzio, M. Ejrnaes, M.J. Rooks, R. Cristiano, S. Pagano, A. Frydman and D.E. Prober, J. Appl. Phys. 108, 084507 (2010).
- “Tunable superconducting nanoinductors,” A.J. Annunziata, D.F. Santavicca, L. Frunzio, G. Catelani, M.J. Rooks, A. Frydman and D.E. Prober, Nanotechnology21, 445202 (2010).
- “Superconducting single photon detectors,” a keynote talk given by Daniel Prober at the Keck Institute for Space Studies Workshop on Single Photon Counting Detectors (Caltech, 2010) [slides] [video]
- “Energy resolution of THz single-photon-sensitive bolometric detectors,” an invited talk given by Daniel Santavicca at the Keck Institute for Space Studies Workshop on Single Photon Counting Detectors (Caltech, 2010) [slides]