A titanium-nitride near-infrared kinetic inductance photon-counting detector and its anomalous electrodynamics

Published

October 1, 2012

Author(s)

Martin O. Sandberg, Fabio C. da Silva, Kent D. Irwin, David P. Pappas, Sae Woo Nam, David Wisbey, Ben Mazin, Seth Meeker, Jonas Zmuidzinas, Henry G. Leduc

Abstract

We demonstrate single-photon counting at 1550 nm with titanium-nitride (TiN) microwave kinetic inductancedetectors. Full-width-at-half-maximum energy resolution of 0.4 eV is achieved. 0-, 1-, 2- photon events are resolved and shown to follow Poisson statistics. We find that the temperature- dependent frequency shift deviates from the Mattis-Bardeen theory, and the dissipation response shows a shorter decay time than the frequency response at low temperatures. We suggest that the observed anomalous electrodynamics may be related to quasiparticle traps or subgap states in the disordered TiN films. Finally, the electron density-of-states is derived from the pulse response.

Citation

Applied Physics Letters

Volume

101

Issue

14

Pub Type

Journals

Download Paper

https://doi.org/10.1063/1.4756916

Local Download

Keywords

kinetic inductance detector, single photon detector, titanium nitride

Citation

Sandberg, M. , da Silva, F. , Irwin, K. , Pappas, D. , Nam, S. , Wisbey, D. , Mazin, B. , Meeker, S. , Zmuidzinas, J. and Leduc, H. (2012), A titanium-nitride near-infrared kinetic inductance photon-counting detector and its anomalous electrodynamics, Applied Physics Letters, [online], https://doi.org/10.1063/1.4756916, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=911819 (Accessed October 8, 2025)