Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

High-efficiency photon-number resolving detectors based on hafnium transition-edge sensors

Published

Author(s)

Adriana E. Lita, Brice R. Calkins, Lenson Pellouchoud, Aaron J. Miller, Sae Woo Nam

Abstract

Generation of non-classical states of light is at the foundation of numerous quantum optics experiments and optical quantum information processing implementations. One such non-Gaussian optical quantum state can be obtained by photon subtraction from a squeezed optical state. Photon-number-resolving detectors with high efficiency and low dark counts are needed for heralding the subtraction of one, two or more photons. Transition edge sensors (TES) optimized for high detection efficiency at 850 nm seem to be ideal heralding detectors for such quantum optics experiments. In this work, we describe the fabrication and characterization of hafnium TESs embedded in an optical structure for optimal absorption at 850 nm. Accurate measurements of optical constants for all materials and fine control of layer thicknesses in the optical cavity should increase the detector efficiency to values higher than 95%.
Citation
AIP Conference Proceedings

Keywords

Optical superconducting transition edge sensor, Photon number resolving detector, Quantum optics

Citation

Lita, A. , Calkins, B. , Pellouchoud, L. , Miller, A. and Nam, S. (2009), High-efficiency photon-number resolving detectors based on hafnium transition-edge sensors, AIP Conference Proceedings, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=903441 (Accessed May 28, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created September 1, 2009, Updated February 19, 2017