Quantum characterization of superconducting photon counters

2011/03/31 by Giorgio Brida, Luigi Ciavarella, Ivo Pietro Degiovanni +10
Computer Science · Physics and Astronomy · #Characterization (materials science) #Measure (data warehouse) #Mechanical and Optical Resonators #POVM #Photon #Photon counting #Quantum #Quantum Information and Cryptography #Quantum tomography #Superconducting and THz Device Technology #Superconductivity #cond-mat.supr-con #quant-ph

paper · pdf · doi:10.1088/1367-2630/14/8/085001

published as New J. Phys. 14 (2012) 085001 · 3 figures, NJP (to appear)

arxiv created 2012/05/03 · openalex publication_date 2012/08/01 · arxiv updated 2015/05/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We address the quantum characterization of photon counters based on transition-edge sensors (TESs) and present the first experimental tomography of the positive operator-valued measure (POVM) of a TES. We provide the reliable tomographic reconstruction of the POVM elements up to 11 detected photons and M = 100 incoming photons, demonstrating that it is a linear detector.

Citations

• Quantum Information, Computation and Cryptography
• Photonic quantum technologies
• Complete Characterization of Quantum-Optical Processes
• Noise-free high-efficiency photon-number-resolving detectors
• Photon-number resolution using time-multiplexed single-photon detectors
• Tomography of quantum detectors
• Quantum process tomography with coherent states
• Counting near-infrared single-photons with 95% efficiency
• Transition-Edge Sensors