Natarajan, C.
, Peruzzo, A.
, Miki, S.
, Sasaki, M.
, Wang, Z.
, Baek, B.
, Nam, S.
, Hadfield, R.
and O'Brien, J.
(2010),
Operating quantum waveguide circuits with superconducting single-photon detectors, Applied Physics Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=904567
(Accessed December 26, 2024)
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Operating quantum waveguide circuits with superconducting single-photon detectors
Published
Author(s)
C. M. Natarajan, A. Peruzzo, Shigehito Miki, Masahide Sasaki, Z. Wang, , , Robert Hadfield, Jeremy L. O'Brien
Abstract
Advanced quantum information science and technology (QIST) applications place exacting demands on optical components. Quantum waveguide circuits offer a route to scalable QIST on a chip. Superconducting single-photon detectors (SSPDs) provide infrared single-photon sensitivity combined with low dark counts and picosecond timing resolution. In this study, we bring these two technologies together. Using SSPDs we observe a two-photon interference visibility of 92.3 ± 1.0% in a silica-on-silicon waveguide directional coupler at λ=804 nm higher than that measured with silicon detectors (89.9 ± 0.3%). We further operated controlled-NOT gate and quantum metrology circuits with SSPDs. These demonstrations present a clear path to telecom-wavelength quantum waveguide circuits.Citation
Applied Physics Letters
Volume
96
Pub Type
Journals
Download Paper
Keywords
superconducting nanowire single photon detector, optical waveguide, photonic quantum circuit
Citation
Issues
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Created May 23, 2010, Updated October 12, 2021