Towards integrated superconducting detectors on lithium niobate waveguides
| Autor: | Raimund Ricken, Nicola Montaut, Christine Silberhorn, Matteo Santandrea, Stephan Krapick, Thomas Gerrits, Viktor Quiring, Frederik Thiele, Evan Meyer-Scott, Moritz Bartnick, Harald Herrmann, Sebastian Lengeling, Sae Woo Nam, Jan Philipp Höpker, Torsten Meier, Adriana E. Lita, Tim J. Bartley, Varun B. Verma |
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| Rok vydání: | 2017 |
| Předmět: |
Physics - Instrumentation and Detectors
Materials science Lithium niobate Nanowire FOS: Physical sciences Physics::Optics chemistry.chemical_element 02 engineering and technology Tungsten 01 natural sciences Superconductivity (cond-mat.supr-con) 010309 optics chemistry.chemical_compound 0103 physical sciences Quantum optics Quantum Physics business.industry Condensed Matter - Superconductivity Detector Instrumentation and Detectors (physics.ins-det) 021001 nanoscience & nanotechnology Polarization (waves) Photon counting chemistry Modulation Optoelectronics Quantum Physics (quant-ph) 0210 nano-technology business Optics (physics.optics) Physics - Optics |
| Zdroj: | Quantum Photonic Devices. |
| DOI: | 10.1117/12.2273388 |
| Popis: | Superconducting detectors are now well-established tools for low-light optics, and in particular quantum optics, boasting high-efficiency, fast response and low noise. Similarly, lithium niobate is an important platform for integrated optics given its high second-order nonlinearity, used for high-speed electro-optic modulation and polarization conversion, as well as frequency conversion and sources of quantum light. Combining these technologies addresses the requirements for a single platform capable of generating, manipulating and measuring quantum light in many degrees of freedom, in a compact and potentially scalable manner. We will report on progress integrating tungsten transition-edge sensors (TESs) and amorphous tungsten silicide superconducting nanowire single-photon detectors (SNSPDs) on titanium in-diffused lithium niobate waveguides. The travelling-wave design couples the evanescent field from the waveguides into the superconducting absorber. We will report on simulations and measurements of the absorption, which we can characterize at room temperature prior to cooling down the devices. Independently, we show how the detectors respond to flood illumination, normally incident on the devices, demonstrating their functionality. 7 pages, 4 figures |
| Databáze: | OpenAIRE |
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