RESEARCH

Superconducting quantum devices and circuits – Setting a number of world records, selected as the major breakthrough in the institute

Date:23-08-2017   |   【Print】 【close

  Successful complete the setup acceptance of the Center for Excellence in Superconducting Electronics, ranking second in the Ministry of Finance B special comprehensive performance evaluation. The "Superconducting quantum detection and application" is listed as one of the 60 breakthroughs of the institute expected to achieve innovation leap (Basic frontier and cross field). The Center for Excellence in Superconducting Electronics is steadily included in the four types of institutes of the Chinese Academy of Sciences, providing the core guarantee for the sustainable development.

  Multiple applications of quantum information set the world record. Superconducting nanowire single photon detection formed the core technology from material to the device and system integration, SNSPD device detection efficiency achieved 90%@1550nm, which continued to maintain the international leading position, making great achievements in the autonomous integration system in the field of quantum information applications with important international influence. Cooperate with USTC, high performance SNSPD devices have been successfully applied to quantum communication, quantum fingerprint and quantum teleportation, etc., in which, quantum teleportation between independent quantum sources with pre entanglement distribution was successfully implemented on the Hefei quantum metropolitan communication test network for the first time, laying a solid foundation for the construction of scalable quantum network in the future. 400 km anti-hacker attack quantum key distribution set the new world record of quantum cryptography. The research results were published in Nature Photonics, PRL, PRX and other internationally renowned journals, as the strong impetus to drive the scientific and technological progress of the quantum information and other areas in China. In cooperation with Shanghai Observatory, the 532nm wavelength device successfully achieved 3000km satellite laser ranging. The paper was published in Optics Express, as selected as the highlight article in the issue of OSA.

  Superconducting quantum interference devices (SQUID) has achieved breakthrough from the frontier to the device and system. Nb-based 3D nanoSQUID devices were prepared successfully for the first time in the world, achieving ideal Josephson effect, with the magnetic flux modulation depth up to 45.9%, and the paper was published in the Nano Letters. The established first multi-channel, ultra-high efficiency spin-independent photoelectron spectrometer with independent intellectual property rights based on spin-exchange interaction enables 6786 multi-channel measurements with measurement efficiency 540,000 times higher than the current commercial spectrometer. The research results were published in the PRL. The fully independent SQUID devices have filled the gaps in the country with international advanced performance. Total tensor project flight test was successfully completed, obtaining the SQUID superconducting aviation total tensor magnetic gradient measurements for the first time domestically.

  SiPME2 characterization platform construction made significant progress. The two lines of light glared smoothly and entered into the total integration stage, which was expected to be put into commissioning test in 2017. Systematically integrate the MBE/Laser MBE and the ARPES, STM/STS, AP-PES and AP-PIPOS for the first time in the world, and make full use of the latest research results at home and abroad in the material controlled growth, electronic state structure research and advanced light source, to achieve the material measurement in the high accuracy in situ and near service state. The capability and practicality of the integrated platform will be far greater than that of the independent systems and the simple combination of the independent systems, which is of broad application prospects in the field of energy and environment materials and basic research. The platform will be the most integrated electronic structure research platform with the best comprehensive performance in the world, which can provide strong basic open research tools for the development from "Material observation science" to "Material control science".

  "Superconducting quantum device flexible pilot platform" project settled in Jiading, as a key project in the construction of Zhangjiang Jiading Park Emerging Industry Development Demonstration Area. It will promote the formation of Jiading centered superconducting quantum information technology source base, product manufacturing base and industrial incubator base in our country.