News on China's scientific and technological development.

Discussion in 'Members' Club Room' started by Quickie, Dec 9, 2008.

  1. N00813
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    N00813 Junior Member
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    A step towards quantum computing:
    https://science.sciencemag.org/content/365/6453/574

    Entanglement goes large
    The success of quantum computing relies on the ability to entangle large-scale systems. Various platforms are being pursued, with architectures based on superconducting qubits and trapped atoms being the most advanced. By entangling up to 20 qubits, Omran et al. and Song et al.—working with Rydberg atom qubits and superconducting qubits, respectively—demonstrate how far these platforms have reached. The demonstrated controllable generation and detection of entanglement on such quantum systems is promising for the development of large-scale quantum processors.


    Generation of multicomponent atomic Schrödinger cat states of up to 20 qubits
    1. Chao Song1,*,
    2. Kai Xu2,3,*,
    3. Hekang Li2,*,
    4. Yu-Ran Zhang2,4,
    5. Xu Zhang1,
    6. Wuxin Liu1,
    7. Qiujiang Guo1,
    8. Zhen Wang1,
    9. Wenhui Ren1,
    10. Jie Hao5,
    11. Hui Feng5,
    12. Heng Fan2,3,,
    13. Dongning Zheng2,3,,
    14. Da-Wei Wang1,3,
    15. H. Wang1,6,,
    16. Shi-Yao Zhu1,6
    Affliations:
    1. Interdisciplinary Center for Quantum Information, State Key Laboratory of Modern Optical Instrumentation, and Zhejiang Province Key Laboratory of Quantum Technology and Device, Department of Physics, Zhejiang University, Hangzhou 310027, China.
    2. Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
    3. CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing 100190, China.
    4. Beijing Computational Science Research Center, Beijing 100094, China.
    5. Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China.
    6. Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.

    Science 09 Aug 2019:
    Vol. 365, Issue 6453, pp. 574-577
    DOI: 10.1126/science.aay0600


    Abstract
    Multipartite entangled states are crucial for numerous applications in quantum information science. However, the generation and verification of multipartite entanglement on fully controllable and scalable quantum platforms remains an outstanding challenge. We report the deterministic generation of an 18-qubit Greenberger-Horne-Zeilinger (GHZ) state and multicomponent atomic Schrödinger cat states of up to 20 qubits on a quantum processor, which features 20 superconducting qubits, also referred to as artificial atoms, interconnected by a bus resonator. By engineering a one-axis twisting Hamiltonian, the system of qubits, once initialized, coherently evolves to multicomponent atomic Schrödinger cat states—that is, superpositions of atomic coherent states including the GHZ state—at specific time intervals as expected. Our approach on a solid-state platform should not only stimulate interest in exploring the fundamental physics of quantum many-body systems, but also enable the development of applications in practical quantum metrology and quantum information processing.
     
  2. Jura
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    Jura General

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    now I read
    12:57, 17-Aug-2019
    China's commercial carrier rocket Smart Dragon-1 makes maiden flight https://news.cgtn.com/news/2019-08-...n-1-makes-maiden-flight-JebiTUjgQw/index.html

     
  3. antiterror13
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    antiterror13 Colonel

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    Go Trump 2020 .... go go
     
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  4. N00813
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    N00813 Junior Member
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    https://www.anandtech.com/show/1474...production-to-contribute-revenue-by-late-2019

    SMIC: 14nm FinFET in Risk Production; China's First FinFET Line To Contribute Revenue by Late 2019
    by Anton Shilov on August 16, 2019 3:00 PM EST

    SMIC, the largest contract maker of semiconductors in China, announced this month that it would start commercial production of chips using its 14 nm FinFET manufacturing technology by the end of the year. This is the first FinFET manufacturing line in China, making it a notable development for a country that already houses a significant number of fabs, as the world's leading-edge manufacturers never installed FinFET technology in China for geopolitical and IP reasons. SMIC in turn seems to expect a rather rapid ramp of its 14 nm node, as it anticipates the new manufacturing line will meaningfully contribute to its revenue before the end of the year.

    According to SMIC, their 14 nm FinFET manufacturing technology was developed entirely in-house and is expected to significantly increase transistor density, increase performance, and lower power consumption of chips when compared to devices made using the company’s 28 nm process that relies on planar transistors. Earlier this year it was expected that SMIC would start production of 14 nm chips already in the first half of 2019, so the firm seems to be a little behind the schedule. Nonetheless, an in-house FinFET process technology is quite a breakthrough for a relatively small company that puts it into a club with just five other foundries with FinFET technologies.

    One interesting thing that SMIC said about its 14 nm FinFET volume ramp is that it expects the process to have a significant revenue contribution already by the end of the year. Meanwhile, keeping in mind that right now SMIC only has two relatively small 300-mm HVM fabs (which are currently used for 28 nm – 65 nm nodes) that are heavily utilized generating 40 ~ 49% of the company’s revenue (in Q1/Q2 2019), it is difficult to imagine SMIC making loads of 14 nm chips in 2019.

    Overview of SMIC's Fabs
    Process Technologies Capacity
    Wafer Starts per Month Location
    BJ 200mm 90 nm - 150 nm 50,000 Beijing, China
    300mm 28 nm - 65 nm 35,000
    SH 200 mm 90 nm - 350 nm 120,000 Shanghai ,China
    300 mm 28 nm - 65 nm 20,000
    SZ 200 mm 90 nm - 350 nm 60,000 Shenzhen, China
    300 mm 28 nm - 65 m 3,000
    TJ 200 mm 90 nm - 350 nm 50,000 Tianjin, China
    LF 200 mm 90 nm - 180 nm 50,000 Avezzano, Italy
    Earlier this year the company completed construction of its $10 billion SMIC South FinFET Fab, which will be used for its leading-edge manufacturing technologies and began moving in the equipment. Once the fab is ready for commercial operations, SMIC will be able to considerably increase production of chips using its 14 nm and then 12 nm FinFET fabrication technologies.

    [​IMG]

    SMIC’s longer-term plans include 10 nm and 7 nm manufacturing processes. The latter is expected to require usage of extreme ultraviolet lithography tools, so last year SMIC acquired an EUV step-and-scan system from ASML for $120 million, which was to be delivered in 2019.

    Sources: SMIC, DigiTimes
     
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  5. Jura
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    Jura General

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    Yesterday at 8:10 AM
    related: https://twitter.com/HenriKenhmann/status/1162745521666084864
    East Pendulum
    @HenriKenhmann

    ·
    15h
    Le petit lanceur "Smart Dragon 1" (捷龙一号) et son TEL lors du lancement d'aujourd'hui. Son constructeur CASC CALT vise un prix de mise en orbite de 30,000 USD/kg qui viendra concurrencer CASIC et les autres startups chinoises comme iSpace, LandSpace, OneSpace, LinkSpace...etc.
    Translated from French by
    The little "Smart Dragon 1" launcher (捷 龙 一号) and his TEL at today's launch. Its manufacturer CASC CALT is targeting a price of orbiting 30,000 USD / kg that will compete with CASIC and other Chinese startups like iSpace, LandSpace, OneSpace, LinkSpace ... etc.
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
     
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  6. Quickie
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    Quickie Major

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    One would think that it's common sense to have a dedicated place to test self-driving cars for safety reasons. This is the first that I've come across. Ghost cities would be a good place to test the streets around city blocks.

    https://www.scmp.com/tech/article/3023362/china-dedicates-mountain-highway-test-self-driving-cars




    China dedicates a mountain highway to test self-driving cars
    • Equipment such as road sensors, laser and microwave radars, panoramic video surveillance, were tested at the highway
    • China is targeting for smart vehicles to account for half of all new cars sold at home by 2020

    China has dedicated a mountainous stretch of highway in eastern Shandong province for testing connected, self-driving vehicles as part of the country’s efforts to challenge the US in autonomous driving technology.

    The local Qilu Transportation Development Group earmarked a 26-kilometre-long (16 miles) highway for autonomous driving and vehicle-to-infrastructure communication, in cooperation with partners including Chinese telecom gear provider Huawei Technologies and China Mobile, one of the country’s largest telecommunications network operators, according to the official Xinhua News Agency.

    The test section is a typical mountain motorway with three tunnels, a bridge and three toll stations, providing different testing scenarios, according to the report. Equipment such as road sensors, laser and microwave radars, panoramic video surveillance, were tested, Xinhua said, in addition to weather monitoring and traffic signs that can communicate with vehicles.


    The project plans to build a world-class testing, research and development centre and incubator for driverless vehicles by 2023. In the coming five years, it will explore integrated innovative business models surrounding smart infrastructure, new energy, autonomous driving, logistics, tourism and more. It will also offer information to help set relevant standards on autonomous cars and smart transport.

    While Chinese self-driving vehicle players are still playing catch-up to their US peers in public road testing, China may provide a competitive advantage should it put its weight behind open-road testing given the country’s vast infrastructure construction.
     
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  7. t2contra
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    t2contra Major

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    Maybe stuntmen as well.:p
     
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  8. Quickie
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    Lol, actually I was thinking of automated self-moving objects, human figures, etc.
     
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  9. Jura
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    Jura General

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    Yesterday at 8:29 AM
    now a write-up (with pictures and footage) appeared, linked inside https://twitter.com/HenriKenhmann/status/1163485837054492672
    [Article] SD-1 : Quand le géant national vient concurrencer les startups
    Translated from French by
    [Article] SD-1: When the national giant comes to compete with startups
    [​IMG]
    SD-1 : Quand le géant national vient concurrencer les startups | East Pendulum
    Le constructeur des fusées Longue Marche a réussi le vol inaugural de son nouveau micro-lanceur SD-1, signe de son ambition portée sur le marché fleurissant des petits satellites en Chine.
     
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  10. Skywatcher
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    Skywatcher Senior Member

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    The problem with using a ghost city is that people moving into the ghost city will probably object to the self driving cars after the first few pedestrians get run down.
     
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