Hard-Kr Exclusive: Tsinghua-affiliated Quantum Computing Enterprise Secures Hundreds of Millions in Funding Led by Legend Capital, Breaking World Record for Atom Trapping

Hard Krypton learned that Liangyi Vientiane (Beijing) Technology Co., Ltd. (hereinafter referred to as "Liangyi Vientiane"), a quantum computing enterprise, has recently completed a Series A+ financing of several hundred million yuan, led by Legend Capital, with participation from Jiwu Venture Capital, Shanghai Tech-Capital, CITIC Securities Investment, and Begonia Fund, while existing shareholders Shunwei Capital and iFLYTEK made additional investments. The proceeds from this round will be used for technology R&D, team expansion, and full-system construction.

Liangyi Vientiane was founded in 2024, spun off from the Atomic Quantum Computing Research Team of Tsinghua University, which has been conducting research on cold atom physics since around 2000.

Liangyi Vientiane and the Atomic Quantum Computing research team of Tsinghua University jointly established the "Beijing Key Laboratory of Cold Atom Quantum Computing". The university's research team focuses on cutting-edge fundamental research, while Liangyi Vientiane takes full responsibility for engineering implementation and full-stack ecosystem development.

As a future industry explicitly prioritized for development in the 15th Five-Year Plan, quantum computing is gaining increasing momentum. Currently, fierce global competition is underway across multiple mainstream technical routes including superconductivity, ion trap, and atom.

Liangyi Vientiane is a representative enterprise on the atomic technology route. In terms of the number of trapped atoms, the team has achieved the trapping of 11,000 atoms, breaking the previous world record of 6,100 atoms held by the California Institute of Technology, and setting a new world record in this single metric. "Our goal is to compete head-to-head with top international teams from institutions such as Caltech, Harvard, and MIT," Chairman Shi Qi told Hard Krypton.

Liangyi Vientiane's first-generation atomic quantum computer, built on its self-developed optical tweezer trapped ultracold rubidium atom array platform, will construct a defect-free programmable atom array of hundreds to thousands of qubits through dynamic rearrangement technology, supported by self-developed high-speed FPGA rearrangement, high-fidelity Rydberg excitation, and fully connected two-qubit gate control. Its single- and two-qubit gate fidelities match the best global levels, and it boasts an internationally leading quantum error correction decoder adapted to atomic platforms.

In addition, the company has independently developed China's first miniaturized and integrated atomic beam generator, the "high-vacuum compatible integrated atomic source", which can provide a stable atomic beam for cold atom instruments and equipment such as quantum computing platforms. Its self-developed optical metasurface generates an optical tweezer array composed of large-scale, high-quality optical tweezers, providing innovative technical support for trapping tens of thousands of atomic qubits.

Apart from the aforementioned products, according to Shi Qi, Liangyi Vientiane has also independently developed a series of products including an optical tweezer dynamic feedback system, a DDS integrated controller, an analog signal generator, and a digital signal generator, to form an equipment matrix for atomic quantum computing electrical measurement and control. Among them, the fast rearrangement architecture of the optical tweezer feedback control system was cited in a major 2025 *Nature* paper published by the Harvard-MIT team. This series of products can be extended to application scenarios such as quantum technology, precision industrial control, and information and communications.

In terms of industrial layout, in March this year, Liangyi Vientiane and iFLYTEK jointly established Liangzhi Kaiwu Technology Co., Ltd. The two parties will leverage their respective strengths in quantum technology and artificial intelligence to deeply integrate algorithm research and technological innovation in these two fields. Another wholly-owned subsidiary, Tiance Liangwu Technology Co., Ltd., focuses on the independent R&D of measurement and control systems, quantum cloud platforms, and quantum computing software, providing corresponding supporting software for the parent company's full-system hardware. The Joint Research Center of Tianjin University's State Key Laboratory of Precision Measuring Technology and Instruments - Liangyi Vientiane (Quantum Technology) will carry out collaborative R&D in fields such as optoelectronics, laser technology, and optical microfabrication.

The following is an excerpt from Hard Krypton's interview with Shi Qi, Chairman of Liangyi Vientiane:

Hard Krypton: With the current fierce competition in quantum computing, what are Liangyi Vientiane's core advantages?

Shi Qi: Our most core advantage is that we have built a two-way, full-cycle mechanism connecting "fundamental research to future industry" over the past two years. This is different from typical startup projects spun out of universities: the university's research team is responsible for cutting-edge technological breakthroughs and fundamental research innovation, while the company's engineering team focuses on market-oriented engineering and practical product development, with each side leveraging its strengths and fulfilling its respective responsibilities. For example, the theoretical verification for our record-breaking 10,000-atom trapping was entirely completed in the university's research laboratory, and after the feasibility was fully demonstrated, the engineering team joined in to conduct collaborative R&D.

Quantum technology is a long-term field with an extremely complex scientific system, and comprehensive leadership or transcendence cannot be achieved by merely solving isolated individual problems. What our team is most capable of impressing investors, and what constitutes our greatest advantage, is that we have all-around talent reserves, strategic layouts, and comprehensive capabilities, which places us in an excellent position for international competition.

Hard Krypton: How is the progress of Liangyi Vientiane's self-developed first-generation full system?

Shi Qi: We have completed the verification of the first-generation prototype system in the Tsinghua laboratory, successfully running through all the core elements and processes required to build the first full system, including atom trapping, atom array rearrangement, Rydberg excitation, and single- and two-qubit gate fidelities. On this basis, after Liangyi Vientiane was established in 2024, we started the construction of the quantum computer in the company's laboratory, and the development of the full system is currently progressing very smoothly.

Hard Krypton: Does the engineering team usually engage in "value realization along the development path" work, and what is the current specific commercialization progress?

Shi Qi: For a team focused on developing full systems, "value realization along the development path" is an indispensable choice and layout that must be faced in the commercialization process. The full system is our core driving force, but the process of developing it will continuously generate a large number of new demands.

Over the past two years, in addition to developing the first-generation full system, we have also independently developed nearly 10 component products. Developing these technologically leading components has, on the one hand, tested and verified the team's hands-on and engineering capabilities, and on the other hand, these products can not only be used to build our own atomic quantum computing full systems, but also empower broader industry sectors such as precision measurement, information and communications, and industrial control.

In terms of specific commercialization progress, our upstream products such as the feedback system, atomic source, and optical metasurface are all ready, and we have started receiving orders, with some products already sold. Our first clear group of users are researchers from universities and research institutes. Especially during the capital increase round in the past one or two months, we have already generated some revenue, achieving short-term returns from our "value realization along the development path" efforts.

Hard Krypton: Based on your observations, what will be the most critical point for a quantum computing enterprise to stand out in the future?

Shi Qi: I believe it ultimately comes down to R&D and technical strength. Quantum computing has an extremely high entry barrier, requiring the team to possess comprehensive and all-around capabilities.

Returning to the core technical issues, current quantum computers are still in a stage with relatively high error rates. To achieve practical and widespread application, several key technical indicators are indispensable: first, the scale of qubits that can be trapped and controlled must be increased; second, powerful control capabilities must be established; third, calculation accuracy and error correction capabilities must be improved. Only with these can we successfully develop a truly usable quantum computer. In addition, precisely because quantum computing is a long-term endeavor, the team must possess both solid scientific research capabilities and efficient engineering capabilities.