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National Team Partners with Industrial Capital to Complete Angel Round Investment in Quantum Industry - 36 Kr
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National Team Partners with Industrial Capital to Complete Angel Round Investment in Quantum Industry - 36 Kr

The national team has joined forces with industrial capital to make an angel round investment in the quantum industry.投资界2026-09-07 10:38The national team has made a rare investment in the angel round of the superconducting quantum field.Still remains red-hot. On September 7, Shanghai JuLiang PhotonQ, a superconducting quantum computing company, announced the completion of a RMB 300 million Angel+ round of financing. This round was led by China New Venture Capital, with co-investments from Fosun RZ Capital, Xingxiang Capital, Dinghe Gaoda, Jinyumaowu, Yunshi Capital, Junchenda Capital, GLP Hidden Hill Capital, Blue Lake Capital, Ruoqing Capital and other institutions. Existing shareholder Junshan Capital made an oversubscribed follow-on investment. Yirong Capital served as the long-term lead financial advisor. Only more than 3 months have passed since its previous round of financing. So far, the total financing of JuLiang PhotonQ's angel rounds has reached RMB 500 million. It is learned from Pedaily that this round of financing was also oversubscribed, and many institutions took the initiative to contact the company within a short period of time. JuLiang PhotonQ was founded in 2025. Its founder, Yu Wenlong, is a post-85s returned overseas PhD. After graduating from the University of Science and Technology of China with a bachelor's degree in physics, he went to the United States to pursue his PhD in physics at Georgia Tech. After graduation, he joined the Quantum Phenomenon Division of the US National Laboratory, and has long been engaged in the engineering of superconducting quantum devices and quantum computing. At the beginning of its establishment, he gathered a group of overseas technical talents with similar experiences, committed to promoting superconducting quantum computing to real industrialization. All eyes are waiting for this leap of quantum computing from the cutting edge of science to the depth of the industry. RMB 500 Million in Angel Rounds Central

Sep 7, 2026

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A Representation-Theoretic Framework for Characterizing Barren Plateausquantum-computing

A Representation-Theoretic Framework for Characterizing Barren Plateaus

--> Quantum Physics arXiv:2609.04462 (quant-ph) [Submitted on 3 Sep 2026] Title:A Representation-Theoretic Framework for Characterizing Barren Plateaus Authors:Pedro Alcântara, Leandro Morais, Rafael Chaves View a PDF of the paper titled A Representation-Theoretic Framework for Characterizing Barren Plateaus, by Pedro Alc\^antara and 2 other authors View PDF HTML (experimental) Abstract:The scalability of variational quantum algorithms is fundamentally limited by the barren plateau effect, where the cost-function variance vanishes with system size, rendering optimization impractical. Recent Lie-algebraic approaches for deep parameterized have enabled a unified analytical understanding of this challenge but require either the initial state or the measurement observable to belong to the dynamical Lie algebra generated by the circuit. Here, we introduce a representation-theoretic framework under $2$-design hypothesis showing that variational quantum landscapes admit a natural decomposition into irreducible representation channels. This yields exact expressions and analytical bounds for the cost-function variance applicable to arbitrary initial states and observables, with previous Lie-algebraic results emerging as a special case. We illustrate the framework by analyzing the energy landscape of the one-dimensional ANNNI model for several circuit architectures, revealing trainability regimes inaccessible to existing methods. Our results establish a general representation-theoretic framework for analyzing variational quantum landscapes, substantially extending the analytical theory of barren plateaus. Comments: Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2609.04462 [quant-ph]   (or arXiv:2609.04462v1 [quant-ph] for this version)   https://doi.org/10.48550/arXiv.2609.04462 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Leandro Morais [view email] [v1] Thu, 3 Sep 2026 20:44:53 UTC (1,288 KB) Full-text link

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State-Based Quantum Operations: Chameleon Gatesquantum-computing

State-Based Quantum Operations: Chameleon Gates

--> Quantum Physics arXiv:2609.04506 (quant-ph) [Submitted on 3 Sep 2026] Title:State-Based Quantum Operations: Chameleon Gates Authors:S. Alipour, A. T. Rezakhani View a PDF of the paper titled State-Based Quantum Operations: Chameleon Gates, by S. Alipour and A. T. Rezakhani View PDF HTML (experimental) Abstract:We introduce chameleon gates as a natural generalization of conventional quantum controlled-gates. Chameleon gates are state-based quantum controlled-operations that retain standard elements such as control and target systems, while introducing a new feature: the quantum knob. This knob is a quantum signal (state) that determines the operation performed by the gate. Consequently, the action and form of a chameleon gate depend dynamically on the quantum knob, allowing the gate to adapt its operation and implement transformations that are not necessarily unitary. This shapeshifting property is in stark contrast to conventional quantum controlled-gates, whose actions are fixed and cannot be modified. We also propose how chameleon gates can be realized using conventional quantum gates available in current quantum technologies. We then employ chameleon gates as a useful building block within the recently proposed state-based quantum computation (SBQC) framework. Using this approach, we demonstrate the simulation of state-dependent (nonlinear) quantum evolutions. Comments: Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2609.04506 [quant-ph]   (or arXiv:2609.04506v1 [quant-ph] for this version)   https://doi.org/10.48550/arXiv.2609.04506 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Sahar Alipour [view email] [v1] Thu, 3 Sep 2026 21:50:18 UTC (277 KB) Full-text links: Access Paper: View a PDF of the paper titled State-Based Quantum Operations: Chameleon Gates, by S. Alipour and A. T. RezakhaniView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph < prev  

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