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IBM 计划于2029年前打造容错量子计算机
news flash· 2025-06-10 10:15
Core Insights - IBM plans to deliver the world's first large-scale fault-tolerant quantum computer at its new quantum data center in Poughkeepsie, New York, by 2029 [1] - The computing power of IBM's quantum computer "Starling" is expected to exceed current quantum computers by more than 20,000 times [1] - Users will be able to fully explore quantum states, overcoming the limitations of existing quantum computers that can only access a limited range of quantum features [1]
室温下超荧光现象形成机制阐明 为实用量子计算奠定材料基础
Ke Ji Ri Bao· 2025-06-02 23:33
Group 1 - The core research led by North Carolina State University focuses on achieving superluminescence at room temperature, which is crucial for the development of quantum computing without the need for extremely low temperatures [1][2] - The study provides both experimental and theoretical foundations for generating macroscopic quantum coherence at room temperature, explaining why certain materials perform better in achieving exotic quantum states under environmental conditions [1][2] - The research highlights the phenomenon of "macroscopic quantum phase transition," where a large number of quantum particles synchronize to form a collective quantum state, akin to schools of fish swimming together or fireflies flashing in unison [1] Group 2 - The study reveals the specific mechanism behind the "thermal insulation" effect in hybrid perovskite materials, where excitons aggregate to form "soliton" structures when stimulated by laser [2] - The transition of polaritons from a disordered state to an ordered structure is directly observed, marking a significant advancement in understanding the formation of macroscopic quantum states [2] - This understanding allows for the design of high-temperature quantum materials, overcoming the limitations imposed by the need for low-temperature environments in current quantum technologies [2]
新方法首次验证天然材料具有拓扑超导性 或加速容错型量子计算机的到来
Ke Ji Ri Bao· 2025-06-02 23:30
Core Insights - A collaboration between the University of Oxford and University College Cork has successfully demonstrated that the natural material Uranium Telluride (UTe2) possesses intrinsic topological superconductivity, which is crucial for the development of large-scale, fault-tolerant quantum computers [1][2] - Topological superconductors are considered ideal materials to overcome the challenges of quantum decoherence, as they can host new quantum particles called Majorana fermions, which theoretically can store quantum information stably [1] - The research team utilized a novel technique called "Andreev STM" to confirm the topological superconducting state of UTe2, marking a significant advancement in experimental methods for detecting topological surface states [1] Material Significance - UTe2 has been recognized as a candidate for intrinsic topological superconductivity since its discovery in 2019, but this is the first experimental verification of its properties [1][2] - Although Majorana fermions exist in pairs within UTe2 and cannot be isolated, the research provides a method to determine the suitability of materials for quantum computing applications [2] - This study suggests that simpler crystal materials could replace complex and expensive artificial circuits in the synthesis of topological superconductors, offering a more cost-effective solution for next-generation quantum computing [2]
新方法首次验证天然材料具有拓扑超导性
news flash· 2025-06-02 22:23
Core Insights - A new powerful technique has been developed by institutions including the University of Oxford and University College Cork, which has experimentally confirmed that the natural material uranium telluride (UTe2) possesses intrinsic topological superconductivity [1] Group 1 - The discovery of topological superconductivity in UTe2 is significant for the selection of core materials for large-scale, fault-tolerant quantum computers [1]
超导电路新设计有望提升量子处理器速度
Ke Ji Ri Bao· 2025-05-05 23:18
Core Insights - A new superconducting circuit design by a team from MIT is expected to increase the speed of quantum processors by 10 times, marking the strongest nonlinear light-matter coupling achieved in quantum systems to date [1] - The efficiency of quantum computing relies on the speed of complex calculations and the rapid reading of results, which is determined by the coupling strength between photons and artificial atoms [1] - The newly developed "four-component coupler" enhances the interaction between qubits and light signals, facilitating efficient information exchange [1][2] Group 1 - The superconducting circuit design demonstrates a coupling strength that is an order of magnitude higher than previously achieved, enabling quantum operations and readings to be completed in a few nanoseconds [1][2] - The research team began developing a specialized photon detector in 2019 to enhance quantum information processing capabilities [1] - The four-component coupler acts as a "translator" that improves the dialogue between light and matter, making it more efficient and precise [1] Group 2 - In experiments, the coupler was connected to two superconducting qubits, with one functioning as a resonator to detect the state of the qubit and the other as an artificial atom to store quantum information [2] - The nonlinear light-matter coupling strength produced by the four-component coupler is significantly higher than previous implementations, leading to faster reading speeds and reduced errors [2] - This research contributes to the long-term goal of building fault-tolerant quantum computers, which is crucial for practical, large-scale quantum computing [2]
“不将小米当对手”?保时捷中国回应;在中国建合资公司?英伟达:毫无依据;沃尔玛通知中国供应商恢复出货|大公司动态
Di Yi Cai Jing· 2025-04-29 12:11
第一财经每日精选最热门大公司动态,点击「听新闻」,一键收听。 【今日推荐】 保时捷中国称"不将小米当对手"是误读 近日,有消息称,保时捷CEO奥博穆在2025上海车展期间表示,"保时捷考虑在华停售电动汽车""保时 捷不将小米当对手"。4月29日,保时捷中国回应称,上述消息均是误读。"保时捷在中国仍将坚定不移 地推进电动化进程,也将加快提供产品数智化本土解决方案。我们下一款纯电车型将是全新的纯电动 Cayenne。"(中新经纬) 英伟达要在中国建合资公司?回应称毫无依据 4月29日,有消息援引报道称,在美国限制英伟达H20对华出口之际,英伟达为了维护其在中国市场的 CUDA生态地位,正在低调地启动"B计划",即考虑在中国设立合资企业,并可能为未来将中国业务单 独拆分做准备。对此,英伟达回应称:"这些说法没有任何依据。将毫无根据的主张和猜测作为事实发 表是不负责任的。" 沃尔玛通知中国供应商恢复出货 自美国总统特朗普所谓"对等关税"以来,全球零售巨头沃尔玛的态度出现戏剧性变化。从最初要求中国 供应商自行承担高额关税,到短短20天后迫于库存压力选择自行吸收关税、恢复中国进货。据《南华早 报》报道,江苏省和浙江省的部 ...