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“量子优势”首获实验证明
Ke Ji Ri Bao· 2025-09-28 22:55
Core Insights - An international collaborative research team from Denmark, the United States, Canada, and South Korea has experimentally demonstrated the capability of quantum technology to significantly outperform classical methods, achieving a task completion time reduction from 20 million years to just 15 minutes, thereby realizing "quantum advantage" [1][2]. Group 1: Research Findings - The research addresses a common challenge in efficiently understanding complex and noisy physical systems, where traditional methods require extensive measurements to infer system behavior, which becomes increasingly difficult for quantum systems due to measurement disturbances and exponential growth in required measurements as system size increases [1]. - The Danish technical university team introduced a unique quantum resource: entangled light, which allows for simultaneous extraction of more effective information through joint measurements, significantly reducing measurement ambiguity [2]. Group 2: Implications and Applications - The results indicate that the efficiency improvement is not due to more precise equipment but rather the inherent quantum advantage of the measurement method itself, achieved in a realistic lossy system rather than an idealized lossless environment [2]. - This breakthrough not only highlights the speed enhancement but also showcases the potential applications of quantum technology in fields such as sensing, system identification, and machine learning, paving new paths for quantum metrology and sensing [2][3]. - The transition of quantum advantage from theoretical discussions to practical demonstrations suggests a promising future for the development of high-sensitivity quantum sensors and innovative solutions in big data analysis and machine learning, significantly reducing energy consumption and time costs [3].
“量子霸权时代”逼近 科技巨头与投资机构加码押注
Zhi Tong Cai Jing· 2025-07-25 07:59
Core Viewpoint - The quantum computing industry is on the brink of a significant breakthrough, with the "quantum supremacy era" expected to arrive in the coming years, promising revolutionary applications across various scientific fields [1][6]. Group 1: Quantum Supremacy - Quantum supremacy refers to the milestone where quantum processors can perform specific tasks that classical supercomputers cannot achieve in a reasonable timeframe, marking a historic moment in computing [1][2]. - The concept was first introduced by physicist John Preskill in 2012, emphasizing the ability of quantum machines to outperform classical machines [1][2]. Group 2: Key Players in Quantum Computing - IonQ, along with other U.S. leaders like Rigetti Computing, D-Wave Quantum, and Quantum Computing, is developing advanced quantum computers and networks, each focusing on different technological approaches [3][6]. - IonQ specializes in ion trap quantum computing, while Rigetti focuses on superconducting chip scalability and quantum hybrid cloud, D-Wave on quantum annealing, and Quantum Computing on room-temperature photonics [3]. Group 3: Industry Investment and Growth - Major tech companies such as Google, Microsoft, Amazon, and IBM are investing hundreds of millions into quantum computing, indicating a growing interest from Wall Street investors [4][5]. - Nvidia's CEO Jensen Huang expressed optimism about the rapid advancement of quantum computing, predicting a tenfold increase in logical qubits every five years [4][5]. Group 4: Potential Applications - Quantum computing is expected to bring significant breakthroughs in fields like medicine and pharmaceuticals, with IonQ collaborating with Nvidia, Amazon AWS, and AstraZeneca on drug discovery projects [6]. - The technology aims to solve complex problems that classical computers struggle with, paving the way for practical applications in various industries [4][6]. Group 5: Market Outlook - Cantor Fitzgerald recently initiated coverage on leading quantum computing companies, rating IonQ, Rigetti, and D-Wave with "buy" ratings, highlighting the immense economic potential of quantum computing [7]. - The rapid development in quantum technologies, including ion trap and quantum annealing advancements, suggests a paradigm shift towards practical quantum applications [7][8].
Rigetti Computing Stock Down 37% As Nvidia CEO Sees ‘Inflection Point'
Forbes· 2025-06-12 15:40
Core Insights - Nvidia CEO Jensen Huang believes quantum computing is at an "inflection point," indicating significant advancements are imminent in the coming years [3][9] - Rigetti Computing's stock has experienced volatility, with a 970% increase since June 2024 but a 37% decline in 2025, raising questions about its investment potential [2][5][16] - The quantum computing industry is gaining investor attention, with stocks showing initial gains before reversing direction [3][8] Company Performance - Rigetti Computing's first quarter 2025 results were disappointing, with revenues of $1.5 million falling over 42% short of expectations and earnings per share missing by 84% [14] - The company reported a net profit of $42.6 million, primarily due to non-cash gains, while facing a $21.6 million operating loss [15] - Despite recent struggles, Rigetti has raised $350 million through stock sales, increasing its cash balance to approximately $570 million, which may support its operations in the coming years [16] Industry Trends - Quantum computing utilizes super-cooled metal to perform more calculations per circuit than classical computing, attracting significant investor interest [3][10] - Major tech companies like IBM and Google are making strides in quantum computing, with IBM planning to launch a large-scale quantum computer by 2029 [11] - Experts suggest that breakthroughs in error correction algorithms and hardware improvements will enhance the commercial viability of quantum computing [17][19] Future Outlook - Rigetti's CEO anticipates that the commercial value of quantum computing will materialize in four to five years, as the market is expected to grow significantly [6] - The future of quantum computing may hinge on solving hardware and algorithm challenges to achieve quantum advantage over classical computing [19][20] - Collaboration between universities and tech companies is essential for building ecosystems that will drive advancements in quantum computing [18]