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Some classical computers have error correction built into their memories based on bits; quantum computers, to be workable in the future, will need error correction mechanisms, too, based on the vastly...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Does qubit connectivity impact quantum circuit complexity
量子比特连接 量子电路 复杂性
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2023/4/13
Some physical implementation schemes of quantum computing -- such as those based on superconducting qubits, quantum dots, and cold atoms -- can apply two-qubit gates only on certain pairs of qubits. O...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Equivalence Checking of Quantum Circuits by Nonlocality
量子电路 非局域 等价性检验
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2023/4/17
Suppose two quantum circuit chips are located at different places, for which we do not have any prior knowledge, and cannot see the internal structures either. In such a situation, a realistic and fun...
For the first time, researchers at MIT, Caltech, Harvard University, and elsewhere sent quantum information across a quantum system in what could be understood as traversing a wormhole. Though this ex...
2022 Bethe Lectures: Harnessing quantum matter for future technologies（图）
量子物质 电子相 查尔斯·凯恩 拓扑量子物质
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2023/5/19
Matter can arrange itself in ingenious ways; in addition to the solid, liquid and gas phases that are familiar in classical physics, electronic phases of matter -– some of them exotic and some useful ...
Harvard partners with Amazon Web Services in quantum internet push（图）
量子互联网 量子劳动力 纳米系统中心
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2023/6/25
Harvard University and Amazon Web Services (AWS) on Monday launched a strategic alliance to advance fundamental research and innovation in quantum networking.
Physicists harness quantum “time reversal” to measure vibrating atoms（图）
量子 时间反转 振动原子 原子钟 量子传感器
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2023/6/9
The quantum vibrations in atoms hold a miniature world of information. If scientists can accurately measure these atomic oscillations, and how they evolve over time, they can hone the precision of ato...
Editor's note: This article has been updated to clarify that the new study in Physical Review Letters focuses on the detection of Unruh effect on a single accelerated particle, and to note that other ...
A new language for quantum computing（图）
量子计算 新语言 编程语言 量子纠缠
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2023/6/20
Time crystals. Microwaves. Diamonds. What do these three disparate things have in common?
A crystal structure that combines a semiconductor and superconductor is a tantalizing prospect to create energy-efficient computers, or quantum computers, which leverage the unique quantum mechanical ...
Step in quest for quantum computing（图）
量子计算 可编程量子模拟器 量子自旋液体 奇异物质状态
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2023/6/21
In 1973, physicist Philip W. Anderson theorized the existence of a new state of matter that has been a major focus in the field, especially in the race for super-fast quantum computers.
Ateam of physicists from the Harvard-MIT Center for Ultracold Atoms and other universities has developed a special type of quantum computer known as a programmable quantum simulator capable of operati...
In 2016, physicist J.C. Séamus Davis discovered an elusive state of quantum matter in the cuprates, which are copper oxide materials laced with other atoms. That launched a new sub-field in the study ...
Algorithm breakthrough may lead to new applications for quantum computers（图）
Algorithm breakthrough new applications quantum computers
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2020/12/11
Researchers led by City College of New York physicist Pouyan Ghaemi report the development of a quantum algorithm with the potential to study a class of many-electron quantum systems using q...
Research reveals exotic quantum states in double-layer graphene（图）
exotic quantum states double-layer graphene
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2019/10/23
NSF-funded research by scientists at Brown and Columbia Universities has demonstrated the existence of previously unknown states of matter that arise in double-layer stacks of graphene, a two-dimensio...