搜索结果: 76-90 共查到“国际动态 量子力学”相关记录107条 . 查询时间(4.091 秒)
Physicists in Japan have created the first 2D "heavy-fermion" material – providing the best evidence yet that heavy fermions undergo a quantum phase transition. The material was made using molecular b...
A new optical clock that is twice as accurate as any other has been unveiled by physicists in the US. The clock, which is based on a single aluminium ion, could remain accurate to within one second ov...
From thunderous mountain landscapes viewed from above to the erratic trajectories of Brownian motion, fractal patterns exist at many scales in nature. Physicists believe that fractals also exist in th...
Physicists in Canada and Australia have shown that nature exploits quantum mechanics to make photosynthesis more efficient. By probing light-harvesting proteins within algae using laser beams, the res...
Everlasting Quantum Wave: NIST Physicists Predict New Form of Soliton in Ultracold Gases（图）
Quantum Wave NIST Physicists Predict Soliton Ultracold Gases
2009/12/23
Solitary waves that run a long distance without losing their shape or dying out are a special class of waves called solitons. These everlasting waves are exotic enough, but theoreticians at the Joint ...
Physicists in France have come up with a new way of using bouncing ultracold atoms to measure the acceleration due to gravity. The technique involves firing vertical laser pulses at a collection of fr...
Quantum processor executes 160 different operations（图）
quantum processor 160 different operations quantum mechanics
2009/11/24
Physicists in the US have used two trapped atomic ions to create the first multiple-qubit programmable quantum computer. The device can be controlled to perform at least 160 different quantum computin...
UQ's School of Mathematics and Physics has strengthened its bonds with Canada's Perimeter Institute for Theoretical Physics (PI). UQ Physics has recently signed an agreement with the PI to strengthen ...
Two UQ physicists have taken to the big screen to explain how the weird and wonderful world of quantum principles is being tamed to advance our future technologies.Professor Gerard Milburn and Profess...
In quantum mechanics, Heisenberg's uncertainty principle says that these initial details – say, the position and momentum of a particle – cannot both be defined precisely. This inherent property has l...
In 1935 Erwin Schrödinger devised his famous thought experiment – in which a cat is both alive and dead at the same time – to highlight the paradoxical nature of quantum mechanics. Now, a group o...
量子力学揭示时间为何只“前进”不“后退”
量子力学 时间
2009/9/8
据英国《新科学家》杂志报道，没有一项物理学基本定律指出时间应该只“前进”而不“后退”，但我们却从未见识过时间逆转的现象，类似破裂的鸡蛋突然间重新复原，温水中形成冰块这样的事情不过是科幻影片中的情节。一项新研究显示，时间箭头是量子力学“健忘症”的一种结果，这种“健忘症”擦除了时间逆转留下的所有痕迹。
A scheme to couple the motion of a single atom with a crystal membrane could enable quantum-mechanical effects to be seen on a larger scale than ever before. The idea, which has been proposed by resea...
《科学》：“量子漫步”从理论变为现实（图）
量子漫步 理论
2009/7/14
你扔出一枚硬币，硬币要么正面朝上，要么背面朝上。但是在微观情况下，事情并非完全那么确定。如果你扔出的是一枚“原子”硬币，那么你得到的可能是一种正面和反面的叠加态。但是，这样的情况只是发生在你不在观察硬币的时候。如果你去观察，呈现在你眼前的可以是正面也可以是反面，随你喜欢而定。如果你像抛硬币一样扔出一个量子粒子，你就会看到不同寻常的效应。德国波恩大学的物理学家首次在铯原子实验中展示了这种效应。他们的...
《新物理学期刊》：世界最大量子密钥分布网络建成
世界 最大量子密钥 分布网络
2009/7/9
欧洲研究人员经共同协作联合建造了世界最大的量子密钥分布网络，在41个研究所和业界机构的努力下，他们成功地实现了将安全量子加密信息在一个8节点Mesh网络上传送。