科学与环境
Quantum skyrmions outlast entanglement, hinting at more resilient networks
来源: Phys.org - latest science and technology news stories · 发布于
Quantum networks could one day connect quantum computers into more powerful systems and enable new forms of secure communication. But a fundamental obstacle stands in the way: Quantum information is extraordinarily fragile, and the entanglement between particles of light on which
Quantum networks could one day connect quantum computers into more powerful systems and enable new forms of secure communication. But a fundamental obstacle stands in the way: Quantum information is extraordinarily fragile, and the entanglement between particles of light on which such networks would depend is easily disrupted.
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Grades are not comparable across schools in Sweden, says researcher
Grades from compulsory school determine which pupils are accepted into popular upper secondary programs. A new thesis from Uppsala University shows that pupils at for-profit independent schools have, on average, higher grades than would statistically be expected given their backg
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Attenborough-backed appeal secures £30m estate
The purchase of the vast Rothbury Estate by wildlife groups is hailed as "something very special".
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