Quantum Physics News

First direct observation of the dead-cone effect in particle physics

 Quantum Physics News
 18 May 2022
The ALICE collaboration at the Large Hadron Collider (LHC) has made the first direct observation of the dead-cone effect—a fundamental feature of the theory of the strong force that binds quarks and gluons together into protons, neutrons and, ultimately, all atomic nuclei. In addition to confirming...

Quantum key distribution network accurately measures ground vibration

 Quantum Physics News
 18 May 2022
A team of researchers affiliated with several institutions in China has found that quantum key distribution (QKD) networks can be used to accurately measure ground vibration. In their paper published in the journal Physical Review Letters, the group describes their implementation of a twin-field,...

Going gentle on mechanical quantum systems

 Quantum Physics News
 13 May 2022
When thinking about quantum mechanical systems, single photons and well-isolated ions and atoms may spring to mind, or electrons spreading through a crystal. More exotic in the context of quantum mechanics are genuinely mechanical quantum systems; that is, massive objects in which mechanical motion...

More efficient optical quantum gates

 Quantum Physics News
 13 May 2022
Future quantum computers are expected not only to solve particularly tricky computing tasks, but also to be connected to a network for the secure exchange of data. In principle, quantum gates could be used for these purposes. But until now, it has not been possible to realize them with sufficient...

Quantum systems and the flight of the bee

 Quantum Physics News
 12 May 2022
At first glance, a system consisting of 51 ions may appear easily manageable. But even if these charged atoms are only changed back and forth between two states, the result is more than two quadrillion (1015) different orderings that the system can take on....

Researchers find way to form diodes from superconductors

 Quantum Physics News
 11 May 2022
A group of researchers from Pisa, Jyväskylä, San Sebastian and MIT have demonstrated how a heterostructure consisting of superconductors and magnets can be used to create unidirectional current like that found in semiconductor diodes....

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