Related topics: optical fiber

A 15-user quantum secure direct communication network

Quantum secure direct communication (QSDC) based on entanglement can directly transmit confidential information. Scientist in China explored a QSDC network based on time-energy entanglement and sum-frequency generation. The ...

How do swimmers control their front crawl swimming velocity?

A research team led by the Faculty of Health and Sport Sciences at the University of Tsukuba has reviewed the hydrodynamics literature related to swimming. They identified certain biomechanical aspects, including the relationship ...

Where are the foreigners of the first international age?

The Bronze Age in the eastern Mediterranean has long been considered by researchers to have been the 'first international age,' especially the period from 1600-1200 BC, when powerful empires from Anatolia, Mesopotamia, and ...

Research reveals how wounds heal in 'waves'

Many cells in our bodies are on the move and somehow seem to 'know' where to go. But how do they learn the location of their destination? This question is key to understanding phenomena such as the renewal of cells in our ...

Opinion: Hitting turbulence? Aviation and the climate crisis

In the U.K., there is a legal commitment to reducing the net carbon account for all six greenhouse gases by 80 percent (1990-2050) under the Climate Change Act 2008, and recently this target has been raised to 100 percent. ...

Can we still have fun if the UK goes carbon neutral?

Will Britain going carbon neutral mean no more fun? Experts from the University of Surrey have urged local policy makers to put in place infrastructure that will enable people to enjoy recreation and leisure while keeping ...

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