This week’s most thought-provoking papers from the Physics arXiv.
Physicists have smashed the record for the amount of information a single photon can carry. Their experiment has immediate implications for quantum cryptography.
The approach could be a tenth the price of earlier methods.
U.S. intelligence agencies know better than anyone how vulnerable today’s technologies are to being infiltrated—but some spies are getting smartphones and Wi-Fi anyway.
Shooting wireless signals along power lines could widen Internet access.
Designed to make the technology more attractive to large banks, the change doesn’t seem to be welcomed by purists—but they may have to tolerate it.
Tech companies and Internet policy experts urge Congress not to give in to erroneous arguments about Internet oversight.
The medical maker collective Four Thieves Vinegar made an “EpiPencil” for a tiny fraction of what the EpiPen manufacturer Mylan charges.
The way software agents interact on the Web is poorly understood. Now evidence shows that they fight each other for years.
For patients with some inherited diseases, a chance to test an experimental treatment can offer the only hope.