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.
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.
It’s not another ride-hailing business, for one thing.
Finding the cheapest products requires paying attention to some subtle wrinkles in how the retailer displays items.
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.
The way software agents interact on the Web is poorly understood. Now evidence shows that they fight each other for years.
More products than ever are giving women options for managing their periods—if they can afford to.
Tech companies and Internet policy experts urge Congress not to give in to erroneous arguments about Internet oversight.