
Quantum eavesdropping could work even from inside a black hole
An observer hiding inside a black hole can eavesdrop on quantum objects outside it van van/Shutterstock Quantum eavesdropping is possible across a black hole’s event horizon, one of the most impermeable cosmic boundaries – at least in one direction. Daine Danielson at the University of Chicago, Illinois, wanted to know how the structure of space-time,…