Existing quantum devices could be used to disrupt the stock market

Quantum technology could shake up the stock market. Traders working at distant stock exchanges could coordinate decisions to buy or sell nearly instantaneously by using entanglement to create a phenomenon called “quantum telepathy” – and all the quantum devices they would need to implement this scheme already exist.

This takes advantage of a counterintuitive phenomenon that Albert Einstein dubbed “spooky action at a distance”, in which two quantum particles can influence each other instantaneously across…