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Physics

Existing quantum devices could be used to disrupt the stock market

Commercially available quantum technology could let stock traders coordinate decisions to buy or sell nearly instantaneously using a technique called “quantum telepathy”

By Karmela Padavic-Callaghan

8 August 2024

Traders on the floor of the New York Stock Exchange

Michael M. Santiago/Getty Images

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…

Article amended on 9 August 2024

We clarified the relationship between particles at the two stock market servers and the intended use of the technology

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