Quantum superposition in a living creature - the ultimate in multi-tasking

New Scientist - 9/15/19 (by Marcus Chown)

Water bears, similar to the one pictured here, can survive in a vacuum and might be made to behave like quantum objects (Courtesy: Ralph O Schill)

Quantum weirdness could soon invade the living world, if a scheme to give a flu virus a strange double life comes off.

In quantum theory, a single object can be doing two different things at once. This so-called "superposition" is a delicate state, destroyed by any contact with the outside world. The largest objects that have been superposed so far are molecules. It is hard to put a much larger object such as a cat or human into a superposition because air molecules and photons are always bouncing off it.

But it might be possible with a small life form, according to Oriol Romero-Isart of the Max Planck Institute for Quantum Optics in Garching, Germany, and his colleagues. They hope to prove the concept with the flu virus, which exhibits some properties of life, because it can survive in a vacuum – solving the problem of pesky air molecules.

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