Quantum Cheshire Cat spotted in Grenoble!

This story in Physics World made me laugh!

A most curious thing is the quantum Cheshire cat.
(Courtesy: iStockphoto/koffeezilla)/physicsworld.com

“In Lewis Carroll’s story Alice’s Adventures in Wonderland, Alice encounters a smiling Cheshire cat that fades away leaving behind just its grin. A quantum Cheshire cat is a physical system that can somehow be separated from its quantum state, only to be reunited at a later time.”

Whilst the physics is mindblowing, the practical implications are intriguing – though they have probably already been explored in science fiction. Can anyone out there in the blogosphere recommend a good novel which deals with this bizarre concept?

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