Abstract

An important requirement for quantum computing is control of the 'entanglement' of quantum spin states — which means that the states cannot be described without reference to one another. Now a team led by Richard Winpenny at the University of Manchester and Marco Affronte at the University of Modena & Reggio Emilia have shown that the spin of 'nanomagnets' can be coupled in a single molecule — providing a system with three bits of quantum information — and have proposed how they can be entangled.