A group of physicists in Utrecht, San Sebastián and Pennsylvania have created a new artificial molecule that is insulating inside but has electronic states localized in its corners. These states have zero energy, and for this reason, are resilient to defects in the molecule and might be used as qubits in quantum computers. The results are published in Nature Materials on 23 September.
Prof. Cristiane Morais Smith from Utrecht University explains: "There are some big challenges in the development of quantum computers. One of the main problems is quantum decoherence: Information is lost into the environment. This makes it more difficult to design electronics on the quantum level than on the classical level. That is why we created electrons that are resilient to quantum decoherence."
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