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Imagine having your smart phone powered by a quantum computer chip. Yes, I write about this all the time. Yes, I am obsessed. Yes, I will gladly sign up to Beta test a Qumputer. Anyway, Rice University physicists have created a tiny “electron superhighway” that could one day be useful for building a quantum computer, a new type of computer that will use quantum particles in place of the digital transistors found in today’s microchips.