Researchers 'split' phonons in step toward new type of quantum computer sciencemagazine
. By showing that the beamsplitter can be used to both induce a special quantum superposition state for one phonon, and further create interference between two phonons, the research team took the first critical steps toward creating a new kind of quantum computer.and built on years of breakthrough work on phonons by the team at Pritzker Molecular Engineering.In the experiments, researchers used phonons that have roughly a million times higher pitch than can be heard with the human ear.
Getting phonons into these quantum-entangled state is a much bigger leap than doing so with photons. The phonons used here, though indivisible, still require quadrillions of atoms working together in a quantum mechanical fashion. And if quantum mechanics rules physics at only the tiniest realm, it raises questions of where that realm ends and"Those atoms all have to behave coherently together to support what quantum mechanics says they should do," Cleland said.
interference experiment is the final piece showing that phonons are equivalent to photons," Cleland said."The outcome confirms we have the technology we need to build a linear mechanical quantum computer.", the University of Chicago platform directly integrates phonons with qubits. That means phonons could further be part of a hybrid quantum computer that combines the best of linear quantum computers with the power of qubit-based quantum computers.
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