Communications of the ACM
In Quantum Computing, Light May Lead the Way
Yale University researchers have demonstrated the ability to create and control a large quantum mechanical system built on protons.
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Yale University researchers say they have developed a method to have light play a bigger, more versatile role in the future of quantum computing.
The researchers have coaxed an unprecedented number of photons to behave quantum mechanically, which raises the possibility that such states of light could play the part of several quantum bits. "This experiment shows that we can create and control a large quantum mechanical system built on photons," says Yale graduate student Brian Vlastakis.
The new research shows that large numbers of photons can be controlled with the help of a lone qubit, suggesting the possibility that a collection of photons may soon play the role of many qubits, potentially minimizing the cost and scale of quantum computing devices.
"With these results, we are starting to think about new ways to realize the functions required for a future quantum computer," says Yale professor Robert Schoelkopf.
The researchers used superconducting materials to store microwave photons inside resonant cavities operated at cryogenic temperatures, which they then controlled using a single fabricated qubit and computer-controlled electronic pulses.
From Yale News
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