Scientists have uncovered a method to convert quantum information between various quantum technologies, which holds significant impliciations for quantum computing, communication, and networking. The study, which was published in the journal Nature, was financially supported by the Army Research
A niobium superconducting cavity. The holes lead to tunnels which intersect to trap light and atoms. Credit: Aishwarya Kumar
But if you want to build a quantum network, or connect quantum computers, you can’t send around microwave photons because their grip on their quantum information is too weak to survive the trip., and things like that—all use microwave frequencies of light,” said Aishwarya Kumar, a postdoc at the James Franck Institute at theand lead author on the paper.
Effectively using atoms for this purpose is made possible by the significant progress scientists have made in manipulating such small objects. “We as a community have built remarkable technology in the last 20 or 30 years that lets us control essentially everything about the atoms,” Kumar said. “So the experiment is very controlled and efficient.”
The technology works both ways: it can transfer quantum information from microwave photons to optical photons, and vice versa. So it can be on either side of a long-distance connection between two superconducting qubit quantum computers, and serve as a fundamental building block to a quantum internet.
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