Quantum information takes a float on sound waves

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Yale scientists have combined a simple-to-produce device that uses sound waves to store quantum information and modify it from one form to another, all inside a single, integrated chip.

A schematic sketch of a superconducting qubit joined to phonons inside a turquoise crystal. Inset shows a appetite spectrum of phonons totalled regulating a qubit.

The device allows a superconducting synthetic atom — a qubit — to sell appetite and quantum information with a high magnitude bulk acoustic call resonator (HBAR). The ability to manipulate and store frail quantum information in a strong and easy-to-manufacture approach is a essential step in a growth of quantum computing technology.

The work is a partnership during Yale between a labs of Robert Schoelkopf, a Sterling Professor of Applied Physics and Physics, and Peter Rakich, partner highbrow of physics. Yiwen Chu, a postdoctoral associate in Schoelkopf’s lab, led a bid and is initial author of a investigate that appears Sept. 21 in a online book of a biography Science.

Chu pronounced a new device facilities a qubit done from superconducting aluminum and a automatic resonator done with a turquoise wafer. The wafer has dual discriminating surfaces behaving as mirrors for sound waves.

We found that even a singular quantum molecule of sound, or a phonon, can live for a really prolonged time when it bounces behind and onward between these mirrors,” Chu explained. “It can also be joined to a superconducting qubit done on a aspect of a turquoise regulating a hoop of aluminum nitride, that translates acoustic appetite into electromagnetic appetite and clamp versa.”

The multiple of these properties enables a researchers to send quantum states behind and onward between a qubit and a automatic resonator, Chu added. She also remarkable that a new device is easier to make than other systems that mix superconducting circuits with automatic motion.

Yale scientists have done a array of quantum superconducting breakthroughs in new years, destined during formulating electronic inclination that are a quantum chronicle of a integrated circuit. The ability to mix that believe with a automatic resonator is a profitable step, Chu said.

For example, automatic resonators can be used to store quantum information generated by superconducting qubits in a some-more compress and strong way,” she said. They can also be used to interface superconducting circuits to other forms of quantum objects, such as manifest or infrared light. It would potentially concede us to emanate quantum information in a circuits and afterwards broadcast it over prolonged distances regulating light.”

Co-authors of a new investigate from a Yale Departments of Applied Physics and Physics embody Schoelkopf, Rakich, Prashanta Kharel, William Renninger, Luke Burkhart, and Luigi Frunzio.

Source: Yale University

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