Jones Seminar: Quantum Computing with Sound

Optional ZOOM LINK
Meeting ID: 963 3025 4065
Passcode: 956285

My research group has been developing technology enabling controlled experiments on phonons, the quanta of sound. We can create and store individual phonons in a mechanical resonator; generate quantum entangled states between phonons in two physically separated mechanical resonators; use phonons to transmit quantum states; and generate quantum entanglement through the sharing of "half-phonons." By building a single-phonon interferometer, analogous to its optical counterpart, we have also demonstrated the acoustic version of the Hong-Ou-Mandel effect, with its signature of quantum interference. These various advances point to the possibility of building a phonon-based quantum computer, in which phonons, generated as "throw-away" qubits, can in principle allow inexpensive scaling to a very large quantum computer. 

Hosted by Professor Mattias Fitzpatrick.

About the Speaker(s)

Andrew Cleland
Professor of Molecular Engineering, U Chicago

Andrew N. Cleland holds the John A. MacLean Sr. Chair in the Pritzker School of Molecular Engineering at the University of Chicago, where he works on the experimental development of superconducting qubits and quantum acoustics. His group made the first demonstration of a mechanical system cooled to its quantum ground state; the acoustic Hong-Ou-Mandel edect; and a scalable superconducting qubit operating at the quantum error-correction threshold. He was awarded the 2025 Olli V. Lounasmaa Memorial Prize, a 2024 Vannevar Bush Faculty Fellow, a 2022 Fulbright Distinguished Chair, and served in the chair line for the American Physical Society – Division of Quantum Information. His work was recognized as the Science 2010 "Breakthrough of the Year," and was twice selected as one of the "Top Ten Discoveries in Physics" by UK's Institute of Physics. He is a fellow of the American Association for the Advancement of Science and of the American Physical Society.

Contact

For more information, contact Amos Johnson at amos.l.johnson@dartmouth.edu.