Phonons as transporters of quantum information

ORAL  · Invited

Abstract

Phonons, and in particular surface acoustic wave phonons, have been proposed as a means to coherently couple distant solid-state quantum systems. Recent experiments have shown that superconducting qubits can control and detect individual phonons in a resonant structure, enabling the coherent generation and measurement of complex stationary phonon states. Here, I will describe our recent experiments demonstrating the deterministic emission and capture of itinerant surface acoustic wave phonons, enabling the phonon-mediated transfer of quantum states between two qubits, including the high-fidelity quantum entanglement of two superconducting qubits. If time permits, I will also describe a follow-on experiment that shows the phonon version of the optical ``quantum eraser'' experiment.

*Research supported by the U.S. Air Force Office of Scientific Research, the U.S. Army Research Laboratory, the U.S. Department of Energy, Argonne National Laboratory, the National Science Foundation, the UChicago NSF MRSEC, NSF QLCI for HQAN, and the NSF NNCI.

–

Publication: [1] É. Dumur, K. J. Satzinger, G. A. Peairs, M.-H. Chou, A. Bienfait, H.-S. Chang, C. R. Conner, J. Grebel, R. G. Povey, Y. P. Zhong, A. N. Cleland, "Quantum communication with itinerant surface acoustic wave phonons", submitted, 2021
[2] M.-H. Chou, É. Dumur, Y. P. Zhong, G. A. Peairs, A. Bienfait, H.-S. Chang, C. R. Conner, J. Grebel, R. G. Povey, K. J. Satzinger, A. N. Cleland, "Measurements of a quantum bulk acoustic resonator using a superconducting qubit," Appl. Phys. Lett. 117, 254001 (2021)
[3] A. Bienfait, Y. P. Zhong, H.-S. Chang, M.-H. Chou, C. R. Conner, É. Dumur, J. Grebel, G. A. Peairs, R. G. Povey, K. J. Satzinger, A. N. Cleland, "Quantum erasure using entangled surface acoustic phonons," Phys. Rev. X 10, 021055 (2020)
[4] A. Bienfait, K. J. Satzinger, Y. P. Zhong, H.-S. Chang, M.-H. Chou, C. R. Conner, É. Dumur, J. Grebel, G. A. Peairs, R. G. Povey, A. N. Cleland, "Phonon-mediated quantum state transfer and remote qubit entanglement," Science 364, 368-371 (2019)

Presenters

  • Andrew N Cleland

    • University of Chicago
    • Argonne National Laboratory; University of Chicago

Authors

  • Andrew N Cleland

    • University of Chicago
    • Argonne National Laboratory; University of Chicago