Quantum Piezoacoustics
Abstract
The overarching goals of this proposed project are to (1) extend current methods for the quantum-control and detection of single phonons at microwave frequencies, and (2) use these methods to understand the fundamental science controlling loss and decoherence, at the quantum level, in mechanical structures. In parallel we will develop ultra-low-loss, microwave-frequency mechanical quantum devices for applications in (A) single-phonon physics, including interferometry; (B) acoustic phonon-based quantum information storage; and (C) coherent quantum transduction, between microwave and optical frequencies, mediated by acoustic phonons. To date, our group has demonstrated the storage and recovery of single phonons in a short, single-mode mechanical resonator, as well as the synthesis of superposed phonon Fock states and their quantum state analysis using Wigner tomography. We have also coupled two qubits through a “long-throw” acoustic resonator, enabling single-arm phonon interferometry, as well as the quantum entanglement of two qubits by sharing a single phonon. We plan to further build on these new capabilities by exploiting the transport of single phonons and more complex phonon quantum states through mechanical transmission devices, in one thrust focusing on surface acoustic wave devices and in a second thrust on suspended bulk acoustically resonant structures (Lamb wave resonators). We will develop one- and two-qubit experiments aimed at the high-fidelity storage and transfer of quantum information, and on the integration, via acoustic phonons, of qubits with optomechanical structures for microwave-optical transduction.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 12, 2021
- Source ID
- FA95502010270
Entities
People
- Andrew Cleland
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Chicago