Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session Z37: Quantum Acoustics
11:30 AM–2:30 PM,
Friday, March 18, 2022
Room: McCormick Place W-194B
Sponsoring Unit: DQI
Chair: Yiwen Chu, ETH Zurich
Abstract: Z37.00012 : Parity measurement in the strong dispersive regime of circuit quantum acoustodynamics (Part II)
1:42 PM–1:54 PM
Uwe von Lüpke
By interfacing mechanical resonators with superconducting circuits, circuit quantum acoustodynamics (cQAD) can make a variety of important tools available for manipulating and measuring quantum states of mechanical motion.
We demonstrate direct measurements of the phonon number distribution and parity of non-classical mechanical states, which are useful for a variety of protocols such as quantum state preparation and error correction. In this talk, we show the use of a cQAD device operating in the strong dispersive regime to directly map the phonon number parity onto the qubit state. We then use this ability to perform full Wigner tomography of the phonon state.
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