Propagating phonons coupled to an artificial atom
Journal article, 2014

Quantum information can be stored in micromechanical resonators, encoded as quanta of vibration known as phonons. The vibrational motion is then restricted to the stationary eigenmodes of the resonator, which thus serves as local storage for phonons. In contrast, we couple propagating phonons to an artificial atom in the quantum regime and reproduce findings from quantum optics with sound taking over the role of light. Our results highlight the similarities between phonons and photons but also point to new opportunities arising from the unique features of quantum mechanical sound. The low propagation speed of phonons should enable new dynamic schemes for processing quantum information, and the short wavelength allows regimes of atomic physics to be explored that cannot be reached in photonic systems.

Author

Martin Gustafsson

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Thomas Aref

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Anton Frisk Kockum

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

Maria Ekström

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Göran Johansson

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

Per Delsing

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Science

0036-8075 (ISSN)

Vol. 346 6206 207-211

Scalable Superconducting Processors for Entangled Quantum Information Technology (ScaleQIT)

European Commission (FP7), 2013-02-01 -- 2016-01-31.

Areas of Advance

Nanoscience and Nanotechnology (2010-2017)

Subject Categories

Nano Technology

Condensed Matter Physics

Infrastructure

Nanofabrication Laboratory

DOI

10.1126/science.1257219

More information

Created

10/6/2017