Propagating phonons coupled to an artificial atom
Artikel i vetenskaplig tidskrift, 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.

Författare

Martin Gustafsson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Thomas Aref

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Anton Frisk Kockum

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Maria Ekström

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Göran Johansson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Per Delsing

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Science

0036-8075 (ISSN)

Vol. 346 207-211

Scalable Superconducting Processors for Entangled Quantum Information Technology (ScaleQIT)

Europeiska kommissionen (FP7), 2013-02-01 -- 2016-01-31.

Styrkeområden

Nanovetenskap och nanoteknik

Ämneskategorier

Nanoteknik

Den kondenserade materiens fysik

Infrastruktur

Nanotekniklaboratoriet

DOI

10.1126/science.1257219