English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Non-exponential decay of a giant artificial atom

MPS-Authors
/persons/resource/persons226776

Guo,  Lingzhen
Marquardt Division, Max Planck Institute for the Science of Light, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)

arXiv1812.01302.png
(Supplementary material), 12KB

Citation

Andersson, G., Suri, B., Guo, L., Aref, T., & Delsing, P. (2019). Non-exponential decay of a giant artificial atom. Nature Physics, 15, 1123-1127. doi:10.1038/s41567-019-0605-6.


Cite as: https://hdl.handle.net/21.11116/0000-0002-A2E8-1
Abstract
In quantum optics, light–matter interaction has conventionally been studied using small atoms interacting with electromagnetic fields with wavelength several orders of magnitude larger than the atomic dimensions1,2. In contrast, here we experimentally demonstrate the vastly different ‘giant atom’ regime, where an artificial atom interacts with acoustic fields with wavelength several orders of magnitude smaller than the atomic dimensions. This is achieved by coupling a superconducting qubit3 to surface acoustic waves at two points with separation on the order of 100 wavelengths. This approach is comparable to controlling the radiation of an atom by attaching it to an antenna. The slow velocity of sound leads to a significant internal time-delay for the field to propagate across the giant atom, giving rise to non-Markovian dynamics4. We demonstrate the non-Markovian character of the giant atom in the frequency spectrum as well as non-exponential relaxation in the time domain.