Abstract
We present measurements of the resonant microwave excitation of the Rydberg energy levels of surface state electrons on superfluid helium. The temperature dependent line width γ(T) agrees well with theoretical predictions and is very small below 300 mK. Absorption saturation and power broadening were observed as the fraction of electrons in the first excited state was increased to 0.49, close to the thermal excitation limit of 0.5. The Rabi frequency was determined as a function of microwave power. The experiments show that the conditions are met for the use of these states in an electronic qubit.
| Original language | English |
|---|---|
| Pages (from-to) | 186-187 |
| Number of pages | 2 |
| Journal | Physica E: Low-Dimensional Systems and Nanostructures |
| Volume | 18 |
| Issue number | 1-3 |
| DOIs | |
| State | Published - May 2003 |
| Externally published | Yes |
Bibliographical note
Funding Information:We thank M.I. Dykman, P.M. Platzman and J. Singleton for discussions and F. Greenough, A.K. Betts and others for technical support. The work was supported by the EPSRC, the EU, INTAS and Royal Holloway, University of London.
Keywords
- Electrons on helium
- Microwave excitation
- Quantum computing
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics