Details

Autor(en) / Beteiligte

• Collin, E
• Bailey, W
• Fozooni, P
• Frayne, P G
• Glasson, P
• Harrabi, K
• Lea, M J
• Papageorgiou, G

Titel

Microwave saturation of the Rydberg States of electrons on helium

Ist Teil von

• Physical review letters, 2002-12, Vol.89 (24), p.245301-245301, Article 245301

Ort / Verlag

United States

Erscheinungsjahr

2002

Quelle

American Physical Society

Beschreibungen/Notizen

• We present measurements of the resonant microwave excitation of Rydberg energy levels for surface-state electrons on superfluid helium. The temperature-dependent contribution to the linewidth gamma(T) agrees with theoretical predictions and is very small below 700 mK, in the ripplon scattering regime. 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 Omega was determined as a function of microwave power. High values of the ratio Omega/gamma confirm this system as an excellent candidate for creating qubits.