Skip to Main content Skip to Navigation
Theses

VERS LE PIEGEAGE D'ATOMES DE RYDBERG CIRCULAIRES

Abstract : Controlling all the degrees of freedom of a simple system is an interesting goal both from a fundamental point of view and with a view to further applications, quantum information for example. We have started to build a new apparatus in order to trap circular
Rydberg atoms in the vicinity of surface micro-fabricated devices. The primary source of Rubidium is a vertical atomic jet producing a flux of slow atoms. We demonstrate the possibility of conducting an
experiment along the following lines. First, the atoms are captured inside a pumped Helium cryostat at the heart of which the experiment is carried out. A cold and dense Rubidium cloud is prepared using magnetic micro-chip techniques. Following an excitation process
involving lasers and radio-frequency, a single circular Rydberg atom is obtained, due to the dipole blockade effect. This atom is finally confined in a dynamic electric trap exploiting the extreme polarizability of the relevant atomic states. A "micro-wave
dressing" technique reduces the difference in polarizability between two given levels, allowing the preservation of quantum coherences over time scale of the order of a second. The atomic lifetime is
also increased by spontaneous emission inhibition in the vicinity of metallic surfaces. Finally, the atomic internal state after interaction processes is measured via detection of the ionization electron using a superconducting transition-edge sensor.
Complete list of metadatas

Cited literature [81 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-00012092
Contributor : Philippe Hyafil <>
Submitted on : Thursday, April 6, 2006 - 12:54:32 AM
Last modification on : Thursday, December 10, 2020 - 12:36:54 PM
Long-term archiving on: : Monday, September 17, 2012 - 1:25:29 PM

Identifiers

  • HAL Id : tel-00012092, version 1

Citation

Philippe Hyafil. VERS LE PIEGEAGE D'ATOMES DE RYDBERG CIRCULAIRES. Physique Atomique [physics.atom-ph]. Université Pierre et Marie Curie - Paris VI, 2005. Français. ⟨tel-00012092⟩

Share

Metrics

Record views

439

Files downloads

630