Skip to Main content Skip to Navigation
Theses

Optimisation de la programmation d’un cristal dopé aux ions de terres rares, opérant comme processeur analogique d’analyse spectrale RF, ou de stockage d’information quantique

Abstract : The development of a quantum memory for light involves the most fundamental aspects of the light-matter interaction. To store the quantum information carried by light, the material has to be able to stay in a state of quantum superposition. The storage time is limited by the lifetime of this state, characterized by the coherence time. The first experiments involved the well-known cold atomic vapors. More recently, Rare Earth Ions doped Crystals (REIC) have drawn attention because of their remarkably long coherence time, combined with a large interaction bandwidth. Specific protocols have been proposed to take the most out of these properties. We have opted for a promising spin-off of the well-known photon echo, named the Atomic Frequency Comb (AFC, proposed in 2008), based on the transmission of the incoming field through a spectrally periodic absorption profile. The first chapters of this manuscript present this protocol and our works aimed at improving its efficiency (the probability for capturing and retrieving the incoming information), increasing its bandwidth and its multiplexing capacity and measuring its noise. The following chapters present a new protocol, proposed in our group during this thesis, and called Revival Of Silenced Echo (ROSE). This protocol, similar to the photon echo, have been demonstrated and characterized experimentally. It seems really promising in terms of efficiency, bandwidth and noise.
Complete list of metadatas

https://tel.archives-ouvertes.fr/tel-00766334
Contributor : Abes Star :  Contact
Submitted on : Wednesday, December 2, 2015 - 10:49:06 AM
Last modification on : Wednesday, October 14, 2020 - 4:00:21 AM
Long-term archiving on: : Thursday, March 3, 2016 - 10:11:25 AM

File

VD_BONAROTA_MATTHIEU_21092012....
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-00766334, version 1

Collections

Citation

Matthieu Bonarota. Optimisation de la programmation d’un cristal dopé aux ions de terres rares, opérant comme processeur analogique d’analyse spectrale RF, ou de stockage d’information quantique. Optique [physics.optics]. Université Paris Sud - Paris XI, 2012. Français. ⟨NNT : 2012PA112324⟩. ⟨tel-00766334⟩

Share

Metrics

Record views

661

Files downloads

430