Investigations of optical coherence properties in an erbium-doped silicate fiber for quantum state storage

OPTICS COMMUNICATIONS

卷:266

Article

Staudt, Matthias U. ; Hastings-Simon, Sara R. ; Afzelius, Mikael ; Jaccard, Didier ; Tittel, Wolfgang ; Gisin, Nicolas

关键词: quantum communication;    quantum memory;    coherence properties;    erbium;    rare-earth doped silicate fiber;    magnetic tunnelling systems;   

DOI  :  10.1016/j.optcom.2006.05.007

来源: Elsevier

【 摘 要 】

We studied optical coherence properties of the 1.53 mu m telecommunication transition in an Er3+-doped silicate optical fiber through spectral holeburning and photon echoes. We find decoherence times of up to 3.8 mu s at a magnetic field of 2.2 T and a temperature of 150 mK. A strong magnetic-field dependent optical dephasing was observed and is believed to arise from an interaction between the electronic Er3+ spin and the magnetic moment of tunneling systems in the glass. Furthermore, we observed fine-structure in the Erbium holeburning spectrum originating from superhyperfine interaction with Al-27 host nuclei. Our results show that Er3+-doped silicate fibers are promising material candidates for quantum state storage. (c) 2006 Elsevier B.V. All rights reserved.

【 授权许可】

Free