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Investigations of Optical Coherence Properties in an Erbium-doped Silicate Fiber for Quantum State Storage

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

We studied optical coherence properties of the 1.53 $μ$m telecommunication transition in an Er$^{3+}$-doped silicate optical fiber through spectral holeburning and photon echoes. We find decoherence times of up to 3.8 $μ$s at a magnetic field of 2.2 Tesla 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 Er$^{3+}$ spin and the magnetic moment of tunneling modes in the glass. Furthermore, we observed fine-structure in the Erbium holeburning spectrum originating from superhyperfine interaction with $^{27}$Al host nuclei. Our results show that Er$^{3+}$-doped silicate fibers are promising material candidates for quantum state storage.

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Matthias U. Staudt, Sara R. Hastings-Simon, Mikael Afzelius, Didier Jaccard, Wolfgang Tittel, Nicolas Gisin. 2006-03-22. Investigations of Optical Coherence Properties in an Erbium-doped Silicate Fiber for Quantum State Storage. https://doi.org/10.1016/j.optcom.2006.05.007

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