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arXiv · 1201.1718

Coupling of an erbium spin ensemble to a superconducting resonator

Matthias U. Staudt·Io-Chun Hoi·Philip Krantz·Martin Sandberg·Michael Simoen·Pavel Bushev·Nicolas Sangouard·Mikael Afzelius·Vitaly S. Shumeiko·Göran Johansson·Per Delsing·C. M. Wilson
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Abstract

A quantum coherent interface between optical and microwave photons can be used as a basic building block within a future quantum information network. The interface is envisioned as an ensemble of rare-earth ions coupled to a superconducting resonator, allowing for coherent transfer between optical and microwave photons. Towards this end, we have realized a hybrid device coupling a Er$^{3+}$ doped Y$_2$SiO$_5$ crystal in a superconducting coplanar waveguide cavity. We observe a collective spin coupling of 4 MHz and a spin linewdith of down to 75 MHz.

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Matthias U. Staudt, Io-Chun Hoi, Philip Krantz, Martin Sandberg, Michael Simoen, Pavel Bushev, Nicolas Sangouard, Mikael Afzelius, Vitaly S. Shumeiko, Göran Johansson, Per Delsing, C. M. Wilson. 2012-01-09. Coupling of an erbium spin ensemble to a superconducting resonator. https://doi.org/10.1088/0953-4075/45/12/124019

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