Photon Echoes Produced by Switching Electric Fields

Details Photon Echoes Produced by Switching Electric Fields Photon Echoes Produced by Switching Electric Fields

2005-06-28

arxiv.org/abs/quant-ph/0506232v5

Physics

Quantum Physics

improved introduction, including theoretical outline of the relvant quantum memory proposal

Scientific paper

10.1103/PhysRevLett.96.043602

We demonstrate photon echoes in Eu$^{3+}$:Y$_{2}$SiO$_{5}$ by controlling the inhomogeneous broadening of the Eu$^{3+}$ $^{7}$F$_{0}\leftrightarrow^{5}$D$_{0}$ optical transition. This transition has a linear Stark shift and we induce inhomogeneous broadening by applying an external electric field gradient. After optical excitation, reversing the polarity of the field rephases the ensemble, resulting in a photon echo. This is the first demonstration of such a photon echo and its application as a quantum memory is discussed.

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