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arXiv · 2312.03156

Optical coherence storage in dark exciton states using spin-dependent three-pulse photon echo

I. A. Solovev·R. S. Nazarov·A. A. Butiugina·S. A. Eliseev·V. A. Lovcjus·Yu. P. Efimov·Yu. V. Kapitonov·I. A. Yugova
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Abstract

Extension of coherent response time is a desired goal in the field of all-optical information processing implemented in classical and quantum ways. Here we demonstrate how spin-dependent stimulated photon echo can be used to extend decay time of coherent signal from exciton ensemble. We experimentally studied photon echoes from excitons in a model single InGaAs/GaAs quantum well subject to transverse magnetic field. Field-induced quantum beats lead to oscillation of exciton population between bright and long-lived dark excitons. As a result, photon echo decays much longer with decay time attaining dark exciton lifetime in case of non-oscillatory regime.

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I. A. Solovev, R. S. Nazarov, A. A. Butiugina, S. A. Eliseev, V. A. Lovcjus, Yu. P. Efimov, Yu. V. Kapitonov, I. A. Yugova. 2023-12-05. Optical coherence storage in dark exciton states using spin-dependent three-pulse photon echo. https://arxiv.org/abs/2312.03156

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