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Phase controlled light switching at low power levels

Hoonsoo Kang·Gessler Hernandez·Jiepeng Zhang·Yifu Zhu
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Abstract

We report experimental observations of interference between three-photon and one-photon excitations, and phase control of light attenuation/transmission in a four-level system. Either constructive interference or destructive interference can be obtained by varying the phase and/or frequency of a weak control laser. The interference enables absorptive switching of one field by another field at different frequencies and ultra-low light levels.

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Hoonsoo Kang, Gessler Hernandez, Jiepeng Zhang, Yifu Zhu. 2005-10-05. Phase controlled light switching at low power levels. https://arxiv.org/abs/quant-ph/0510036

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