Facilitation Induced Transparency and Single Photon Switch with
Dual-Channel Rydberg Interactions
- URL: http://arxiv.org/abs/2205.14621v3
- Date: Mon, 9 Jan 2023 07:43:05 GMT
- Title: Facilitation Induced Transparency and Single Photon Switch with
Dual-Channel Rydberg Interactions
- Authors: Yao Ding, Zhengyang Bai, Guoxiang Huang, Weibin Li
- Abstract summary: We investigate facilitation induced transparency enabled by strong and long-range Rydberg atom interactions.
In this setting, the resonant two-photon excitation of Rydberg states in a target channel is conditioned by a single Rydberg excitation in a control channel.
We show that the FIT is originated from the Rydberg interaction and the quantum interference effect between the two pathways.
- Score: 2.733700237741334
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We investigate facilitation induced transparency (FIT) enabled by strong and
long-range Rydberg atom interactions between two spatially separated optical
channels. In this setting, the resonant two-photon excitation of Rydberg states
in a target channel is conditioned by a single Rydberg excitation in a control
channel. Through the contactless coupling enabled by the Rydberg interaction,
the optical transparency of the target channel can be actively manipulated by
steering the optical detuning in the control channel. By adopting a
dressed-state picture, we identify two different interference pathways, in
which one corresponds to Rydberg blockade and an emergent one results from
facilitation. We show that the FIT is originated from the Rydberg interaction
and the quantum interference effect between the two pathways, which is
different from conventional electromagnetically induced transparency realized
by single-body laser-atom coupling. We find that the FIT in such a dual-channel
setting is rather robust, insensitive to changes of systemic parameters, and
can be generalized to multi-channel settings. Moreover, we demonstrate that
such a FIT permits to realize controllable single-photon switches, which also
paves a route to detect Rydberg facilitation by using optical absorption
spectra. Our study contributes to current efforts in probing correlated
many-body dynamics and developing single-photon quantum devices based on
Rydberg atom ensembles.
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