Optical logic gates using coherent feedback

Zhifan Zhou; Cunjin Liu; Yami Fang; Jun Zhou; Ryan T. Glasser; Liqing Chen; Jietai Jing; Weiping Zhang

doi:10.1063/1.4767133

Optical logic gates using coherent feedback

Zhifan Zhou, Cunjin Liu, Yami Fang, Jun Zhou, Ryan T. Glasser, Liqing Chen, Jietai Jing, Weiping Zhang

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

We experimentally demonstrate optical logic "OR" and "NOR" gates via coherent feedback. Based on a four-wave mixing process in hot rubidium vapor, two feedback beams are capable of fulfilling an optical "NOR" gate for the feedback-suppressed state and an optical "OR" gate for the feedback-boosted state simultaneously. The logic gates exhibit transition times faster than previously demonstrated in rubidium vapor. Coherent photon conversion between the two logic states, due to the atomic coherence, is observed in the coherent feedback process.

Original language	English
Article number	191113
Journal	Applied Physics Letters
Volume	101
Issue number	19
DOIs	https://doi.org/10.1063/1.4767133
State	Published - 5 Nov 2012
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4767133

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title = "Optical logic gates using coherent feedback",

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AU - Zhou, Zhifan

AU - Liu, Cunjin

AU - Fang, Yami

AU - Zhou, Jun

AU - Glasser, Ryan T.

AU - Chen, Liqing

AU - Jing, Jietai

AU - Zhang, Weiping

PY - 2012/11/5

Y1 - 2012/11/5

N2 - We experimentally demonstrate optical logic "OR" and "NOR" gates via coherent feedback. Based on a four-wave mixing process in hot rubidium vapor, two feedback beams are capable of fulfilling an optical "NOR" gate for the feedback-suppressed state and an optical "OR" gate for the feedback-boosted state simultaneously. The logic gates exhibit transition times faster than previously demonstrated in rubidium vapor. Coherent photon conversion between the two logic states, due to the atomic coherence, is observed in the coherent feedback process.

AB - We experimentally demonstrate optical logic "OR" and "NOR" gates via coherent feedback. Based on a four-wave mixing process in hot rubidium vapor, two feedback beams are capable of fulfilling an optical "NOR" gate for the feedback-suppressed state and an optical "OR" gate for the feedback-boosted state simultaneously. The logic gates exhibit transition times faster than previously demonstrated in rubidium vapor. Coherent photon conversion between the two logic states, due to the atomic coherence, is observed in the coherent feedback process.

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U2 - 10.1063/1.4767133

DO - 10.1063/1.4767133

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VL - 101

JO - Applied Physics Letters

JF - Applied Physics Letters

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ER -

Optical logic gates using coherent feedback

Abstract

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