Low-photon-number optical switch and AND/OR logic gates based on quantum dot-bimodal cavity coupling system

被引：33

作者：

Ma, Shen ^{[1
]}

Ye, Han ^{[1
]}

Yu, Zhong-Yuan ^{[1
]}

Zhang, Wen ^{[1
]}

Peng, Yi-Wei ^{[1
]}

Cheng, Xiang ^{[1
]}

Liu, Yu-Min ^{[1
]}

机构：

[1] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China

来源：

SCIENTIFIC REPORTS | 2016年 / 6卷

基金：

中国国家自然科学基金;

关键词：

SPIN;

D O I：

10.1038/srep19001

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We propose a new scheme based on quantum dot-bimodal cavity coupling system to realize alloptical switch and logic gates in low-photon-number regime. Suppression of mode transmission due to the destructive interference effect is theoretically demonstrated by driving the cavity with two orthogonally polarized pulsed lasers at certain pulse delay. The transmitted mode can be selected by designing laser pulse sequence. The optical switch with high on-off ratio emerges when considering one driving laser as the control. Moreover, the AND/OR logic gates based on photon polarization are achieved by cascading the coupling system. Both proposed optical switch and logic gates work well in ultra-low energy magnitude. Our work may enable various applications of all-optical computing and quantum information processing.

引用

页数：8

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