Journal ArticleDOI
XOR/XNOR directed logic circuit based on coupled‐resonator‐induced transparency
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In this article, a directed logic circuit with the functions of XOR and XNOR using coupled-resonator-induced transparency (CRIT) effect has been proposed and demonstrated in parallelly coupled double microring resonators (MRRs).Abstract:
Coupled-resonator-induced transparency (CRIT) effect has been widely studied in parallelly coupled double microring resonators (MRRs), and various applications based on the CRI T effect have been demonstrated. We report the proposal and demonstration of a directed logic circuit with the functions of XOR and XNOR using CRIT. Two electrical signals applied to two coupled MRRs represent two operands of the logic operations, and the operation results are represented by the output optical signal. As proof-of-concept, the thermo-optic modulation scheme is employed with an operating speed of 10 kbps. Keywords: Coupled-Resonator-Induced transparency (CRIT), directed logic, microring resonator 1. INTRODUCTION Electromagnetically induced transparency (EIT) is a phenomenon that exploits the destructive quantum interference to make a medium transparent over a narrow spectral range 1-5 . Traditionally, they are mainly investigated in atomic systems and semiconductor nanostructures 1-7 . Various applications of EIT have been proposed and demonstrated such as photon controllingread more
Citations
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Journal ArticleDOI
Demonstration of directed XOR/XNOR logic gates using two cascaded microring resonators
Lei Zhang,Ruiqiang Ji,Lianxi Jia,Lin Yang,Ping Zhou,Yonghui Tian,Ping Chen,Yangyang Lu,Zhenyu Jiang,Yuliang Liu,Qing Fang,Mingbin Yu +11 more
TL;DR: Numerical simulation results indicate that the length difference between the upper waveguide and the under waveguide can change the output spectrum characteristics of the device, which acts like a Mach-Zehnder interferometer (MZI).
Journal ArticleDOI
Simulation and Demonstration of Directed XOR/XNOR Logic Gates Using Two Cascaded Microring Resonators
Yonghui Tian,Li Dezhao,Zilong Liu,Huifu Xiao,Zhao Guolin,Jianhong Yang,Zhao Yongpeng,Genliang Han,Xiaoping Gao +8 more
TL;DR: Numerical simulation results indicate that the length difference between the upper waveguide and the under waveguide can change the output spectrum characteristics of the device, which acts like a Mach–Zehnder interferometer (MZI).
Journal ArticleDOI
Design of micro-ring resonator based all-optical parity generator and checker circuit
TL;DR: A single circuit consisting of 4 micro-ring resonators capable to perform 3 bit parity generator and checker operations is studied and reported, which makes proposed circuit design compact, simple and will be helpful in designing all optical integrated circuit in future.
Journal ArticleDOI
Electro-Optic Ripple-Carry Adder in Integrated Silicon Photonics for Optical Computing
Zhoufeng Ying,Shounak Dhar,Zheng Zhao,Chenghao Feng,Rohan Mital,Chi-Jui Chung,David Z. Pan,Richard A. Soref,Ray T. Chen +8 more
TL;DR: Various designs of directed-logic-based electro-optic ripple-carry adders in integrated silicon photonics, which replace the electrical components in the critical path using optical counterparts are proposed.
Journal ArticleDOI
Automated logic synthesis for electro-optic logic-based integrated optical computing.
Zhoufeng Ying,Zheng Zhao,Chenghao Feng,Rohan Mital,Shounak Dhar,David Z. Pan,Richard A. Soref,Ray T. Chen +7 more
TL;DR: An And-Inverter Graphs based automated logic synthesis algorithm is described as an example to implement the EO logic, which offers an instruction for the design automation of high-speed integrated optical computing circuits.
References
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Journal ArticleDOI
Light speed reduction to 17 metres per second in an ultracold atomic gas
Lene Vestergaard Hau,Lene Vestergaard Hau,Stephen E. Harris,Zachary Dutton,Zachary Dutton,Cyrus H. Behroozi,Cyrus H. Behroozi +6 more
TL;DR: In this paper, an experimental demonstration of electromagnetically induced transparency in an ultracold gas of sodium atoms, in which the optical pulses propagate at twenty million times slower than the speed of light in a vacuum, is presented.
Journal ArticleDOI
Electromagnetically Induced Transparency
TL;DR: Electromagnetic induced transparency is a technique for eliminating the effect of a medium on a propagating beam of electromagnetic radiation EIT may also be used, but under more limited conditions, to eliminate optical self-focusing and defocusing and to improve the transmission of laser beams through inhomogeneous refracting gases and metal vapors, as figure 1 illustrates.
Journal ArticleDOI
Observation of electromagnetically induced transparency.
TL;DR: In this paper, the authors report the first demonstration of a technique by which an optically thick medium may be rendered transparent by applying a temporally smooth coupling laser between a bound state of an atom and the upper state of the transition which is to be made transparent.
Proceedings Article
Observation of electromagnetically induced transparency
TL;DR: The first demonstration of a technique by which an optically thick medium may be rendered transparent is reported, which results from a destructive interference of two dressed states created by applying a temporally smooth coupling laser between a bound state of an atom and the upper state of the transition which is to be made transparent.
Journal ArticleDOI
Storage of light in atomic vapor.
TL;DR: An experiment is reported in which a light pulse is effectively decelerated and trapped in a vapor of Rb atoms, stored for a controlled period of time, and then released on demand.