scholarly journals Interference of Coherent Polariton Beams in Microcavities: Polarization-Controlled Optical Gates

2007 ◽  
Vol 99 (19) ◽  
Author(s):  
C. Leyder ◽  
T. C. H. Liew ◽  
A. V. Kavokin ◽  
I. A. Shelykh ◽  
M. Romanelli ◽  
...  
Keyword(s):  
Optical Gates

scholarly journals Procedure via cross-Kerr nonlinearities for encoding single logical qubit information onto four-photon decoherence-free states

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jino Heo ◽  
Seong-Gon Choi
Keyword(s):  
Quantum Information ◽  
Quantum Information Processing ◽  
Photon Number ◽  
Optical Devices ◽  
Quantum Bus ◽  
Reliable Procedure ◽  
Optical Gates ◽  
Photon Loss ◽  
Decoherence Effect ◽  
Logical Qubit

AbstractWe propose a photonic procedure using cross-Kerr nonlinearities (XKNLs) to encode single logical qubit information onto four-photon decoherence-free states. In quantum information processing, a decoherence-free subspace can secure quantum information against collective decoherence. Therefore, we design a procedure employing nonlinear optical gates, which are composed of XKNLs, quantum bus beams, and photon-number-resolving measurements with linear optical devices, to conserve quantum information by encoding quantum information onto four-photon decoherence-free states (single logical qubit information). Based on our analysis in quantifying the affection (photon loss and dephasing) of the decoherence effect, we demonstrate the experimental condition to acquire the reliable procedure of single logical qubit information having the robustness against the decoherence effect.

scholarly journals Comparative study of all-optical INVERTER and BUFFER gates using MZI structure

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Pallavi Singh ◽  
Ashutosh Kumar Singh ◽  
Vanya Arun ◽  
Devendra K Tripathi
Keyword(s):  
Extinction Ratio ◽  
Low Complexity ◽  
Optical Amplifier ◽  
Destructive Interference ◽  
Eye Diagram ◽  
Pump And Probe ◽  
All Optical ◽  
High Scalability ◽  
Comparative Results ◽  
Optical Gates

AbstractIn the paper, one input optical gates i.e., INVERTER and BUFFER have been designed using some basic assumption to analyze with the help of Semi-conductor Optical Amplifier based Mach–Zehnder Interferometer structure. The results are optimized by iterative process. The proposed design of optical gates presents low complexity, high scalability and more feasible to evaluate through digital Boolean analyzation. The digital Boolean analyzation is analyzed by some basic Boolean rules and assumptions which makes the design more digital so that it can be compatible for more than one input optical gates also. Optical Gate is designed to get constructive and destructive interference for pump and probe as they are injected into SOA simultaneously. The phase modulation is converted into intensity modulation which gives a Boolean result. The paper is optimized by Eye diagram, Q factor, wavelength spectrum and frequency chirp for both the gates. The comparative results of extinction ratio for both the gates have also been discussed. The design is supported by theoretical analysis, simulation tool (Optsim) and Boolean explanation. The proposed designs are constructed with same pattern which supports the same Boolean analysis.

Active lossless monolithic one-by-four splitters/combiners using optical gates on InP

1995 ◽  
Vol 7 (5) ◽  
pp. 511-513 ◽  
Author(s):  
F. Ratovelomanana ◽  
N. Vodjdani ◽  
A. Enard ◽  
G. Glastre ◽  
D. Rondi ◽  
...  
Keyword(s):  
Optical Gates

ARRAY OF PICOSECOND GAAS OPTICAL GATES

Optics News ◽  
1985 ◽  
Vol 11 (12) ◽  
pp. 7 ◽  
Author(s):  
N. PEYGHAMBARIAN ◽  
H. M. GIBBS
Keyword(s):  
Optical Gates

Designing optical gates using metal–organic–metal transmission lines with multivalue and reconfigurable characteristics

2019 ◽  
Vol 13 (03) ◽  
pp. 1 ◽  
Author(s):  
Sepideh Ebrahimi ◽  
Reza Sabbaghi-Nadooshan ◽  
Mohammad Bagher Tavakoli
Keyword(s):  
Transmission Lines ◽  
Organic Metal ◽  
Metal Organic ◽  
Optical Gates

Recovery Dynamics Analysis of Saturable Absorber Optical Gates by Optical Sampling

1999 ◽  
Author(s):  
Masayuki Shirane ◽  
Yoichi Hashimoto ◽  
Hirohito Yamada ◽  
Hiroyuki Yokoyama
Keyword(s):  
Saturable Absorber ◽  
Dynamics Analysis ◽  
Optical Sampling ◽  
Recovery Dynamics ◽  
Optical Gates

scholarly journals Wireless communication for control of manipulation systems

2012 ◽  
Vol 22 (1) ◽  
pp. 29-41
Author(s):  
Květoslav Belda ◽  
Václav Rychnovský ◽  
Pavel Píša
Keyword(s):  
Wireless Communication ◽  
Data Communication ◽  
Level Control ◽  
Wireless Data ◽  
Distributed Manipulation ◽  
Manipulation System ◽  
Zigbee Protocol ◽  
Control Computer ◽  
Optical Gates ◽  
Simple Feedback

Wireless communication for control of manipulation systemsThe paper deals with a novel application of the wireless data communication for a continual control of the distributed manipulation systems. The solution is intended for industrial robotic plants. A considered way of the wireless communication is based on ZigBee protocol. The protocol is tested for a real time bidirectional data communication within a manipulation system. The system consists of several moving manipulation units, several stationary auxiliary units and one control computer. The computer provides the cooperation of all units in the system in relation to the user requirements. The system is controlled by a simple feedback multi-level control realized in MATLAB - Simulink environment. The paper is focused on the realization of the boards of power electronics, transmitters, optical positional sensors, optical gates and their networking in accordance with ZigBee protocol definition. The behavior of the ZigBee is illustrated by several records from real experiments.

scholarly journals All-Optical Logic Gates: Designs, Classification, and Comparison

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Pallavi Singh ◽  
Devendra Kr. Tripathi ◽  
Shikha Jaiswal ◽  
H. K. Dixit
Keyword(s):  
Semiconductor Optical Amplifier ◽  
Optical Amplifiers ◽  
Semiconductor Optical Amplifiers ◽  
Logic Gates ◽  
Optical Amplifier ◽  
Current Status ◽  
Optical Logic ◽  
Optical Logic Gates ◽  
All Optical ◽  
Optical Gates

The paper reviews the current status and designs of all-optical gates. Various schemes with and without semiconductor optical amplifiers are discussed and compared. The optical gates are classified according to their design structures. It is divided into two major divisions that is, nonsemiconductor optical amplifier based gates and semiconductor optical amplifier based gates. In nonsemiconductor optical amplifier based gates, different schemes have been proposed to create non-linearity which is discussed. The semiconductor optical amplifier based gates of different design structures are discussed to show the probe pulse that is modulated in different ways to obtain results.

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