scholarly journals Topological protection of continuous frequency entangled biphoton states

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Zhen Jiang ◽  
Yizhou Ding ◽  
Chaoxiang Xi ◽  
Guangqiang He ◽  
Chun Jiang
Keyword(s):  
Photonic Crystals ◽  
Four Wave Mixing ◽  
Quantum States ◽  
Wave Mixing ◽  
Special Interests ◽  
Topological Quantum ◽  
Entangled Quantum States ◽  
Entangled Photon Pairs ◽  
Simulation Results ◽  
Continuous Frequency

Abstract Topological quantum optics that manipulates the topological protection of quantum states has attracted special interests in recent years. Here we demonstrate valley photonic crystals implementing topologically protected transport of the continuous frequency entangled biphoton states. We numerically simulate the nonlinear four-wave mixing interaction of topological valley kink states propagating along the interface between two valley photonic crystals. We theoretically clarify that the signal and idler photons generated from the four-wave mixing interaction are continuous frequency entangled. The numerical simulation results imply that the entangled biphoton states are robust against the sharp bends and scattering, giving clear evidence of topological protection of entangled photon pairs. Our proposal paves a concrete way to perform topological protection of entangled quantum states operating at telecommunication wavelengths.

scholarly journals Kerr and four-wave mixing spectroscopy at the band edge of one-dimensional photonic crystals

2005 ◽  
Vol 86 (23) ◽  
pp. 231106 ◽  
Author(s):  
Luca Razzari ◽  
Denis Träger ◽  
Magali Astic ◽  
Philippe Delaye ◽  
Robert Frey ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Four Wave Mixing ◽  
Band Edge ◽  
Wave Mixing ◽  
One Dimensional

scholarly journals Effect of Four Wave Mixing in WDM Systems for Higher number of Channels

2013 ◽  
pp. 61-64
Author(s):  
A. Panda ◽  
D. P. Mishra
Keyword(s):  
Optical Networks ◽  
Cross Talk ◽  
Four Wave Mixing ◽  
Influential Factors ◽  
Access Networks ◽  
Wave Mixing ◽  
Channel Spacing ◽  
Early Design ◽  
Early Design Stages ◽  
Simulation Results

The integration of wireless and optical networks increases the capacity and mobility as well as decreases costs in the access networks. However, there are nonlinearity and obstacles preventing them from being perfect media. A serious issue for WDM systems is the presence of resonant four wave mixing (FWM) terms, as a result of interactions between different channels. FWM presents a major source of non-linear cross talk since they often fall near or on top of the desired signals. So the best solution is to avoid the FWM generation from early design stages. The effect of four wave mixing (FWM) as one of the influential factors in the WDM for RoF has been studied here using Optisystem. The investigation of FWM effect with different number of channels at various channel spacing has also been done. The simulation results reveal that the less number of users at input cause less FWM but in today’s technology, it is important for the circuit to handle WDM.

Comparison of Different FWM Realization Methods in Optical Fibre

1970 ◽  
Vol 111 (5) ◽  
pp. 37-40 ◽  
Author(s):  
A. Supe ◽  
J. Porins
Keyword(s):  
Optical Fibre ◽  
Theoretical Calculations ◽  
Four Wave Mixing ◽  
Optical Fibres ◽  
Nonlinear Phenomenon ◽  
Wave Mixing ◽  
Physical Reason ◽  
Simulation Results ◽  
Incident Waves ◽  
Interaction Intensity

This paper describes detailed study in optical fibre nonlinear phenomenon - four wave mixing (FWM). It includes explanation of physical reason and realisation methods in optical fibres. Comparison of two generation schemes in terms of realizing FWM process in optical fibres has given. Results between theoretical calculations and simulation results by OptSim 5.0 software show that FWM interaction intensity is almost invariable for wavelength separation between incident waves till Dl=0.8 nm. But for larger wavelength separation it sharply decrease. Ill. 9, bibl. 6 (in English; abstracts in English and Lithuanian).http://dx.doi.org/10.5755/j01.eee.111.5.352

scholarly journals Translation of quantum states by four-wave mixing in fibers

2005 ◽  
Vol 13 (22) ◽  
pp. 9131 ◽  
Author(s):  
C. J. McKinstrie ◽  
J. D. Harvey ◽  
S. Radic ◽  
M. G. Raymer
Keyword(s):  
Four Wave Mixing ◽  
Quantum States ◽  
Wave Mixing

scholarly journals Phase-matched nondegenerate four-wave mixing in one-dimensional photonic crystals

2006 ◽  
Vol 89 (13) ◽  
pp. 131122 ◽  
Author(s):  
C. Becker ◽  
M. Wegener ◽  
S. Wong ◽  
G. von Freymann
Keyword(s):  
Photonic Crystals ◽  
Four Wave Mixing ◽  
Wave Mixing ◽  
One Dimensional

scholarly journals Reduction of Four-Wave Mixing in DWDM System using Electro-Optic Phase Modulator

2018 ◽  
Vol 8 (4) ◽  
pp. 2384
Author(s):  
Naif Alsowaidi ◽  
Tawfig Eltaif ◽  
Mohd Ridzuan Mokhtar ◽  
Belal A. Hamida
Keyword(s):  
Bit Error Rate ◽  
Direct Detection ◽  
Four Wave Mixing ◽  
Error Rates ◽  
Phase Modulator ◽  
Wave Mixing ◽  
Electro Optic ◽  
Phase Deviation ◽  
Simulation Results ◽  
Dwdm System

<span>In this paper, electro-optic phase modulator (EOPM) is used to reduce the effect of four-wave mixing (FWM), which is placed after 64 DWDM-channels multiplexer. It was found that the FWM is very sensitive to the phase deviation of the EOPM, and it can be reduced by introducing a phase shift between pulses. The simulation results confirmed the ability of the EOPM in improving the system performanceas indicated by the bit error rates. In term of comparison, the system of 64 channels based intensity modulated/ direct detection (IM/DD) transmission achieved bit error rate of 10<sup>-26</sup> over 30 km and 70km without and with EOPM, respectively.</span>

scholarly journals High-Purity Telecom-Band Entangled Photon-Pairs via Four-Wave Mixing in Dispersion-Shifted Fiber

2005 ◽  
Author(s):  
Kim Fook Lee ◽  
Jun Chen ◽  
Chuang Liang ◽  
Xiaoying Li ◽  
Paul L. Voss ◽  
...  
Keyword(s):  
High Purity ◽  
Four Wave Mixing ◽  
Wave Mixing ◽  
Photon Pairs ◽  
Entangled Photon Pairs
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