Parity-time–symmetry breaking in two-dimensional photonic crystals: Square lattice

2016 ◽  
Vol 93 (6) ◽  
Author(s):  
Adam Mock
Keyword(s):  
Photonic Crystals ◽  
Symmetry Breaking ◽  
Square Lattice ◽  
Two Dimensional ◽  
Time Symmetry

scholarly journals PBG structures of two-dimensional magnetic photonic crystals in square lattice

2005 ◽  
Vol 54 (10) ◽  
pp. 4770
Author(s):  
Che Ming ◽  
Zhou Yun-Song ◽  
Wang Fu-He ◽  
Gu Ben-Yuan
Keyword(s):  
Photonic Crystals ◽  
Square Lattice ◽  
Two Dimensional ◽  
Magnetic Photonic Crystals

scholarly journals Uncoupling Spectral Region in Two-Dimensional Square Lattice Photonic Crystals

2003 ◽  
Vol 7 (1) ◽  
pp. 34-37
Author(s):  
Dong-Yel Kang ◽  
Hong-Gyu Park ◽  
Han-Youl Ryu ◽  
Yong-Hee Lee
Keyword(s):  
Photonic Crystals ◽  
Spectral Region ◽  
Square Lattice ◽  
Two Dimensional

Absolute photonic band gaps of two-dimensional square-lattice photonic crystals with Taiji-shaped dielectric rods

2011 ◽  
Vol 284 (14) ◽  
pp. 3491-3496 ◽  
Author(s):  
Xing-Dao He ◽  
Shou-Xiao Du ◽  
Bin Liu ◽  
Shu-Jing Li ◽  
Shan Li
Keyword(s):  
Photonic Crystals ◽  
Band Gaps ◽  
Square Lattice ◽  
Two Dimensional ◽  
Photonic Band Gaps ◽  
Photonic Band

Active Photonic Crystals Based multiplexer

2006 ◽  
Vol 934 ◽  
Author(s):  
Principia Dardano ◽  
Vito Mocella ◽  
Luigi Sirleto ◽  
Luigi Moretti ◽  
Ivo Rendina
Keyword(s):  
Refractive Index ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Photonic Crystal ◽  
Photonic Crystals ◽  
Square Lattice ◽  
Two Dimensional ◽  
Optical Effect ◽  
Electro Optical Effect ◽  
Silicon Rods

ABSTRACTIn the last years, in order to achieve active tuning of photonic crystals devices, the possibility to use liquid crystal inside photonic crystals has been explored.On this line of argument, in this paper, we numerically investigate a tunable T-shaped waveguide diplexer, based on a two-dimensional square lattice photonic crystal composed of silicon rods in a liquid crystals. We prove that complete splitting of the entire input wavelengths range in two sub-ranges symmetrical with respect to the middle (switching) wavelength, and propagating in right and left arms respectively, can be achieved. Moreover, changing the refractive index of liquid crystals by electro-optical effect, a tuning of switching wavelength of about 60 nm can be obtained.

Optimize design super collimation in square lattice two-dimensional photonic crystals

Optik ◽  
2010 ◽  
Vol 121 (17) ◽  
pp. 1573-1576 ◽  
Author(s):  
Quan Xu ◽  
Kang Xie ◽  
Huajun Yang
Keyword(s):  
Photonic Crystals ◽  
Square Lattice ◽  
Two Dimensional ◽  
Optimize Design

Research on Second Harmonic Generation in Two-Dimensional Periodical Nonlinear Photonic Crystals Based on Intelligent Materials

2011 ◽  
Vol 282-283 ◽  
pp. 716-720
Author(s):  
Jing Juan Li ◽  
Li Wang
Keyword(s):  
Photonic Crystals ◽  
Harmonic Generation ◽  
Conversion Efficiency ◽  
Second Harmonic ◽  
Harmonic Wave ◽  
Square Lattice ◽  
Two Dimensional ◽  
High Conversion Efficiency ◽  
Nonlinear Photonic Crystals ◽  
Different Order

The works are focused on finding out proper shape of reversed domains to obtain effective harmonic generations with high conversion efficiency. The conversion efficiency of second harmonic wave in two-dimensional nonlinear photonic crystals consisting of square lattice and reversed domains of various shapes are studied numerically. The shapes of reversed domains are extended from circle, square to ellipse and rectangle. The conversion efficiency of different order quasi-phase matched process can be maximized by adjusting the orientation of noncircular reversed domains. Moreover, a cross-shaped reversed domain is utilized to improve the conversion efficiency of two-order non-collinear quasiphase matching.

Photonic band gaps of two-dimensional square-lattice photonic crystals based on 8-shaped scatters

Optik ◽  
2015 ◽  
Vol 126 (20) ◽  
pp. 2287-2290 ◽  
Author(s):  
Kaibin Chu ◽  
Quan Xu ◽  
Kang Xie ◽  
Cuiyun Peng
Keyword(s):  
Photonic Crystals ◽  
Band Gaps ◽  
Square Lattice ◽  
Two Dimensional ◽  
Photonic Band Gaps ◽  
Photonic Band

scholarly journals Creating a gap without symmetry breaking in two-dimensional photonic crystals

2000 ◽  
Vol 61 (15) ◽  
pp. 9847-9850 ◽  
Author(s):  
Xiangdong Zhang ◽  
Zhao-Qing Zhang
Keyword(s):  
Photonic Crystals ◽  
Symmetry Breaking ◽  
Two Dimensional

scholarly journals Abelian and non-abelian symmetries in infinite projected entangled pair states

2018 ◽  
Vol 5 (5) ◽  
Author(s):  
Claudius Hubig
Keyword(s):  
Symmetry Breaking ◽  
Spontaneous Symmetry Breaking ◽  
Ground State ◽  
Heisenberg Model ◽  
Computational Effort ◽  
Square Lattice ◽  
Two Dimensional ◽  
Computational Speed ◽  
Speed Up ◽  
Ground State Energies

We explore in detail the implementation of arbitrary abelian and non-abelian symmetries in the setting of infinite projected entangled pair states on the two-dimensional square lattice. We observe a large computational speed-up; easily allowing bond dimensions D=10D=10 in the square lattice Heisenberg model at computational effort comparable to calculations at D=6D=6 without symmetries. We also find that implementing an unbroken symmetry does not negatively affect the representative power of the state and leads to identical or improved ground-state energies. Finally, we point out how to use symmetry implementations to detect spontaneous symmetry breaking.

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