Isolated structures in two-dimensional optical superlattice

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• 作者：Xin-Hao Zou ; Bao-Guo Yang ; Xia Xu ; Peng-Ju Tang ; Xiao-Ji Zhou
• 关键词：optical superlattice ; isolated structures ; exotic lattice geometries ; quantum logic gates
• 刊名：Frontiers of Physics
• 出版年：2017
• 出版时间：October 2017
• 年：2017
• 卷：12
• 期：5
• 全文大小：1,294 KB
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Chinese Library of Science
  
• 出版者：Higher Education Press, co-published with Springer-Verlag GmbH
• ISSN：2095-0470
• 卷排序：12

文摘

Overlaying commensurate optical lattices with various configurations called superlattices can lead to exotic lattice topologies and, in turn, a discovery of novel physics. In this study, by overlapping the maxima of lattices, a new isolated structure is created, while the interference of minima can generate various “sublattice” patterns. Three different kinds of primitive lattices are used to demonstrate isolated square, triangular, and hexagonal “sublattice” structures in a two-dimensional optical superlattice, the patterns of which can be manipulated dynamically by tuning the polarization, frequency, and intensity of laser beams. In addition, we propose the method of altering the relative phase to adjust the tunneling amplitudes in “sublattices”. Our configurations provide unique opportunities to study particle entanglement in “lattices” formed by intersecting wells and to implement special quantum logic gates in exotic lattice geometries.