Experimental realization of Bloch oscillations in a parity-time synthetic silicon photonic lattice

Ye-Long Xu, William S. Fegadolli, Lin Gan, Ming-Hui Lu (), Xiao-Ping Liu (), Zhi-Yuan Li, Axel Scherer and Yan-Feng Chen
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Ye-Long Xu: National Laboratory of Solid State Microstructures, Nanjing University
William S. Fegadolli: California Institute of Technology
Lin Gan: Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences
Ming-Hui Lu: National Laboratory of Solid State Microstructures, Nanjing University
Xiao-Ping Liu: National Laboratory of Solid State Microstructures, Nanjing University
Zhi-Yuan Li: Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences
Axel Scherer: California Institute of Technology
Yan-Feng Chen: National Laboratory of Solid State Microstructures, Nanjing University

Nature Communications, 2016, vol. 7, issue 1, 1-6

Abstract: Abstract As an important electron transportation phenomenon, Bloch oscillations have been extensively studied in condensed matter. Due to the similarity in wave properties between electrons and other quantum particles, Bloch oscillations have been observed in atom lattices, photonic lattices, and so on. One of the many distinct advantages for choosing these systems over the regular electronic systems is the versatility in engineering artificial potentials. Here by utilizing dissipative elements in a CMOS-compatible photonic platform to create a periodic complex potential and by exploiting the emerging concept of parity-time synthetic photonics, we experimentally realize spatial Bloch oscillations in a non-Hermitian photonic system on a chip level. Our demonstration may have significant impact in the field of quantum simulation by following the recent trend of moving complicated table-top quantum optics experiments onto the fully integrated CMOS-compatible silicon platform.

Date: 2016
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DOI: 10.1038/ncomms11319

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