Programmable unitary spatial mode manipulation
Jean-Francois Morizur,Lachlan Nicholls,Pu Jian,Seiji Armstrong,Nicolas Treps,Boris Hage,Magnus T. L. Hsu,Warwick P. Bowen,Jiri Janousek,Hans-A. Bachor +9 more
TLDR
This work builds an experimental implementation of the unitary programmable mode converter (UPMC) and shows that, even when limited to three reflections on an array of 12 pixels, the UPMC is capable of performing single mode tranforms with an efficiency greater than 80% for the first four modes of the transverse electromagnetic basis.Abstract:
Free space propagation and conventional optical systems such as lenses and mirrors all perform spatial unitary transforms. However, the subset of transforms available through these conventional systems is limited in scope. We present here a unitary programmable mode converter (UPMC) capable of performing any spatial unitary transform of the light field. It is based on a succession of reflections on programmable deformable mirrors and free space propagation. We first show theoretically that a UPMC without limitations on resources can perform perfectly any transform. We then build an experimental implementation of the UPMC and show that, even when limited to three reflections on an array of 12 pixels, the UPMC is capable of performing single mode tranforms with an efficiency greater than 80% for the first four modes of the transverse electromagnetic basis.read more
Citations
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TL;DR: Generic chips can accelerate the development of future photonic circuits by providing a higher-level platform for prototyping novel optical functionalities without the need for custom chip fabrication.
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Twisted photons: new quantum perspectives in high dimensions
TL;DR: In this paper, a review of the theoretical differences between qubits and higher dimensional systems, qudits, in different quantum information scenarios is given. And the authors consider the advantages of such higher-dimensional systems, which include higher information capacity and greater protection from eavesdropping.
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Twisted Photons: New Quantum Perspectives in High Dimensions
TL;DR: This review article gives a brief overview of the theoretical differences between qubits and higher dimensional systems, qudits, in different quantum information scenarios and describes recent experimental developments in this field over the past three years.
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Laguerre-Gaussian mode sorter.
TL;DR: In this paper, the authors present a multi-plane light conversion scheme for large number of spatial modes in a scalable fashion, where the number of phase plates required scales with the dimensionality of the transformation.
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Efficient and mode selective spatial mode multiplexer based on multi-plane light conversion.
Guillaume Labroille,Bertrand Denolle,Pu Jian,Philippe Genevaux,Nicolas Treps,Jean-Francois Morizur +5 more
TL;DR: In this paper, the authors designed and built a new type of spatial mode multiplexer based on MPLC, with very low intrinsic loss and high mode selectivity, and demonstrated its performance for the first 6 eigenmodes of a few-mode fiber.
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