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Controllable Photon-Pair Generation and Quantum Walks in Nonlinear Waveguide Arrays

Alexander S. Solntsev, Frank Setzpfandt, AS Clark, Che Wen Wu, M. J. Collins, C. Xiong, Falk X. Eilenberger, A. Schreiber, Fabian Katzschmann, Roland Schiek, W. Sohler, Arnan Mitchell, Christine Silberhorn, Benjamin J. Eggleton, Thomas Pertsch, Andrey A. Sukhorukov, Dragomir N. Neshev, Yuri S. Kivshar

Published Jan 1, 2013• 0 citations

Abstract

References [1] A. Peruzzo, M. Lobino, J. C. F. Matthews et al., Science 329, 1500 (2010). [2] A. S. Solntsev, A. A. Sukhorukov, D. N. Neshev, Y. S. Kivshar, Phys. Rev. Lett. 108, 023601 (2012). [3] M. Grafe, A. S. Solntsev, R. Keil, A. A. Sukhorukov, M. Heinrich, A. Tunnermann, S. Nolte, A. Szameit, Yu. S. Kivshar, Scientific Reports 2, 562 (2012). A. S. Solntsev1,+, F. Setzpfandt2, A. S. Clark3, C. W. Wu1, M. J. Collins3, C. Xiong3, F. Eilenberger2, A. Schreiber4, F. Katzschmann4, R. Schiek5, W. Sohler4, A. Mitchell6, C. Silberhorn4, B. J. Eggleton3, T. Pertsch2, A. A. Sukhorukov1, D. N. Neshev1, and Yu. S. Kivshar1 1Nonlinear Physics Centre and Centre for Ultrahigh bandwidth Devices for Optical Systems (CUDOS), Australian National University, Australia; 2Institute of Applied Physics, Friedrich-Schiller-University Jena, Germany; 3CUDOS, University of Sydney, Australia; 4Universitat Paderborn, Germany; 5University of Applied Sciences Regensburg, Germany; 6CUDOS, RMIT University, Australia +Phone: +61-2-6125-3423 Email: sun124@physics.anu.edu.au

DOI: 10.13140/rg.2.1.4149.5202

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References [1] A. Peruzzo, M. Lobino, J. C. F. Matthews et al., Science 329, 1500 (2010). [2] A. S. Solntsev, A. A. Sukhorukov, D. N. Neshev, Y. S. Kivshar, Phys. Rev. Lett. 108, 023601 (2012). [3] M. Grafe, A. S. Solntsev, R. Keil, A. A. Sukhorukov, M. Heinrich, A. Tunnermann, S. Nolte, A. Szameit, Yu. S. Kivshar, Scientific Reports 2, 562 (2012). A. S. Solntsev1,+, F. Setzpfandt2, A. S. Clark3, C. W. Wu1, M. J. Collins3, C. Xiong3, F. Eilenberger2, A. Schreiber4, F. Katzschmann4, R. Schiek5, W. Sohler4, A. Mitchell6, C. Silberhorn4, B. J. Eggleton3, T. Pertsch2, A. A. Sukhorukov1, D. N. Neshev1, and Yu. S. Kivshar1 1Nonlinear Physics Centre and Centre for Ultrahigh bandwidth Devices for Optical Systems (CUDOS), Australian National University, Australia; 2Institute of Applied Physics, Friedrich-Schiller-University Jena, Germany; 3CUDOS, University of Sydney, Australia; 4Universitat Paderborn, Germany; 5University of Applied Sciences Regensburg, Germany; 6CUDOS, RMIT University, Australia +Phone: +61-2-6125-3423 Email: sun124@physics.anu.edu.au

As quantum optics grows and develops, new sophisticated optical schemes require an increasing number of optical elements. Integrated photonic circuits have the capacity to provide a solution to this challenge, as they are intrinsically scalable and interferometrically stable. Integrated realization of multi-photon entanglement, quantum factoring algorithms, and polarization entanglement has already been demonstrated. One of particularly interesting structures in integrated photonics is the waveguide array, which enables flexible shaping of optical beam and pulses in space. Recently waveguide arrays have been shown to generate unusual and strongly non-classical spatial correlations of photon pairs propagating in the regime of quantum walks [1].

A happy accident in the laboratory has led to a breakthrough discovery that not only solved a problem that stood for more than half a century, but has major implications for the development of quantum computers and sensors. [55] Significant technical and financial issues remain towards building a large, fault-tolerant quantum computer and one is unlikely to be built within the coming decade. [54] Chemists at Friedrich Schiller University in Jena (Germany) have now synthesised a molecule that can perform the function of a computing unit in a quantum computer. [53] The research team developed the first optical microchip to generate, manipulate and detect a particular state of light called squeezed vacuum, which is essential for HYPERLINK https://phys.org/tags/quantum/ quantum computation. [52] Australian scientists have investigated new directions to scale up qubits-utilising the spin-orbit coupling of atom qubits-adding a new suite of tools to the armory. [51] A team of international researchers led by engineers from the National University of Singapore (NUS) have invented a new magnetic device to manipulate digital information 20 times more efficiently and with 10 times more stability than commercial spintronic digital memories. [50] Working in the lab of Mikhail Lukin, the George Vasmer Leverett Professor of Physics and co-director of the Quantum Science and Engineering Initiative, Evans is lead author of a study, described in the journal Science, that demonstrates a method for engineering an interaction between two qubits using photons. [49] Researchers with the Department of Energy's Oak Ridge National Laboratory have demonstrated a new level of control over photons encoded with quantum information. [48] Researchers from Intel Corp. and the University of California, Berkeley, are looking beyond current transistor technology and preparing the way for a new type of memory and logic circuit that could someday be in every computer on the planet. [47]