Berlin 2014 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 48: Quantum effects: Interference and correlations I
Q 48.1: Talk
Thursday, March 20, 2014, 16:30–16:45, DO26 208
Multi-Photon Interference in Integrated Waveguides — •Jasmin D. A. Meinecke1, Jacques Carolan1, Pete Shadbolt1, Nicholas J. Russell1, Nur Ismail3, Kerstin Wörhoff3, Terry Rudolph2, Mark G. Thompson1, Jeremy L. O'Brien1, Jonathan C. F. Matthews1, and Anthony Laing1 — 1Centre for Quantum Photonics, University of Bristol, Tyndall Avenue, Bristol, BS8 1TL, UK — 2Institute for Mathematical Sciences, Imperial College London, London SW7 2BW, UK — 3Integrated Optical Microsystems Group, MESA+ Institute for Nanotechnology, University of Twente, Enschede, The Netherlands
Multi-particle interference effects are fundamental for quantum information science. Interferometric stability and long coherence times are necessary in order to achieve large scale circuitry. Here photons and in particular integrated photonics are an attractive platform allowing complex circuits and precise control of quantum states.
Multiple photons propagating in planar and 3-dimensional waveguide arrays have been shown to enable observation of large scale quantum interference effects [1,2] known as quantum walks with applications in quantum computation and simulation. Here we present experimental results of three and four photons injected into waveguide circuits implementing quantum walks and also general linear optical operations [3].
[1] J. D. A. Meinecke et al., Phys. Rev. A 88, 012308 (2013) [2] K. Poulios et al., arXiv:1308.2554 [3] J. Carolan et al., arXiv:1311.2913