J O Owens et al 2011 New J. Phys. 13 075003 doi:10.1088/1367-2630/13/7/075003
Two-photon quantum walks in an elliptical direct-write waveguide array
Focus on Integrated Quantum OpticsJ O Owens1, M A Broome1,5, D N Biggerstaff1, M E Goggin1,2, A Fedrizzi1, T Linjordet3, M Ams4, G D Marshall4, J Twamley3, M J Withford4 and A G White1
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Integrated optics provides an ideal testbed for the emulation of quantum systems via continuous-time quantum walks. Here, we study the evolution of two-photon states in an elliptic array of waveguides. We characterize the photonic chip via coherent light tomography and use the results to predict distinct differences between temporally indistinguishable and distinguishable two-photon inputs, which we then compare with experimental observations. This work highlights the feasibility of emulation of coherent quantum phenomena in three-dimensional waveguide structures.
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Issue 7 (July 2011)
Received 25 February 2011
Published 13 July 2011
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Two-photon quantum walks in an elliptical direct-write waveguide array
J O Owens et al 2011 New J. Phys. 13 075003
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