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Photonic coherent state transfer with Hamiltonian dynamics

: Weimann, Steffen; Kay, Alastair; Keil, Robert; Nolte, Stefan; Szameit, Alexander


Optics Letters 39 (2014), No.1, pp.123-126
ISSN: 0146-9592
Journal Article
Fraunhofer IOF ()

We report the observation of near-perfect light wave transfer by emulating quantum state transfer on a lattice with Hamiltonian dynamics, i.e., time-dependent intersite couplings. The structure transferring a single waveguide excitation over 11 sites with a fidelity of 0.93 works for classical light as well as single photons. As our implementation of perfect quantum state transfer uses a photonic setting, we introduce polarization as a new degree of freedom to the transport protocol. We demonstrate rotation operations of up to 40° on polarization during state transfer.