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Coherent Absorption of N00N States

2016; American Physical Society; Volume: 117; Issue: 2 Linguagem: Inglês

10.1103/physrevlett.117.023601

1092-0145

Thomas Roger, Sara Restuccia, Ashley Lyons, Daniel Giovannini, Jacquiline Romero, John Jeffers, Miles J. Padgett, Daniele Faccio,

Quantum optics and atomic interactions

Recent results in deeply subwavelength thickness films demonstrate coherent control and logical gate operations with both classical and single-photon light sources. However, quantum processing and devices typically involve more than one photon and nontrivial input quantum states. Here we experimentally investigate two-photon N00N state coherent absorption in a multilayer graphene film. Depending on the N00N state input phase, it is possible to selectively choose between single- or two-photon absorption of the input state in the graphene film. These results demonstrate that coherent absorption in the quantum regime exhibits unique features, opening up applications in multiphoton spectroscopy and imaging.