Abstract
In recent years, much attention has been directed to plasmonics in the quantum regime to make a breakthrough in the quantum information technologies [1]. The generation of a single surface plasmon polariton (SPP), the two-SPP quantum interference, and the quantum media conversion between a photon and a SPP have been achieved [2, 3], which reveals the new way of the photonic quantum simulation and computation. The plasmonic circuitry made of long-range surface plasmon polariton (LR-SPP) waveguides is a candidate for on-chip devices for such applications because they intrinsically have a very low optical loss [4]. Here, we report on another beneficial feature of the LR-SPP waveguide, that is the photon indistinguishability enhancement. The very high indistinguishability of quanta (SPPs and photons) are required for the quantum interference which is essential for the quantum information processing.
© 2015 IEEE
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