All optical transistor pdf

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Whereas essential all-optical transistor functionalities have been already demonstrated across a range of platforms [2-4], using them to implement the complete Boolean logic gate set and in particular negation - switching off an optical signal with another optical signal - poses a major challenge [5]. Here, we realize a universal NOR logic gate by introducing the concept of non-ground-state All-optical polariton transistor D. Ballarini1,2, M. De Giorgi1,2, E been proposed and studied to develop all-optical switches, only to cite some: Mach-Zehnder interferometers in semiconductor materials [4], spin polarization in multiple quantum wells [5], waveguide-coupled ring resonator in silicon [6], photonic crystal nanocavities [7] and polarization 11 All-optical transistor action by off-resonant activation at laser threshold. David L. Andrews * and David S. Bradshaw Nanostructures and Photomolecular Systems, School of Chemistry, University of East Anglia, Norwich NR4 7TJ, United Kingdom *Corresponding author: [email protected] The development of viable all-optical data processing systems has immense importance for both the computing and While optical technology provides the best solution for the transmission of information, optical logics still calls for qualitative new concepts to be explored. Exciton-polaritons are composite particles, resulting from the strong coupling between excitons and photons, which have recently demonstrated exceptional properties like huge non-linearities, long range coherence and suppression of We present theoretical estimates for a low-loss, all-optical transistor using a microresonator device whose fields interact evanescently with rubidium vapor. We use a four-level, electromagnetically induced absorption scheme to couple the light fields of the transistor. We show results indicating that a weak control beam with less than single-photon intensities can switch a much stronger