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9 September 2019 A hybrid plasmonic-dielectric platform for high-speed, room-temperature quantum nanophotonics (Conference Presentation)
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Fast propagation speed and low decoherence rates arguably make photons the only realistic candidates for realizing quantum networks [1]. The operation bandwidth of the devices required for photonic quantum information processing is limited because of photons’ relatively weak interaction with matter. As a result, the bitrate of most of today’s photonic quantum networks is limited to the kHz range. Enhancing light-matter interaction is possible using dielectric resonators but the speed of the resulting devices will be eventually limited by the high quality factors. Plasmonic materials used along with the conventional dielectric photonic circuitry allow to dramatically enhance light-matter interaction with significantly weaker constraints on both the operating wavelength range and the achievable bitrate [2]. We will present our current and planned studies in the context of developing a plasmonic-dielectric platform for integrated quantum networks. We will focus on two recent realizations of high-speed photonic components: the brightest room-temperature single-photon source based on an NV center in nanodiamond coupled to a nano-patch antenna [3] and a 100 GHz integrated plasmonic modulator with insertion loss comparable to that of dielectric components [4]. Building quantum photonic devices with nanoscale footprint and operating speeds exceeding kT/h promises the realization of scalable THz-speed room-temperature quantum networks. In addition, we present our new results on the efficient analysis of quantum optical measurements using machine learning-based techniques. References [1] J. L. O’Brien, A. Furusawa, and J. Vučković, “Photonic quantum technologies,” Nat. Photonics, vol. 3, no. 12, pp. 687–695, Dec. 2009. [2] S. I. Bozhevolnyi and J. Khurgin, “Fundamental limitations in spontaneous emission rate of single-photon sources,” Optica, vol. 3, no. 12, 2016. [3] S. I. Bogdanov et al., “Ultrabright Room-Temperature Sub-Nanosecond Emission from Single Nitrogen-Vacancy Centers Coupled to Nanopatch Antennas,” Nano Lett., vol. 18, no. 8, pp. 4837–4844, Aug. 2018. [4] C. Haffner et al., “Low-loss plasmon-assisted electro-optic modulator,” Nature, vol. 556, no. 7702, pp. 483–486, Apr. 2018.
Conference Presentation
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Simeon Bogdanov, Mikhail Y. Shalaginov, Zhaxylyk Kudyshev, Alexei S. Lagutchev, Alexandra Boltasseva, and Vladimir M. Shalaev "A hybrid plasmonic-dielectric platform for high-speed, room-temperature quantum nanophotonics (Conference Presentation)", Proc. SPIE 11081, Active Photonic Platforms XI, 1108117 (9 September 2019);

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