2019 |
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Elezov M, Scherbatenko M, Sych D, Goltsman G, Arakelyan S, Evlyukhin A, et al. Towards the fiber-optic Kennedy quantum receiver. In: EPJ Web Conf. Vol 220.; 2019. 03011 (1 to 2).
Abstract: We consider practical aspects of using standard fiber-optic elements and superconducting nanowire single-photon detectors for the development of a practical quantum receiver based on the Kennedy scheme. Our receiver allows to discriminate two phase-modulated coherent states of light at a wavelength of 1.5 microns in continuous mode with bit rate 200 Kbit/s and error rate about two times below the standard quantum limit.
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Elmanov I, Elmanova A, Komrakova S, Golikov A, Kaurova N, Kovalyuk V, et al. Method for determination of resists parameters for photonic – integrated circuits e-beam lithography on silicon nitride platform. In: EPJ Web Conf. Vol 220.; 2019. 03012.
Abstract: In the work the thicknesses of the e-beam resists ZEP 520A and ma-N 2400 by using non-destructive method were measured, as well as recipe for the high ratio between the Si3N4 and the resists etching rate was determined. The work has a practical application for e-beam lithography of photonic-integrated circuits and nanophotonics devices based on silicon nitride platform.
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Elmanova A, Elmanov I, Komrakova S, Golikov A, Javadzade J, Vorobyev V, et al. Integration of nanodiamonds with NV-centers on optical silicon nitride structures. In: EPJ Web Conf. Vol 220.; 2019. 03013.
Abstract: In this work we had developed optical structures from silicon nitride for further integration of the nanodiamonds containing NV-centers with them. We have introduced method of the nanodiamonds solution application on the substrates. The work has practical meaning in nanophotonics sphere and in development of optical devices with single-photon sources.
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Prokhodtsov A, Golikov A, An P, Kovalyuk V, Goltsman G, Arakelyan S, et al. Effect of silicon oxide coating on a silicon nitride focusing grating coupler efficiency. In: EPJ Web Conf. Vol 220.; 2019. 02009.
Abstract: The dependence of the efficiency of the focusing grating couplers on the period and filling factor before and after deposition of the upper silicon oxide layer was experimentally studied. The obtained data are of practical importance for tunable integrated-optical devices based on silicon nitride platform.
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2017 |
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Chuprina IN, An PP, Zubkova EG, Kovalyuk VV, Kalachev AA, Gol'tsman GN. Optimisation of spontaneous four-wave mixing in a ring microcavity. In: J. Phys.: Conf. Ser. Vol 47.; 2017. p. 887–91.
Abstract: Abstract. A theory of spontaneous four-wave mixing in a ring microcavity is developed. The rate of emission of biphotons for pulsed and monochromatic pumping with allowance for the disper- sion of group velocities is analytically calculated. In the first case, pulses in the form of an increasing exponential are considered, which are optimal for excitation of an individual resonator mode. The behaviour of the group velocity dispersion as a function of the width and height of the waveguide is studied for a specific case of a ring microcavity made of silicon nitride. The results of the numeri- cal calculation are in good agreement with the experimental data. The ring microcavity is made of two types of waveguides: com- pletely etched and half etched. It is found that the latter allow for better control over the parameters in the manufacturing process, making them more predictable.
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