PT Unknown
AU Prokhodtsov, A
   Kovalyuk, V
   An, P
   Golikov, A
   Shakhovoy, R
   Sharoglazova, V
   Udaltsov, A
   Kurochkin, Y
   Goltsman, G
TI Silicon nitride Mach-Zehnder interferometer for on-chip quantum random number generation
SE J. Phys.: Conf. Ser.
PY 2020
BP 012118
VL 1695
DI 10.1088/1742-6596/1695/1/012118
DE Mach-Zehnder interferometer; MZI
AB In this work, we experimentally studied silicon nitride Mach-Zehnder interferometer (MZI) with two directional couplers and 400 ps optical delay line for telecom wavelength 1550 nm. We achieved the extinction ratio in a range of 0.76-13.86 dB and system coupling losses of 28-44 dB, depending on the parameters of directional couplers. The developed interferometer is promising for the use in a compact random number generator for the needs of a fully integrated quantum cryptography system, where compact design, as well as high generation speed, are needed.
ER