Abstract
Considerable research work is being devoted to the integration of quantum optical components on a silicon chip [1]. Many results have been achieved on the generation of quantum states of light in silicon photonic devices, but all the sources demonstrated so far need off-chip filtering stages to clean the generated photons before detection. This necessity for off-chip components hinders usability in a completely integrated platform. In this work [2] we demonstrate for the first time on-chip generation of photon pairs via a silicon microring resonator fully integrated with spectral filters for the pump on the same chip. The sample, shown in Fig. 1 a, is a reconfigurable silicon photonic integrated circuit based on Bragg reflectors and tunable ring resonators. The combination of these devices results in pump rejection by more than 95 dB in a single chip, reducing the pump intensity to less than the flux of the photon pairs generated by spontaneous four wave mixing (Fig 1 b).
© 2015 IEEE
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