50-Ghz-Spaced Comb of High-Dimensional Frequency-Bin Entangled Photons from an On-Chip Silicon Nitride Microresonator

Authors

Poolad Imany, Purdue UniversityFollow
Jose A. Jaramillo-Villegas,, Purdue UniversityFollow
Ogaga D. Odele, Purdue UniversityFollow
Kyunghun Han, Purdue UniversityFollow
Daniel E. Leaird, Purdue University - Main CampusFollow
Joseph M. Lukens, Oak Ridge National Laboratory
Pavel Lougovski, Oak Ridge National Laboratory
Minghao Qi, Birck Nanotechnology Center, Purdue UniversityFollow
Andrew M. Weiner, Purdue University - Main CampusFollow

Abstract

Quantum frequency combs from chip-scale integrated sources are promising candidates for scalable and robust quantum information processing (QIP). However, to use these quantum combs for frequency domain QIP, demonstration of entanglement in the frequency basis, showing that the entangled photons are in a coherent superposition of multiple frequency bins, is required. We present a verification of qubit and qutrit frequency-bin entanglement using an on-chip quantum frequency comb with 40 mode pairs, through a two-photon interference measurement that is based on electro-optic phase modulation. Our demonstrations provide an important contribution in establishing integrated optical microresonators as a source for high-dimensional frequency-bin encoded quantum computing, as well as dense quantum key distribution.

Comments

This is the Publisher Version. Version of record:

Imany P. et al. (2018). “50-GHz-spaced comb of high-dimensional frequency-bin entangled photons from an on-chip silicon nitride microresonator,” Optics Express 26(1825-1840). doi: https://doi.org/10.1364/OE.26.001825

Date of this Version

2018