50-GHz-spaced comb of high-dimensional frequency-bin entangled photons from an on-chip silicon nitride microresonator

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...

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Bibliographic Details
Published in:Optics express 2018-01, Vol.26 (2), p.1825-1840
Main Authors: Imany, Poolad, Jaramillo-Villegas, Jose A, Odele, Ogaga D, Han, Kyunghun, Leaird, Daniel E, Lukens, Joseph M, Lougovski, Pavel, Qi, Minghao, Weiner, Andrew M
Format: Article
Language:English
Subjects:
MATERIALS SCIENCE
MATHEMATICS AND COMPUTING
Nonlinear optics
parametric processes
Quantum information and processing
Quantum optics
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Summary: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.
ISSN:1094-4087
1094-4087
DOI:10.1364/oe.26.001825