Toward quantum networking with frequency-bin qudits

Karthik V. Myilswamy; Suparna Seshadri; Hsuan-Hao Lu; Junqiu Liu; Tobias J. Kippenberg; Joseph M. Lukens; Andrew M. Weiner

doi:10.1117/12.3008755

13 March 2024 Toward quantum networking with frequency-bin qudits

Karthik V. Myilswamy, Suparna Seshadri, Hsuan-Hao Lu, Junqiu Liu, Tobias J. Kippenberg, Joseph M. Lukens, Andrew M. Weiner

Author Affiliations +

Proceedings Volume 12911, Quantum Computing, Communication, and Simulation IV; 129111A (2024) https://doi.org/10.1117/12.3008755
Event: SPIE Quantum West, 2024, San Francisco, California, United States

Abstract

Quantum networking holds tremendous promise in transforming computation and communication. Entangled-photon sources are critical for quantum repeaters and networking, while photonic integrated circuits are vital for miniaturization and scalability. In this talk, we focus on generating and manipulating frequency-bin entangled states within integrated platforms. We encode quantum information as a coherent superposition of multiple optical frequencies; this approach is favorable due to its amenability to high-dimensional entanglement and compatibility with fiber transmission. We successfully generate and measure the density matrix of biphoton frequency combs from integrated silicon nitride microrings, fully reconstructing the state in an 8 × 8 two-qudit Hilbert space, the highest so far for frequency bins. Moreover, we employ Vernier electro-optic phase modulation methods to perform time-resolved measurements of biphoton correlation functions. Currently, we are exploring bidirectional pumping of microrings to generate indistinguishable entangled pairs in both directions, aiming to demonstrate key networking operations such as entanglement swapping and Greenberger–Horne–Zeilinger state generation in the frequency domain.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Karthik V. Myilswamy, Suparna Seshadri, Hsuan-Hao Lu, Junqiu Liu, Tobias J. Kippenberg, Joseph M. Lukens, and Andrew M. Weiner "Toward quantum networking with frequency-bin qudits", Proc. SPIE 12911, Quantum Computing, Communication, and Simulation IV, 129111A (13 March 2024); https://doi.org/10.1117/12.3008755

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