Controlled generation of photonic non-classical frequency combs for quantum information processing

Raktim Haldar; Robert Johanning; Anahita Khodadad Kashi; Hatam Mahmudlu; Philip Rübeling; Surajit Bose; Thomas Bækkegaard; Albert van Rees; Jörn P. Epping; Nikolaj Thomas Zinner; Klaus-J. Boller; Michael Kues

doi:10.1117/12.3008905

13 March 2024 Controlled generation of photonic non-classical frequency combs for quantum information processing

Raktim Haldar, Robert Johanning, Anahita Khodadad Kashi, Hatam Mahmudlu, Philip Rübeling, Surajit Bose, Thomas Bækkegaard, Albert van Rees, Jörn P. Epping, Nikolaj Thomas Zinner, Klaus-J. Boller, Michael Kues

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Proceedings Volume PC12911, Quantum Computing, Communication, and Simulation IV; PC129110U (2024) https://doi.org/10.1117/12.3008905
Event: SPIE Quantum West, 2024, San Francisco, California, United States

Abstract

Today’s quantum technology relies on the realization of large-scale non-classical systems in practical formats to enable quantum-accelerated computing, secure communications and enhanced sensing. Optical on-chip quantum frequency combs, characterized by many equidistantly spaced frequency modes, allow the storage of large amounts of quantum information and together with control mechanisms can provide practical large-scale quantum systems. In this contribution, we present recent advances on the controlled generation and use of quantum frequency combs for information processing. First, we demonstrate an electrically-pumped laser-integrated quantum light source of two- and high-dimensional maximally entangled photons. We exploit a hybrid InP-SiN approach which allows to include a filter, a gain section and a parametric photon pair source in a single system. Second, we demonstrate the generation of high-dimensional bi-photon quantum frequency combs with tunable entropies by exploiting a novel excitation technique and spectral filtering. Using this, we reveal unidirectional bosonic quantum walks, asymmetric energy transfer, and directional entanglement transport.

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Raktim Haldar, Robert Johanning, Anahita Khodadad Kashi, Hatam Mahmudlu, Philip Rübeling, Surajit Bose, Thomas Bækkegaard, Albert van Rees, Jörn P. Epping, Nikolaj Thomas Zinner, Klaus-J. Boller, and Michael Kues "Controlled generation of photonic non-classical frequency combs for quantum information processing", Proc. SPIE PC12911, Quantum Computing, Communication, and Simulation IV, PC129110U (13 March 2024); https://doi.org/10.1117/12.3008905

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KEYWORDS

Quantum entanglement

Quantum frequencies

Frequency combs

Quantum information processing

Quantum systems

Photons

Quantum control

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