• Technical Conference: 

    09 – 14 May 2021

  • Exhibition: 

    10 – 14 May 2021

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High-Dimensional Entanglement

Presider: Nadia Belabas, Centre National Recherche Scientifique

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High Dimensional Frequency-bin Entanglement From Domain Engineered Parametric Downconversion (FM1N.1)
Presenter: Christopher Morrison, Heriot-Watt University

We demonstrate the generation of high-dimensional frequency entangled photon pairs using domain engineered parametric down conversion. A natural application of this source would be multi-user quantum key distribution using ITU standard wavelength division multiplexing systems.

Authors:Christopher Morrison, Heriot-Watt University / Francesco Graffitti, Heriot-Watt University / Joseph Ho, Heriot-Watt University / Peter Barrow, Heriot-Watt University / Alessandro Fedrizzi, Heriot-Watt University


High-Dimensional Frequency-bin Tomography With Random Measurements (FM1N.2)
Presenter: Hsuan-Hao Lu, Purdue University

Utilizing electro-optic modulation and pulse shaping for random measurements, we reconstruct the full density matrix of biphoton frequency combs for entangled qudits up to d=5. Our method relies on simple experimental settings and can be applied to any frequency-bin quantum system.

Authors:Hsuan-Hao Lu, Purdue University / Joseph Lukens, Oak Ridge National Laboratory / Andrew Weiner, Purdue University


Multipartite d-Level Photon Cluster States and Practical Entanglement Detection Through Witness Operators (FM1N.3)
Presenter: Stefania Sciara, INRS-EMT

We develop witness operators enabling the practical detection of arbitrary complex photon states and apply them to validate the entanglement of the first multipartite d-level cluster state achieved through simultaneous time- and frequency-entanglement.

Authors:Stefania Sciara, INRS-EMT / Christian Reimer, HyperLight Corporation / Piotr Roztocki, INRS-EMT / David Moss, Swinburne University of Technology / Lucia Caspani, University of Strathclyde / William J. Munro, NTT Corporation / Michael Kues, Leibniz University Hannover / Roberto Morandotti, INRS-EMT


Enabling Scalability of Photonic Frequency-Domain Quantum Processing (FM1N.4)
Presenter: Anahita Khodadad Kashi, Leibniz University Hannover

Via a reconfigurable photonic frequency circuit, we show spectral bosonic and fermionic Houng-Ou-Mandel interference between independently created pure single photons, demonstrating photon number scalability and versatility of the frequency processing approach.

Authors:Anahita Khodadad Kashi, Leibniz University Hannover / Michael Kues, Leibniz University Hannover


Benchmarking Quantum Correlations in Scalable Photonic Systems (FM1N.5)
Presenter: Jan Sperling, University of Paderborn

A benchmark protocol is established to certify quantum correlations, demanding an exponential increase of resources. We handle this scaling and show nonclassicality of up to ten photons distributed over more than sixty modes.

Authors:Jan Sperling, University of Paderborn / Johannes Tiedau, University of Paderborn / Melanie Engelkemeier, University of Paderborn / Benjamin Brecht, University of Paderborn / Christine Silberhorn, University of Paderborn


Tree-Type Photonic Cluster State Generation With a Single Quantum Emitter (FM1N.6)
Presenter: Yuan Zhan, University of Colorado Boulder

We propose to deterministically generate photonic tree states and repeater graph states of arbitrary size with a single quantum emitter. Photonic entanglement is established through emission and rescattering from the same emitter.

Authors:Yuan Zhan, University of Colorado Boulder / Shuo Sun, University of Colorado Boulder


Inverse Design of Quantum Holograms in Three-Dimensional Nonlinear Photonic Crystals (FM1N.7)
Presenter: Eyal Rozenberg, Technion

We introduce a systematic approach for designing 3D nonlinear photonic crystals and pump beams for generating desired quantum correlations between structured photon-pairs. Our model is fully differentiable, allowing accurate and efficient learning and discovery of novel designs.

Authors:Eyal Rozenberg, Technion / Aviv Karnieli, Tel Aviv University / Ofir Yesharim, Tel Aviv University / Sivan Trajtenberg-Mills, Tel Aviv University / Daniel Freedman, Google Research / Alex Bronstein, Technion / Ady Arie, Tel Aviv University