Time: Friday, 13/Sept/2024: 8:45am - 10:15am Session Chair: Ignacio Moreno, Universidad Miguel Hernandez, Spain Session Chair: Kamel Bencheikh, Centre of Nanoscience and Naotechnolgy C2N-CNRS, France |
Location: A.1.1a |
Invited
ID: 253 / FS1-TOM8: 1
Focused Sessions 1: Holography and structured light
Invited - Structured neutron waves and neutron holography
1University of Waterloo, Canada; 2University at Buffalo, United States of America; 3National Institute of Standards and Technology, USA; 4Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA; 5Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, Switzerland; 6Juelich Centre for Neutron Science at Heinz Maier-Leibnitz Zentrum, Garching, Germany
The development of modern spintronics materials require novel characterization tools capable of characterizing nanometer-sized spin textures. Neutrons are a convenient probe for this task due to their angstrom-sized wavelengths, electric neutrality and robustly controllable spin state. Recent research has focused on enabling access to new degrees of freedom in order to provide a neutron toolbox capable of characterizing emerging materials. This includes the development of holographic and tomographic techniques for characterizing the 3D bulk spin textures and the techniques for creating structured neutron beams with helical and skyrmion-like spin-orbit states. Here we provide a concise overview of this work and discuss future prospects and applications.
ID: 419 / FS1-TOM8: 2
Focused Sessions 1: Holography and structured light
Quantum state engineering using a spatially structured quantum eraser
Università di Napoli Federico II, Italy
By combining the concepts of structured light and quantum interference, we design and experimentally demonstrate a simple and robust scheme that tailors quantum interference to engineer photonic states with spatially structured coalescence along the transverse profile. To achieve this, we locally tune distinguishability of a photon pair by spatially structuring the polarisation and creating a structured quantum eraser.
ID: 265 / FS1-TOM8: 3
Focused Sessions 1: Holography and structured light
Quantum steering with vector vortex states with the detection loophole closed
1Centre for Quantum Dynamics and Centre for Quantum Computation and Communication Technology, Griffith University, Yuggera Country, Brisbane, Queensland 4111, Australia; 2National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA
Nonlocality in quantum systems is fundamental for secure remote quantum information tasks and tests of fundamental quantum physics. While loophole-free nonlocality verification has been achieved with polarization-entangled photon pairs, extending this to other degrees of freedom remains challenging. Here, we demonstrate detection loophole-free quantum steering utilizing optical vector vortex states, which are formed by combining orbital angular momentum (OAM) and polarization. This advancement goes beyond traditional polarization encoding, opening avenues for secure quantum communication devices and device-independent protocols in free-space and satellite-based scenarios.
ID: 464 / FS1-TOM8: 4
TOM 8 Non-Linear and Quantum optics
Encoding information in time-bin entangled photonic systems for scalable quantum state processing
1Institut national de la recherche scientifique, Canada; 2Leibniz Institute of Photonic Technology, Germany; 3Institute of Solid State Theory and Optics, Friedrich Schiller University Jena, Germany; 4Xlim Research Institute, France; 5Fraunhofer Institute for Applied Optics and Precision Engineering IOF, Germany; 6Friedrich-Schiller-University, Germany; 7QXP Technology Inc., China; 8City University of Hong Kong, Hong Kong; 9Tianfu Jiangxi Laboratory, China; 10Okinawa Institute of Science and Technology Graduate University, Japan; 11Swinburne University of Technology, Australia; 12Universita di Palermo, Italy
Encoding information in time-bin entangled photonic systems enables the implementation of quantum technologies that are compatible with both integrated and fiber frameworks. Extending such an encoding to high-dimensional (qudit) time-bin entanglement provides a tool towards scaling the information capacity, noise resilience, and scalability of information processing. Here, we demonstrate scalable time-bin entangled qudits in a programmable photonic chip, as well as in a fully fibered coupled loop system.