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Multiphoton Quantum Systems for Robust Quantum Technologies

ECE Colloquia Seminar

Wednesday, November 11, 2020

Location: Students will receive Zoom details via Canvas

Omar Magana-Loaiza
Louisiana State University

The challenges involved in the preparation and manipulation of photonic states with multiple particles, impose practical limitations to realistic quantum technologies. In this talk, I will report on our recent results that aim to demonstrate robust multiphoton quantum systems for novel quantum technologies. I will describe our recent work that demonstrates the possibility of manipulating the quantum electromagnetic fluctuations of two-mode squeezed vacuum states to engineer robust multiphoton states with tunable mean photon numbers and degrees of correlations. I will also describe the potential of robust multiphoton states to demonstrate quantum-enhanced phase estimation with neither pre- nor post-selected measurements. This protocol exploits the robustness of two-mode squeezed vacuum states against loss to outperform path-entanglement metrology schemes, in which the loss of a single photon is enough to remove all phase information from a quantum state. I will conclude my talk by discussing the implications of our experiments for quantum technologies that rely on multiphoton interference such as quantum imaging, boson sampling and quantum networks.  

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Omar S. Magaña-Loaiza received his B. S. from the Instituto Nacional de Astrofisica, Optica y Electronica in 2010. He received a Master and Ph.D. from the University of Rochester in 2012 and 2016, respectively. His doctoral dissertation was in the area of quantum coherence. He was a Research Associate in the Quantum Nanophotonics Group at the National Institute of Standards and Technology in Boulder from 2017 to 2018. He joined the faculty of Louisiana State University as an Assistant Professor of Physics in Fall of 2018. Now he leads the Experimental Quantum Photonics Group. His research group investigates novel properties of light and their potential for quantum technologies. He has published over 35 research articles in Nature and Science Journals, Applied Physics Reviews, Reports on Progress in Physics, Optica, and Physical Review Letters. His research is currently being supported by the U.S. Department of Energy, National Science Foundation and the Army Research Office. 

Department of Physics & Astronomy 

Quantum Photonics Laboratory 

LSU Profile: 

Group website:​​​​ 


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