Quantum Information Processing with Light: from Single Photons to Continuous Variables

Seminar
QUEST Center event
Yes
Speaker
Dr. Lior Cohen, University of Colorado (candidate faculty in Physics)
Date
11/01/2023 - 13:00 - 12:00Add to Calendar 2023-01-11 12:00:00 2023-01-11 13:00:00 Quantum Information Processing with Light: from Single Photons to Continuous Variables In this talk, I will present my journey moving from working with single photons to continuous variables. The signal-to-noise ratio (SNR) of range measurements can be improved by quantum detection and quantum light sources (quantum ranging). In the first part, I will present the theory of quantum ranging in the framework of Gaussian states. I will show that an optimal detection strategy, which minimizes the detection errors, can be applied for an arbitrary return state from the target. Then I will discuss the use of quantum light in the same scenario. Optimal detection is important in high-loss mediums, such as underwater, where low signal returns and maximizing its information is needed. In the second part, I will present experimental results of improved sensitivity of a temperature sensor and quantum simulations with single photons and will present my plans to extend the theory and experiments to Gaussian states. I will show simulations of a basic transition of quantum gravity theory and discuss scaling it up to complex transitions. Complex versions of these simulations have the potential to advance the research of basic science. Nanotechnology, 9th floor seminar room Department of Physics physics.dept@mail.biu.ac.il Asia/Jerusalem public
Place
Nanotechnology, 9th floor seminar room
Abstract

In this talk, I will present my journey moving from working with single photons to continuous variables. The signal-to-noise ratio (SNR) of range measurements can be improved by quantum detection and quantum light sources (quantum ranging). In the first part, I will present the theory of quantum ranging in the framework of Gaussian states. I will show that an optimal detection strategy, which minimizes the detection errors, can be applied for an arbitrary return state from the target. Then I will discuss the use of quantum light in the same scenario. Optimal detection is important in high-loss mediums, such as underwater, where low signal returns and maximizing its information is needed. In the second part, I will present experimental results of improved sensitivity of a temperature sensor and quantum simulations with single photons and will present my plans to extend the theory and experiments to Gaussian states. I will show simulations of a basic transition of quantum gravity theory and discuss scaling it up to complex transitions. Complex versions of these simulations have the potential to advance the research of basic science.

Last Updated Date : 03/01/2023