WACQT Fellows | Mini-Symposium

Zoom Password: 8h811s

Programme:

12:30 - Mizanur Rahaman 
Operator Algebraic Formalism in Quantum Communication and Cryptography

In the past decade several remarkable interactions between operator algebras and quantum information theory have been discovered, largely centered around the study of quantum entanglement – a central notion in quantum information and a key resource to develop quantum technologies. Aside from their theoretical importance (general quantum mechanics is rooted in such settings), operator algebras naturally model hybrid classical-quantum systems and numerous modern-day architectures for quantum computing that encode quantum information in infinite-dimensional quantum systems.

In this talk I will present my research programme focusing on how operator algebraic insights provide efficient ways in addressing some challenging problems faced in the areas such as quantum communication, and cryptography. I will also discuss some future avenues where this connection will unlock new possibilities towards understanding quantum behaviours in systems beyond finite dimensions.

13:00 - Adam Kinos
Advancing Quantum Technologies and Medical Imaging with Rare-Earth Crystals

In this talk, I will present my research program as an Assistant Professor in Physics, focusing on advancing quantum technologies through the use of rare-earth crystals. These crystals exhibit unique properties, such as long coherence times and strong dipole-dipole interactions, making them promising candidates for quantum computing and quantum communication. I will highlight my efforts to develop a small-scale quantum processor and discuss our approach to scaling it for quantum repeater networks. Additionally, I will explore the application of these crystals in quantum biophotonics, particularly in Ultrasound Optical Tomography (UOT), a noninvasive medical technique that combines optical contrast and ultrasound resolution for deep tissue imaging. UOT has the potential for measuring tissue oxygenation and detecting tumors, advancing the field of medical diagnostics.

13:30 - David Busto
Ultrafast Quantum Photoelectronics

The interaction between extreme ultraviolet (XUV) light and matter results in ionization, leading to the emission of one or more photoelectrons. When photoionization is triggered by ultrashort XUV pulses, the photoelectrons can either form a coherent superposition of continuum states—described by a wave function—or a statistical mixture of states, requiring the description via a density matrix. In this talk, I will present my research  program as an Assistant Professor at Lund University, focusing on developing photoelectron quantum state tomography for spectroscopic applications in atomic and molecular physics. Additionally, I will explore the potential and challenges of using photoionization as a new platform for fundamental tests of quantum mechanics, using coherent single photoelectron wave packets or entangled photoelectron pairs.