Title: Building a quantum repeater network using atomic quantum interconnects.
Dr. Eden Figueroa
Stony Brook University and Brookhaven National Laboratory
Location: 1080 Physics Research Building, Smith Seminar Room
Faculty Hosts: Ezekiel Johnston-Halperin and Ron Reano
Abstract: The goal of quantum communication is to transmit quantum states between distant sites. The key aspect to achieve this goal is the generation of entangled states over long distances. Such states can then be used to faithfully transfer classical and quantum states via quantum teleportation. The big challenge, however, is that the entanglement rates generated between two distant sites decreases exponentially with the length of the connecting channel. To overcome this difficulty, the new concepts of entanglement swapping, and quantum repeater operation are needed.
In this talk we will show our progress towards building a quantum network of many quantum devices capable of distributing entanglement over long distances connecting Stony Brook University and the Brookhaven National Laboratory on Long Island, New York. We will show how to produce photonic quantum entanglement in the laboratory and how to store it and distribute it by optically manipulating the properties of atomic clouds. Finally, we will discuss our recent experiments in which several quantum devices are already interconnected forming an elementary version of a memory-assisted quantum communication network.
Bio: Prof. Eden Figueroa was awarded his BSc in Engineering Physics and his MSc in Optical Engineering at Monterrey Tech, Mexico in 2000 and 2002 respectively. From 2003 to 2008, he was a PhD student in the Quantum Technology Group of Prof. A. I. Lvovsky at the University of Konstanz in Germany and later at the Institute for Quantum Information Science at the University of Calgary, Canada. His PhD thesis entitled: “A quantum memory for squeezed light” was one of the first experimental implementations of quantum memory for quantized light fields. In 2009, he joined the Quantum Dynamics Group of Prof. G. Rempe at the Max-Planck-Institut für Quantenoptik in Garching, Germany where he worked in implementation of quantum networks utilizing single-atoms trapped in high-finesse optical cavities. Starting in 2013 he has been an Associate Professor and the Group leader of the Quantum Information Technology group at Stony Brook University, where he has developed scalable room temperature quantum memories and entanglement sources, aiming to constructing the first working prototype of a quantum repeater network. Since Jan. 2019, Prof. Figueroa is also joint appointment with the Instrumentation Division and the Computer Science Initiative at Brookhaven National Laboratories. The collaboration between Stony Brook and BNL is developing the Long Island Quantum Information Distribution Network (LIQuIDNet), a first prototype of a quantum network distributing photonic entanglement over long distances.
The colloquium can also be seen on Zoom:
https://osu.zoom.us/j/92596080214?pwd=RlFkeXJ1NGtKRVNteXY2TDlFMHRDUT09
Meeting ID: 925 9608 0214
Password: 439422
