LPC Physics Forum

Thursday Oct 16, 2025, 1:00 PM → 2:00 PM US/Central

Sunrise (WH11NE) (FNAL/Zoom)

https://cern.zoom.us/j/96898909340

1:00 PM → 1:30 PM Building Metropolitan-Scale Quantum Networks across Illinois with High-rate Time-bin Entangled Photons

The Advanced Quantum Network (AQNET) project brings together US universities and national labs with the aim of building long-distance fiber-connected quantum nodes throughout the Chicagoland area. Without readily available quantum repeaters, overcoming exponential loss in fiber presents a difficult challenge for distributing entangled photon pairs over distances on the order of 100km. Using time-bin photons, we are working to address this problem with high-rate entanglement sources and low-jitter photon detectors. In this talk, I’ll discuss the key steps we are taking in the AQNET collaboration to synchronize quantum nodes, distribute entanglement, and run quantum communication protocols in a real-world fiber network integrated with classical telecommunications.

Speaker: Andrew Cameron (Fermi National Accelerator Lab. (US))

1:30 PM → 2:00 PM Prospects for advancing quantum networks using integrated photonics

Currently, quantum network nodes typically consist of assemblages of commodity hardware. Putting together these setups is costly both in money and time, and requires periodic alignment and cleaning. The integration of network node functionality on photonic chips is therefore a highly sought-after capability. In this talk, I will discuss the components of the Fermilab time bin-encoded quantum network and corresponding advances in nanophotonics that can enable us to integrate multiple functions on a single chip. The realization of such devices will pave the way for scalable and easily deployed future quantum network nodes.

Speaker: Soumya Ghosh (Fermi National Accelerator Lab. (US))

20251016 ghosh LPC Physics Forum.pdf

20251016 ghosh LPC Physics Forum.pptx