Events
Wisconsin Quantum Institute |
Events on Wednesday, November 11th, 2026
- Wisconsin Quantum Institute Colloquium
- Quantum Networking Using Waveguide Quantum Electrodynamics
- Time: 3:30 pm - 5:00 pm
- Place: Discovery Building, DeLuca Forum
- Speaker: Aziza Almanakly, New York University
- Abstract:
Entanglement distribution across a network of non-local processing modules can enable robust and extensible quantum computation. Here, we engineer two complementary styles of quantum interconnects between superconducting modules underpinned by the physics of waveguide Quantum Electrodynamics (wQED). In the first approach, we realize a multi-qubit module that exploits quantum interference to emit microwave photons into a waveguide with a specified propagation direction [1]. Next, we construct the quantum interconnect by coupling two modules to a common waveguide and demonstrate directional (chiral) photon emission and absorption [2]. Using this chiral quantum interconnect, we generate remote entanglement between modules an arbitrary distance apart. In the second approach, we engineer a superconducting system of two giant artificial atoms coupled sequentially to a waveguide, with tunable individual and correlated dissipation enabled by interference between coupling points [3]. Continuously driving the atoms through the waveguide exploits correlated dissipation to generate remote entanglement. Together, these results illustrate two distinct roles for interference in quantum networking: routing the flow of quantum information and exploiting dissipation as a resource. They establish waveguide QED as a basis for building modular superconducting quantum networks with all-to-all connectivity.
[1] B. Kannan*, A. Almanakly*, et al., “On-demand directional microwave photon emission using waveguide quantum electrodynamics,” Nature Physics 19, 394–400 (2023). [2] A. Almanakly, B. Yankelevich, et al., “Deterministic remote entanglement using a chiral quantum interconnect,” Nature Physics 21, 825–830 (2025). [3] A. Almanakly, A. Soro, A. Vivas-Viana, et al., “Driven-dissipative entanglement of distant giant atoms,” arXiv:2606.13375 (2026). This event starts at 3:30pm with refreshments, followed at 3:45pm by a short presentation by Sujan Subedi (postdoc, Xiao group) titled "Electrically switchable ferron upconversion in a van der Waals displacive ferroelectric". The invited presentation starts at 4pm. - Host: Ona Ambrozaite