Quantum Optics Seminar: Tzula Propp, TuDelft, QuTech

Beyond Quantum Dial-Up: In Search of Limits to Multiplexing on a Quantum Internet

The quantum internet will, eventually, provide access to quantum computational and communicational advantage for everyday users via photonic clients: cheap, memoryless devices that interface with quantum servers. However, quantum applications running on near-term quantum networks face a bottleneck from low rates of quantum communication between nodes. This not only slows down application execution, but also degrades performance due to decoherence of qubits stored in memory. Multiplexing is one way to circumvent this bottleneck. In this talk, we’ll derive practical limits to the impact of multiplexing, and then identify experimentally feasible paths towards surpassing them using next-generation quantum multiplexing and multi-server multiplexing techniques.