Special LMI Seminar: Advanced Entanglement for Quantum Information Encoding in Photonic States Liat Nemirovsky Levy

Abstract:

Entanglement is a central resource in quantum information science. Advanced forms - such as high-dimensional, multipartite, and hyperentanglement - offer new capabilities by expanding the Hilbert space and enabling more complex correlations. Multipartite entanglement involves correlations among more than two subsystems; high-dimensional entanglement extends beyond qubits to qudits; and hyperentanglement refers to entanglement across multiple degrees of freedom simultaneously.

In this talk, I will present new approaches for the generation and control of such entangled photonic states, and explore their use as resources for encoding and manipulating quantum information. I will describe our experimental and theoretical work on generating a new type of highly entangled photonic states via spatial and polarization modes, and show how combining multiple degrees of freedom can enhance the channel capacity in quantum systems.

Finally, I will introduce a topological scheme we developed to protect entanglement in integrated photonic platforms, offering a new route toward scalable, resilient quantum photonic technologies.