2023/03/23 by Gefen Baranes, Shiran Even-Haim, Baranes, Gefen +13 · 2 citations
Physics and Astronomy · Computer Science · #Quantum and electron transport phenomena #Quantum optics and atomic interactions #Quantum Information and Cryptography
paper · pdf · doi:10.48550/arxiv.2303.13244
We show that the coherent interaction between free electrons and photons can be used for universal control of continuous-variable photonic quantum states in the form of Gottesman-Kitaev-Preskill (GKP) qubits. Specifically, we find that electron energy combs enable non-destructive measurements of the photonic state and can induce arbitrary gates. Moreover, a single electron interacting with multiple photonic modes can create highly entangled states such as Greenberger-Horne-Zeilinger states and cluster states of GKPs.