Free-electron interactions with photonic GKP states: Universal control and quantum error correction

Gefen Baranes, Shiran Even-Haim, Ron Ruimy, Alexey Gorlach, Raphael Dahan, Asaf A. Diringer, Shay Hacohen-Gourgy, Ido Kaminer

Research output: Contribution to journalArticlepeer-review

Abstract

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 nondestructive 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.

Original languageEnglish
Article number043271
JournalPHYSICAL REVIEW RESEARCH
Volume5
Issue number4
DOIs
StatePublished - Oct 2023

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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