Deterministic generation of highly squeezed GKP states in ultracold atoms

Harry C. P. Kendell, Giacomo Ferranti, Carrie A. Weidner*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

Abstract

We demonstrate a method for encoding Gottesman–Kitaev–Preskill (GKP) error-correcting qubits with single ultracold atoms trapped in individual sites of a deep optical lattice. Using quantum optimal control protocols, we demonstrate the generation of GKP qubit states with 10 dB squeezing, which is the current minimum allowable squeezing level for use in surface code error correction. States are encoded in the vibrational levels of the individual lattice sites and generated via phase modulation of the lattice potential. Finally, we provide a feasible experimental protocol for the realization of these states. Our protocol opens up possibilities for generating large arrays of atomic GKP states for continuous-variable quantum information.
Original languageEnglish
Article number026109
Number of pages8
JournalAPL Quantum
Volume1
Issue number2
Early online date8 May 2024
DOIs
Publication statusPublished - 1 Jun 2024

Research Groups and Themes

  • QETLabs

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