Protocol for Generating Optical Gottesman-Kitaev-Preskill States with Cavity QED

Jacob Hastrup*, Ulrik L. Andersen

*Corresponding author for this work

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Gottesman-Kitaev-Preskill (GKP) states are a central resource for fault-tolerant optical continuous-variable quantum computing. However, their realization in the optical domain remains to be demonstrated. Here we propose a method for preparing GKP states using a cavity QED system that can be realized in several platforms, such as trapped atoms, quantum dots, or diamond color centers. We then further combine the protocol with the previously proposed breeding protocol by Vasconcelos et al. to relax the demands on the quality of the QED system, finding that GKP states with more than 10 dB squeezing could be achieved in near-future experiments.

Original languageEnglish
Article number170503
JournalPhysical Review Letters
Issue number17
Number of pages6
Publication statusPublished - 2022


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