Quantum optics and their applications (2)

[ALPS25-02] Twin-field-like-continuous-variable quantum key distribution with highly non-Gaussian state

*Makoto Ishihara¹, Wojciech Roga¹, Masahiro Takeoka¹ (1. Keio University)

We propose a continuous-variable quantum key distribution protocol of which a key rate overcomes the repeaterless bound. We calculate its key rate by numerical optimization with new constraints which can estimate our highly non-Gaussian state.