3 papers
quant-ph2026
Continuous-variable approximate unitary 2-design, with applications to unclonable encryption
Arpan Akash Ray, Boris Skoric
We introduce an -approximate unitary 2-design that is compatible with the structure of p- and q-quadratures in continuous-variable (CV) quantum systems. The design uni…
quant-ph2025
Random coding for long-range continuous-variable QKD
Arpan Akash Ray, Boris Skoric
Quantum Key Distribution (QKD) schemes are key exchange protocols based on the physical properties of quantum channels. They avoid the computational-hardness assumptions that under…
quant-ph2025
Practical Unclonable Encryption with Continuous Variables
Arpan Akash Ray, Boris Škorić
We propose the first continuous-variable (CV) unclonable encryption scheme, extending the paradigm of quantum encryption of classical messages (QECM) to CV systems. In our construc…