Quantum Cryptography Using Momentum and Position Variables in a Simple Optical Arrangement

2025/05/07 by Arias, Alejandro, Baptiste Sevilla, Sevilla, Baptiste
Computer Science · Physics and Astronomy · #FOS: Physical sciences #Orbital Angular Momentum in Optics #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Physics (quant-ph)

paper · pdf · doi:10.48550/arxiv.2505.04261

openalex publication_date 2025/05/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In this work, we explore an experimental implementation of quantum key distribution (QKD) using position and momentum quantum states. By employing a setup that includes a laser, a slit, and lenses to generate a Fourier transform, we demonstrate a variation of the BB84 protocol. Our technique shows how a system with these characteristics can be implemented within a quantum framework.

Citations

• Quantum cryptography: Public key distribution and coin tossing
• Gaussian Quantum Information

Related

• Quantum cryptography beyond key distribution: theory and experiment
• Emulation of the Six-State Quantum Key Distribution Protocol with Pulsed Lasers
• Quantum Key Distribution with Fibonacci Orbital Angular Momentum States
• Quantum Cryptography: an overview of Quantum Key Distribution
• Quantum key distribution without reference frame alignment: Exploiting photon orbital angular momentum