Generation of mutually unbiased bases for 4D-QKD with structured photons via LNOI photonic wire. (17th August 2018)

• Record Type: Journal Article
• Authors: Mousavi, S Faezeh; Vallone, Giuseppe; Villoresi, Paolo; Nouroozi, Rahman
• Is Part Of: Journal of optics. Volume 20:Number 9(2018:Sep.)
• Publication Date: 2018-08-17
• Subjects: quantum communications -- quantum cryptography -- integrated optics -- modulators -- electro-optical devices -- optics; Optics -- Periodicals; 535.05
• DOI: 10.1088/2040-8986/aad793
• Languages: English
• ISSNs: 2040-8978

Abstract

Abstract: A combination of orbital angular momentum (OAM) and spin angular momentum (SAM) degrees of freedom for a single photon leads to enhanced transmission rates and security in high-dimensional quantum key distribution (QKD) systems. Therefore, the actual commercial QKD sources require accurate and fast generation of encoded states. This paper proposes a schemed and numerically verified integrated high-speed and low-loss electro-optical modulator for the manipulation of modes encoded in OAM-SAM states. The modulator is designed as an electro-optically active lithium niobate on insulator photonic wire configuration. The obtained results indicate the high purity (>92%) and low quantum bit error rate (∼8%) generation of encoded states for 4D-QKD with structured photons via low applied voltage values not more than 9 volts.