Report on proof-of-principle implementations of novel QKD schemes performed at INRIM

A. Avella; G. Brida; D. Carpentras; A. Cavanna; I. P. Degiovanni; M. Genovese; M. Gramegna; P. Traina

doi:10.1117/12.974608

19 November 2012 Report on proof-of-principle implementations of novel QKD schemes performed at INRIM

A. Avella, G. Brida, D. Carpentras, A. Cavanna, I. P. Degiovanni, M. Genovese, M. Gramegna, P. Traina

Proceedings Volume 8542, Electro-Optical Remote Sensing, Photonic Technologies, and Applications VI; 85421N (2012) https://doi.org/10.1117/12.974608
Event: SPIE Security + Defence, 2012, Edinburgh, United Kingdom

Abstract

Quantum Key Distribution together with its intrinsic security represent the more promising technology to meet the challenging requests of novel generation communication protocols. Beyond its relevant commercial interests, QKD is currently and deeply investigated in research fields as quantum information and quantum mechanics foundations, in order to push over the limits of the actual resources needed to ensure the security of quantum communication. Aim of the paper is to contribute to this open debate presenting our last experimental implementations concerning two novel quantum cryptographic schemes which do not require some of the most widely accepted conditions for realizing QKD. The first is Goldenberg-Vaidman^1,2 protocol, in which even if only orthogonal states (that in principle can be cloned without altering the quantum state) are used, any eavesdropping attempt is detectable. The second is N09³ protocol which, being based on the quantum counterfactual effect, does not even require any actual photon transmission in the quantum channel between the parties for the communication. The good agreement between theoretical predictions and experimental results represent a proof of principle of the experimental feasibility of the novel protocols.

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A. Avella, G. Brida, D. Carpentras, A. Cavanna, I. P. Degiovanni, M. Genovese, M. Gramegna, and P. Traina "Report on proof-of-principle implementations of novel QKD schemes performed at INRIM", Proc. SPIE 8542, Electro-Optical Remote Sensing, Photonic Technologies, and Applications VI, 85421N (19 November 2012); https://doi.org/10.1117/12.974608

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KEYWORDS

Sensors

Quantum key distribution

Single photon

Polarization

Interferometers

Information security

Photon polarization

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