Experimental realization of Counterfactual Quantum Cryptography
Giorgio Brida, Andrea Cavanna, Ivo Pietro Degiovanni, Marco Genovese,, Paolo Traina
TL;DR
This paper demonstrates the first experimental implementation of counterfactual quantum key distribution, showing secure information transfer without transmitting any particles carrying the data.
Contribution
It provides the first full experimental realization of counterfactual QKD, validating the theoretical scheme proposed in 2009.
Findings
Successful experimental demonstration of counterfactual QKD
Secure information transfer without particle transmission
Validation of theoretical counterfactual quantum communication scheme
Abstract
In counterfactual QKD information is transfered, in a secure way, between Alice and Bob even when no particle carrying the information is in fact transmitted between them. In this letter we fully implement the scheme for counterfactual QKD proposed in [T. Noh, \PRL \textbf{103}, 230501 (2009)], demonstrating for the first time that information can be transmitted between two parties without the transmission of a carrier.
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Taxonomy
TopicsQuantum Computing Algorithms and Architecture · Quantum Information and Cryptography · Quantum Mechanics and Applications