Abstract
We introduce a quantum key distribution scheme based on four-photon coincidence measurements. This scheme offers a much higher degree of security than current quantum key distribution methods and minimizes problems due to photon losses and dark counts.
Highlights
We introduce a quantum key distribution scheme based on four–photon coincidence measurements
Interferometric schemes can be robust over long distances [3]. One such scheme [4] employs parametric down–conversion (PDC) of a laser beam, with frequency ωp, in a nonlinear crystal to produce pairs of photons that are correlated in energy and momentum
With earlier systems using pairs of correlated photons, errors can arise from missed counts or spurious dark counts
Summary
Abstract: We introduce a quantum key distribution scheme based on four–photon coincidence measurements. This scheme offers a much higher degree of security than current quantum key distribution methods and minimizes problems due to photon losses and dark counts. “Quantum cryptography using entangled photons in energy–time Bell states,” Phys.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
