Dispersion supported BB84 quantum key distribution using phase modulated light
Jose Mora, Jose Capmany
TL;DR
This paper demonstrates that BB84 quantum key distribution can be effectively implemented using a phase modulated light system with dispersion support, challenging previous assumptions and leveraging fiber chromatic dispersion.
Contribution
It introduces and experimentally validates a novel dispersion-supported BB84 protocol using phase modulation and fiber chromatic dispersion.
Findings
BB84 is feasible with PM-PM configuration due to fiber dispersion
Experimental validation confirms the practicality of dispersion-supported BB84
The method offers a new approach to quantum key distribution systems
Abstract
We propose and experimentally demonstrate that, contrary to what it was thought up to now, BB84 operation is feasible using the double phase modulator (PM-PM) configuration in frequency coded systems. This is achieved by exploiting the phase to intensity conversion due to the chromatic dispersion provided by the fiber linking Alice and Bob. Thus, we refer to this system as dispersion supported or DS BB84 PM-PM configuration.
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Taxonomy
TopicsAdvanced Photonic Communication Systems · Optical Network Technologies · Photonic and Optical Devices