SciELO - Scientific Electronic Library Online

vol.8 número1Ergodic-nonergodic transition in tapped granular systems: The role of persistent contactsIncreasing granular flow rate with obstructions índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados




  • No hay articulos citadosCitado por SciELO

Links relacionados

  • No hay articulos similaresSimilares en SciELO


Papers in physics

versión On-line ISSN 1852-4249


LOPEZ GRANDE, Ignacio H; SCHMIEGELOW, Christian T  y  LAROTONDA, Miguel A. Autonomous open-source hardware apparatus for quantum key distribution. Pap. Phys. [online]. 2016, vol.8, n.1. ISSN 1852-4249.

We describe an autonomous, fully functional implementation of the BB84 quantum key distribution protocol using open source hardware microcontrollers for the synchronization, communication, key sifting and real-time key generation diagnostics. The quantum bits are prepared in the polarization of weak optical pulses generated with light emitting diodes, and detected using a sole single-photon counter and a temporally multiplexed scheme. The system generates a shared cryptographic key at a rate of 365 bps, with a raw quantum bit error rate of 2.7%. A detailed description of the peripheral electronics for control, driving and communication between stages is released as supplementary material. The device can be built using simple and reliable hardware and it is presented as an alternative for a practical realization of sophisticated, yet accessible quantum key distribution systems.

Palabras clave : Quantum Optics; Quantum Key Distribution; Open Source Hardware.

        · texto en Inglés     · Inglés ( pdf )


Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons