Quantum random number generation (QRNG) and quantum key distribution (QKD) are the first applications
of quantum physics at the level of individual quanta that have matured into commercial products. Both have
been commercially available for over 10 years and increasingly adopted in information security systems. Current
efforts focus on standardization and certification of QRNG and QKD devices and their components in order
to validate the technology and enable more widespread adoption. Since no official certification scheme specific
to quantum devices has been devised so far, alternative options must be investigated. This paper describes
our approaches and efforts to enable compliance of commercial QRNG and QKD network devices with security
standards such as AIS 20/311 and FIPS 140-2.2
We present and experimentally show a novel protocol for distributing secret information between two and only two parties in a N-party single-qubit Quantum Secret Sharing (QSS) system. We demonstrate this new algorithm with N = 3 active parties over ~6km of telecom. fiber. Our experimental device is based on the Clavis2 Quantum Key Distribution (QKD) system built by ID Quantique but is generalizable to any implementation. We show that any two out of the N parties can build secret keys based on partial information from each other and with collaboration from the remaining N − 2 parties. This algorithm allows for the creation of two-party secret keys were standard QSS does not and significantly reduces the number of resources needed to implement QKD on a highly connected network such as the electrical grid.
We present the results of a Swiss project dedicated to the development of high speed quantum key distribution and data encryption. The QKD engine features fully automated key exchange, hardware key distillation based on finite key security analysis, efficient authentication and wavelength division multiplexing of the quantum and the classical channel and one-time pas encryption. The encryption device allows authenticated symmetric key encryption (e.g AES) at rates of up to 100 Gb/s. A new quantum key can uploaded up to 1000 times second from the QKD engine.
We present gated silicon single photon detectors based on two commercially available avalanche photodiodes (APDs) and one customised APD from ID Quantique SA. This customised APD is used in a commercially available device called id110. A brief comparison of the two commercial APDs is presented. Then, the charge persistence effect of all of those detectors that occurs just after a strong illumination is shown and discussed.
In this paper, we present the architecture and results of the SwissQuantum quantum key distribution (QKD) network.
This three nodes triangular quantum network was running from March 2009 to January 2011 in the Geneva metropolitan
area. The three trusted nodes were located at the University of Geneva (Unige), the CERN and the University of Applied
Sciences Western Switzerland in Geneva (hepia Geneva). This quantum network was deployed to prove reliability of
QKD in telecommunication network over a long period. To facilitate integration of QKD in telecommunication network,
this quantum network was composed of three layers: a quantum layer, a key management layer, and an application layer.
The keys are distributed in the first layer; they are handled in the second layer; and they are used in the third layer.
We implement an OTDR with photon-counting modules at 1550nm based on sum frequency generation in a PPLN waveguide. The narrow temporal response of those detectors allows achieving a 2-points resolution of few centimetres.