NEC Corporation (Akio Tajima)
To establish Secure Photonic Network based on the QKD technology, the basic performance enhancement and stability improvement of the QKD system are necessary. In addition, to enlarge application areas of Secure Photonic Network, an interfacing function for secure keys shared among multiple user terminals should be developed. To this end, we pursue the following four subthemes.
Fig. 1Four subthemes QKD technology for mission critical applications.
In May 2013 maintenance-free quantum key distribution for 30 days with QBER < 2.0% was achieved through a filed fiber (22 km distance, 13 dB loss) and we applied the system to NICT Tokyo QKD Network. Based on above established technologies, we develop compact demo systems. This system can be offered trial use to a customer to get some feedbacks other than applied to Tokyo QKD Network as a redundant link.
Interim results for Team 157A-T03
Task title | Outcome | Date | Note |
---|---|---|---|
1: Stabilization technique | Maintenance-free quantum key distribution for 30 days with QBER < 2.0% was achieved through a filed fiber (22 km, 13 dB). | May 2013 | IEICE Society Conf. 2013 |
2: Enhancing application platform | An application platform architecture was proposed. Based on above architecture, Key supply agent was developed in team 157D-T01. |
Mar. 2013 | |
3: Next generation quantum key distribution system technology | Photon detector packages of 3-slot size (ATCA) were developed. Using these detector packages field experiments were carried out and good performances (secure key rate >62.5 kbps and QBER < 3.0%) were confirmed. | May 2013 | Smaller size (2-slot) detector package is under development. |
4: Long-term operational testing | 5-times (1 day, 5 days, 1 week, 2 weeks and 1 month) field experiments were carried out. | May 2013 | OECC2012 |
Performance monitoring system on the web was developed. | Sep. 2013 | CLEO-PR2013 |
Fig. 2Interim results for Team 157A-T03
Targets for Team 157A-T03
Task title | Work/Milestone | Due Date | Note |
---|---|---|---|
1: Stabilization Technique | Establish stabilization technique of WDM QKD system. The performance targets are 125 kbps secure key rate, QBER < 3.0 % at 13 dB loss (2λ). | Mar. 2014 | |
2: Enhancing Application Platform | Outcome was transferred to team 157D-T01. Redefine this task as activities in team 157D-T01. |
N/D | |
3: Next Generation Quantum Key Distribution System Technology | Complete smaller size photon detector packages (ATCA 2-slot size). Develop compact demo system (1λ) using the smaller photon detector packages. |
Mar. 2014 | |
4: Long-term Operational Testing | Repeat long-term key generation experiment with additional compact demo system. | Mar. 2015 |
Chart 1Schedule for Team 157A-T03