The group researching this quantum cryptography network are members of the Quantum Computing and Information Research Group based at the School of Computing, led by Vicente Martín and of the Department of Network and Services Security at Telefónica I + D.
The prototype is being developed as part of the CENIT-SEGUR@ - Security and Confidence in the Information Society research and development project. The project partners form a consortium of twelve companies and fifteen public research institutions, including the UPM’s School of Computing, led by Telefónica I + D. The project has a budget of 31 million euros.
The aim of this project is to light the way towards a new generation of integral security solutions, capable of dealing with the telecommunications security risks now threatening conventional networks.
The security of conventional public key cryptography methods is founded on the confidence that an attacker does not have computing power or mathematical knowledge enough to decrypt the. But these methods are becoming less secure as computing power increases and mathematical methods grow in sophistication.
Quantum key distribution depends on quantum mechanics and provides completely different ways of generating cryptographic keys, that are the building blocks of many security schemes, reaching unprecedented security levels.
Using a complex protocol, a sender and a receiver exchange a series of qubits encoded in photons. This way, they can agree on a highly secure and virtually unbreakable key, because, according to the principles of quantum physics, any attempt at intercepting a qubit would be detected by the receiver, making for confidential information exchange.
A qubit (from quantum bit) is the minimum and therefore basic unit of quantum information. Quantum key distribution technology uses individual photons or qubits over optical fibre, free space or even satellite links.
On any network
The metropolitan quantum key distribution network developed by the CENIT SEGUR@'s team of researchers, composed of physicists, computer scientists, telecommunications engineers and mathematicians, can coexist with traditional communication networks. In actual fact, this is its main advantage. The network already has all its key components and has successfully passed its first experimental tests.
At present there are only three networks like this in the world, and the metropolitan quantum network developed at the UPM’s School of Computing is the only network offering direct links to end users by including technology also for the access segment. Also it will be made compliant with the standards on networked quantum devices, that are being developed at the European Telecommunication Standards Institute andin the definition of which the UPM’s School of Computing team is also participating.
This social application of the quantum key distribution network has been achieved by developing a number of protocols enabling its deployment on conventional telecommunications networks, without the use of these networks affecting qubit circulation.
Although this technology was first proposed in the 1980s, there is now a second generation of quantum key distribution devices, with several prototypes on the market.
The main aim of the metropolitan quantum key distribution network developed at the UPM’s School of Computing is to overcome the current limitation of point-to-point links and non-shared fibersand make it available to small and medium-sized enterprises and even multiple end users through the shared use of the communications infrastructure.
The prototype intends to structure a quantum key distribution network using a metropolitan ring and serving a number of end users through an access network, that will use quantum links on the conventional network infrastructure.
Although the current telecommunications network is generally based mainly on copper, Telefónica is now deploying a new passive optical fibre network that will allow qubit transmissions. The qubits will coexist with but not interfere with the conventional telecommunications photons.
The fundaments of this research were presented at the quantum networks conference held at Vienna a month ago as part of the European SECOQC project. The presentation focused on the feasibility of quantum key distribution data transmission over a commercial telecommunications network.
Further reports about: > CENIT-SEGUR@ > Computing > Quantum > UPM’s > communications network > cryptographic keys > distribution network > integral security solutions > metropolitan quantum > metropolitan quantum cryptography network > optical fibre > telecommunications network > telecommunications security
New NASA study improves search for habitable worlds
20.10.2017 | NASA/Goddard Space Flight Center
Physics boosts artificial intelligence methods
19.10.2017 | California Institute of Technology
University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...
Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...
Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...
17.10.2017 | Event News
10.10.2017 | Event News
10.10.2017 | Event News
20.10.2017 | Information Technology
20.10.2017 | Materials Sciences
20.10.2017 | Interdisciplinary Research