Category: Innovative Technologies
A so-called quantum link (Q-link) will be established between the Dutch cities of Delft and The Hague, which will link and entangle two quantum systems. This first quantum network in the Netherlands will be released around the turn of the year, after which it is planned for further scaling up to other cities in the Dutch Randstad region. Dutch scientists and companies are joining efforts in the development of quantum technology in the form of quantum networks and computers. But what use will this new technology be to us? And how will it change our lives?
The Netherlands aims to become the ‘Silicon Valley of quantum technology’, as indicated in the Dutch Government’s National Agenda for Quantum Technology document. Along with several other parties, QuTech – a long-term collaboration between Delft University of Technology and TNO (the Netherlands Organisation for Applied Scientific Research), is conducting research into the potential of Quantum Computing and Quantum Internet. It is also looking into practical applications that involve the participation of companies such as the Dutch telecom giant KPN and the American multinational Cisco Systems.
Enormous economic impact
The range of applications seems to be limitless. “The quantum computer makes calculations in a completely different way than the computers we are currently familiar with,” says Ingrid Romijn, program manager at QuTech.
In addition, quantum technology can contribute to advances in batteries and solar cells. It can also clarify and solve logistical problems much more swiftly,” Romijn explains. The quantum computer can, therefore, have a major impact on the healthcare, energy and logistics sectors, to name but a few. “But that’s not all. Every sector can benefit from a computer with more computational power. Consequently, the economic impact is bound to be enormous.”
It is not yet clear exactly how significant this impact will be. Not all the capabilities of a quantum computer have been figured out by researchers and companies as yet. René Pluis, the cybersecurity leader of the digital acceleration program for the Netherlands at Cisco Systems: “This is more often the case once fundamental research is put into actual practice.” He compares it to the technological revolution of the 1950s. “That’s when electronic appliances and transistors became the norm. ”
Superposition and entanglement
Quantum technology works on the basis of two principles: entanglement and superposition. These two characteristics make the technology stand out from all others.
Quantum technology does not look at bits, but instead, it deals with qubits. The currently used bits are always a 0 or a 1. A qubit can also be a 0 and a 1 at the same time: this is what we call superposition. The way qubits work is based on principles of quantum mechanics, one of the most precise theories in the world. Thanks to major breakthroughs over the past decade, it is now clear that these principles can be applied in new cutting-edge technologies. “By having the quantum computer perform computations using qubits, in principle, several computations can be performed at the same time. Since quantum computers can perform multiple operations all at once, they have the potential to solve problems that are practically unsolvable for conventional computers,” Pluis asserts.
Entanglement means that two quantum systems, for example, electrons or photons, are connected with each other without actually ever being physically connected. If one quantum system changes, the other one will also sense that, even if they are thousands of kilometres away from each other. “This also sounds almost magical, but it has been proven to work,” Pluis goes on to say: “As a consequence of this entanglement, there is a link between the states of the two systems from a distance. It is as if they are one system, so to speak. This allows remotely entangled quantum systems to synchronize much faster,” she says. This could result in more accurate positionings and localizations and could be incorporated into astronomy. Pluis: “The more accurately atomic clocks are tuned up with each other, the finer satellites and telescopes can be tuned.”
According to Romijn, one of the first applications of quantum computers and networks will be to secure confidential information, e.g. that of the government or the military. “For instance, we are working with a Dutch bank to examine the scope for security,” she says.
Not only does the quantum computer offer new forms of security, but it also poses security risks. The current security provided by encryption, a cipher sequence generated by multiplying large prime numbers, is no longer as secure when a quantum computer comes into play. “It is very difficult for a standard computer to reduce this type of cipher sequence down to those two prime numbers. This is why data is secure. But because a quantum computer performs these kinds of calculations far more quickly, it can easily crack these kinds of codes,” explains Pluis, who works at Cisco.
“The quantum computer’ is still a few years down the road. But if someone were to save files now in order to decrypt them sometime in the future, that might pose a problem. Not all documents will still be relevant in a number of years, but government documents often still will be,”, he notes. That is why a new type of security is needed for important – classified – documents. “An encryption system is currently being developed on the basis of quantum network technology that no longer relies on the huge computational power of quantum computers,” Pluis states.
Good or evil
Data security is one of the many applications of quantum technology. As such, the new technology has two faces. On the one hand, it can crack today’s security systems, with all the ensuing implications. On the other hand, it can provide new and more sophisticated forms of security. Romijn: “What if the technology falls into the hands of criminals? The government, among others, is quite concerned about that.” According to the program manager at QuTech, this is a recurring question that always arises where technological developments are concerned. “When the laser was invented, people were also afraid that criminals would make weapons out of it. Now it appears that good things are done with it in the main,” she comments.
“The technology is not good or evil. We have to make sure that it is put to good use.” There is a lot of emphasis on the ethical side of things within the National Agenda Quantum Technology document.
Collaboration as a guiding principle
Despite the competition on being first to realize a fully functional quantum computer, in Romijn’s view it is also imperative that countries and companies work together. “For example, researchers all have their own expertise, but so do companies and even countries. We can subsequently arrive at the most optimal result by working together,” she states. This is why a few months ago, TNO, TU Delft, QuTech, and the municipality of Delft jointly set up the Quantum Delft ecosystem. “
Jacqueline Schardijn, Senior Business Developer High Tech at InnovationQuarter adds: “There is already a vibrant ecosystem around Quantum Delft, where startups are working with scientists on quantum issues and associated technologies. The Cronos Group, QuTech, and InnovationQuarter are working on raising awareness about the business side. We are delighted to welcome the business community to the wonderful world of quantum technology.”