Scientists have built a new quantum chip that will enable the creation of completely secure mobile phones and ultra-fast computers with capabilities far beyond today?s devices.
The international research team behind the breakthrough, who are based at the University of Bristol, will detail the development at the British Science Festival in Aberdeen this week.
In the short term, the team are applying the technology to safe communications for mobile phones and computers, which would make online banking and internet shopping more secure. Phones could be protected against hacking attempts.
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The new chip is made from silicon, like the microprocessors in all computers and smart phones. Unlike conventional silicon chips that work by controlling electrical current, the quantum chips manipulate particles of light, called photons, to perform calculations. A quantum computing device with 100 photons could in principle solve trillions of equations at the same time.
Because the technology uses the same silicon manufacturing techniques as conventional chips, a manufacturer can easily produce millions of quantum chips.
The new circuits are compatible with existing optical glass fibre infrastructure used in broadband communications, because they operate at the same wavelengths. ?The global communications network, including the internet, is powered by fibre optics which use light to move information at high speed between countries, cities and buildings,? said Mark Thompson, deputy director of Bristol?s Centre for Quantum Photonics. ?Our devices are directly compatible ? in a sense they talk the same language.?