Phys.org November 1, 2018 To unleash the potential of quantum technology, scientists need to find a way to protect the entangled superposition of qubits at the nanoscale. An international team of researchers (Australia, Israel) developed a novel lattice structure of silicon nanowires, creating a particular symmetry that provides unusual robustness to the photons’ correlation. Robustness stems from the underlying topology. Waveguides made using silicon nanowires were lined up in pairs with a deliberate defect in symmetry through the middle, creating two lattice structures with different topologies and an intervening ‘edge’. This topology allows for the creation of special modes in […]
Tag Archives: Quantum technology
One step closer to complex quantum teleportation
Science Daily November 2, 2018 Researchers in Austria are pursuing a new path to increase the information capacity of complex quantum systems – instead of just increasing the number of particles involved, the complexity of each system is increased. By using a computer algorithm Melvin that autonomously searches for an experimental implementation, they entangled three photons beyond the conventional two-dimensional nature using quantum systems which have more than two possible states — in this particular case, the angular momentum of individual light particles. The individual photons now have a higher information capacity than QuBits. The developed methods and technologies could […]
Quantum technologies can be applied on a standard telecommunications network
Phys.org October 4, 2018 Researchers in Spain have developed a quantum cryptography network integrated in a commercial optical network through technologies based on software defined networking allowing for the implementation of quantum and classical network services in a flexible, dynamic and scalable manner. The technology has been developed on an existing infrastructure using standard communications systems and allows switching between links connecting points that may be up to 60 kilometers apart. Twenty channels can share the same fiber in the same optical band that uses the quantum channel, allowing the simultaneous transmission of quantum signals with more than two terabytes […]