Science Daily March 8, 2019 It becomes increasingly difficult to detect long-wavelength single photons because of thermal fluctuations in the background. Researchers in the Netherlands used a superconducting qubit to directly observe the quantization of radio-frequency electromagnetic fields stored in a photonic microresonator. They were then able to manipulate the quantum state of the radio-frequency field, forming one- and two-photon Fock states within the microresonator, and analyze how the system interacts dynamically with its environment. Extending circuit quantum electrodynamics approach could be used for fundamental studies in quantum thermodynamics and find practical application in imaging…read more. TECHNICAL ARTICLE
Tag Archives: Quantum technology
IBM Quantum Computer Roadmap
Next Big Future March 5, 2019 IBM has published a roadmap for improving quantum computers based on a “quantum volume” which is an architecture-neutral metric. It measures the useful amount of quantum computing done by a device in space and time. The results on the IBM Q System One indicate its performance is just over the threshold for 16. IBM roadmap is to double quantum volume every year. IBM wants to improve error rates 100 times from 1% to 0.01%. They plan to do this by increasing coherence times from 0.5 milliseconds to 1-5 milliseconds. The hope is to achieve quantum […]
Physicists name and codify new field in nanotechnology: ‘electron quantum metamaterials’
Nanowerk November 5, 2018 According to an international team of researchers (Singapore, USA – UC Riverside) synthesizing new materials by twisting and stacking atomically thin layers, is still in the “alchemy” stage. To bring it all under one roof, they have proposed this field of research be called “electron quantum metamaterials”. They highlight the potential of engineering synthetic periodic arrays with feature sizes below the wavelength of an electron and delve deeper and lay out the fundamental physics that may explain much of the research in electron quantum metamaterials…read more. TECHNICAL ARTICLE
Quantum on the edge: Light shines on new pathway for quantum technology (w/video)
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 […]
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 […]