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quantum computing News
Diamond Defects Enhance Single-Photon Emission
WEST LAFAYETTE, Ind., Jan. 14, 2015 — Nanodiamonds containing atomic-scale defects can enhance metamaterials’ emission of single photons — an important attribute of future quantum computers. A team at Purdue University, in cooperation with Russian researchers, coupled nanodiamonds with nitrogen vacancy centers with a metamaterial lattice made of titanium nitride (TiN) and aluminum scandium nitride (AlxSc1-xN). The metamaterial is pumped by a laser. “These results indicate that the brightness of the
Technique Enables Better Quantum Detectors
CAMBRIDGE, Mass., Jan. 14, 2015 — An array of single-photon detectors on a silicon chip could help progress the development of quantum computations. Researchers at MIT, IBM and NASA’s Jet Propulsion Laboratory describe the technique for fabricating and testing individual...
Defect Control Yields More Reliable Qubits
CAMBRIDGE, Mass., Dec. 30, 2014 — Enhancing the fluorescent light emission from atomic defects in diamond could be a key step toward creating reliable qubits for quantum computers. A team of researchers from several institutions has demonstrated photonic cavities with Q factors of...
High-Q Metamaterial Resonator Different from the Crowd
SAN DIEGO, Dec. 11, 2014 — A new nanophotonic resonator efficiently traps light by exploiting a quantum phenomenon called bound states in the continuum (BIC). Researchers at the University of California, San Diego, said the metamaterial cavity could enable optical computing...
Photons Act Like Liquid, Crystal in Experiment
PRINCETON, N.J., Sept. 10, 2014 — A system for "crystallizing" photons could help answer fundamental questions about quantum physics.
‘Cannon’ Launches Single Photons
COPENHAGEN, Denmark, Sept. 2, 2014 — A new photonic "cannon" could provide the necessary light control for quantum encryption and computing.
Hydrogen Prevents UV Damage in Optical Fiber
GAITHERSBURG, Md., Aug. 12, 2014 — Hydrogen can fortify optical fibers, making them capable of sustained transmission of high-intensity UV light. A team from the National Institute of Standards and Technology created the new fibers, which they said could help reduce errors in logic...
Nanofiber Fabrication Boosts Quantum Computing
COLLEGE PARK, Md., June 19, 2014 — A new approach to fabricating optical nanofibers could enable the next generation of quantum computing. These ultra-high-transmission fibers, developed by researchers at the University of Maryland’s Joint Quantum Institute, could act as...
4 Photonics Projects Get Defense Funding
WASHINGTON, June 3, 2014 — The U.S. Department of Defense has awarded funding totaling $28.3 million for four photonics graduate research projects under its Multidisciplinary University Research Initiative (MURI). Brief summaries of the projects follow. For further...
New Switch Could Scale Up Quantum Computing
CAMBRIDGE, Mass., April 11, 2014 — A new technique to connect particles could assist in development of quantum computing systems.
Plasmons Show Useful Quantum Properties
PASADENA, Calif., April 4, 2014 — Surface plasmons could be a key piece of the ever-evolving quantum computing puzzle.
Ultracold Molecules Advance Quantum Computing
WEST LAFAYETTE, Ind., March 20, 2014 — Radical cooling could hold great potential for quantum computing and simulations. To that end, Purdue University researchers have created an ultracold molecule using lasers to remove the kinetic energy and to cool the atoms to -273 °C (-459...
Zero-Index Material Generates Nonlinear Light
BERKELEY, Calif., Dec. 6, 2013 — A unique optical metamaterial with a refractive index of zero was used to generate light waves that gain strength as they move through the material in all directions. This demonstration of “phase mismatch-free nonlinear light” holds...
Ultrafast spectroscopy reveals new uses for flawed gems
TUCSON, Ariz. – Ultrafast laser pulses have provided the first detailed observation of how energy travels through diamonds with specific flaws that provide interesting optical and electronic properties. A team led by University of Arizona assistant professor...
‘Photons On Demand’ Enable Compact Optical Chips
SYDNEY, Oct. 11, 2013 — Multiple imperfect photon sources can be combined on a single silicon chip to produce a much higher-quality source, say researchers in Australia. Such “photons on demand” will help create extremely compact optical chips. Researchers at...
Ultrafast Spectroscopy Reveals New Uses for Flawed Gems
TUCSON, Ariz., Oct. 9, 2013 — Ultrafast laser pulses have provided the first detailed observation of how energy travels through flawed diamonds. These flaws, known as nitrogen-vacancy centers, have interesting optical and electronic properties that are seen as promising for a...
Electrical Quantum States Translated to Optical Ones
SANTA BARBARA, Calif., Sept. 24, 2013 — Using a piezoelectric optomechanical crystal to generate a strong optical response, a UC Santa Barbara team has demonstrated a nanomechanical interface between optics and electronics, the first — and arguably the most challenging — step...
Photonic topological insulator could enable quantum computing
KESALSABA, Israel – As computers get faster and chips get denser, there is a need for smaller light-manipulating devices. But as devices get smaller, imperfections in the fabrication processes can make light move irregularly and unpredictably. To tackle this challenge,...
Metamaterials observe photonic spin Hall effect
BERKELEY, Calif. – A metamaterial surface constructed of V-shaped gold nanoantennas was used to obtain the strongest signal yet of the photonic spin Hall effect – a quantum mechanical optical phenomenon that could play a prominent role in the future of...
Quantum Computers Appear – and Are Put to Work
Jun 1, 2013 — Actual quantum computers are likely a decade or more away, but advances today are bringing them closer and closer. You can’t yet buy them online or at a big box store, but the day of quantum computers has drawn closer, thanks to recent...
Tailored photons generated from solid-state chips
CAMBRIDGE, England – A technique to generate single photons with tailored properties from laser-quality solid-state devices could bring us a step closer to a quantum Internet. Single photons will form an integral part of distributed quantum networks – or a...
Boson-Sampling Computer Prototyped
VIENNA, May 14, 2013 — An entirely new and efficient model of quantum computer — the boson-sampling computer — was successfully prototyped, bringing scientists a leap forward in the world of quantum computing.
Element Six, TU Delft Reach Diamond Quantum Network Milestone
SAN FRANCISCO, May 8, 2013 — Synthetic diamond maker Element Six, working in collaboration with Delft University of Technology in the Netherlands, entangled quantum bits, or qubits, in two synthetic diamonds separated in space — a step toward enabling new, quantum-based...
Qubits’ Quantum State Controlled by Laser Light
SANTA BARBARA, Calif., May 3, 2013 — The quantum state of a single atomic-sized defect in diamond — known as the nitrogen-vacancy (NV) center — can be manipulated with laser light, providing more unified control and versatility than conventional processes. The discovery opens up the...
Photonic Topological Insulator Demonstrated
KESALSABA, Israel, April 17, 2013 — A device protecting the transport of light through a unique honeycomblike lattice structure of helical waveguides has demonstrated the photonic equivalent of a topological insulator. The discovery could bring us a step closer to quantum computing,...
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June 2024
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