Quantum Computing News

Yale Engineers Advance Quantum Technology With Photon Control

November 1, 2016

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Advancing Quantum Technology With Photon Control

Engineers from Yale University have developed a new technique to control the frequency of single photons. The ability to control the frequency of single photons is crucial to realize the potential of quantum communications and quantum computing. The current methods for changing photon frequency, however, bring with them significant drawbacks. Researchers in the lab of […]

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Yale Engineers Develop A New Chip That Could Advance Quantum Technology

October 5, 2016

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New Chip Could Advance Quantum Technology

Yale engineers have developed a new device that converts visible light to infrared light suitable for fiber-optic transmission without destroying the light’s quantum state. The lab of Hong Tang, Llewellyn West Jones, Jr. Professor of Electrical Engineering & Physics, has developed a device that converts visible light to infrared light, a crucial step in building […]

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Yale Researchers Cross the “Break Even” Point in Preserving a Bit of Quantum Information

July 21, 2016

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Researchers Cross the Break Even Point in Preserving Quantum Information

Using a novel system to encode, spot errors, decode, and correct errors in a quantum bit, researchers at Yale University have developed a device that lengthens the life of quantum information. For the first time, researchers at Yale have crossed the “break even” point in preserving a bit of quantum information for longer than the […]

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Researchers Develop A Universal Quantum Gate

July 13, 2016

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Quantum Gate Allows Light Particles to Interact with Each Other

Scientists have now developed a universal quantum gate, which could become the key component in a quantum computer. Light particles completely ignore each other. In order that these particles can nevertheless switch each other when processing quantum information, researchers at the Max Planck Institute of Quantum Optics in Garching have now developed a universal quantum […]

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Schrödinger’s Cat Gets a Second Box

May 27, 2016

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A Schrödinger Cat Living in Two Boxes

A team of physicists from Yale University have given Schrödinger’s cat a second box to play in, and the result may help further the quest for reliable quantum computing. Schrödinger’s cat is a well-known paradox that applies the concept of superposition in quantum physics to objects encountered in everyday life. The idea is that a […]

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Researchers Develop a New Quantum Error Correcting Code

May 26, 2015

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A New Quantum Error Correcting Code

A team of researchers from MIT, Google, the University of Sydney, and Cornell University present a new quantum error correcting code that requires measurements of only a few quantum bits at a time to ensure consistency between one stage of a computation and the next. Quantum computers are largely theoretical devices that could perform some […]

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New Photon Detectors – A Crucial Step Toward Quantum Chips

January 9, 2015

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MIT Researchers Take a Step Toward Quantum Chips

In a new study, researchers describe a micrometer-scale flip-chip process that enables scalable integration of superconducting nanowire single-photon detectors on a range of photonic circuits. A team of researchers has built an array of light detectors sensitive enough to register the arrival of individual light particles, or photons, and mounted them on a silicon optical […]

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New Design Simplifies Superconducting Circuits

October 20, 2014

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MIT Circuit Design Simplifies Superconducting Circuits

MIT researchers present a new circuit design that could unlock the power of experimental superconducting computer chips and make simple superconducting devices much cheaper to manufacture. Computer chips with superconducting circuits — circuits with zero electrical resistance — would be 50 to 100 times as energy-efficient as today’s chips, an attractive trait given the increasing […]

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Silicon Qubits Could Be the Key to a Quantum Revolution

October 15, 2014

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Silicon Qubits Are Ready for Large Scale Quantum Computers

Two newly published studies show that the accuracy and lifetime of silicon qubits are now suitable for large-scale quantum computers. A dramatic increase in the amount of time data can be stored on a single atom means silicon could once again play a vital role in the development of super-fast computers. The silicon chip revolutionized […]

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Yale Engineers Develop Hybrid System for Quantum Communication

October 9, 2014

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Yale Engineers Develop System for Quantum Communication

Using microwaves and magnets, researchers at the Yale School of Engineering & Applied Science developed a hybrid system for quantum communication. Yale engineers have developed a hybrid system that strongly couples magnons—the smallest unit of measurement for a magnetic spin excitation—with microwave photons. According to the researchers, the hybrid system achieved an ultrahigh coherence between […]

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Scientists Demonstrate a Photonic Router for the First Time

July 15, 2014

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Researchers Demonstrate a Photonic Router for the First Time

Scientists from the Weizmann Institute of Science have taken another step forward toward building quantum computers, demonstrating a photonic router for the first time. Weizmann Institute scientists have demonstrated for the first time a photonic router – a quantum device based on a single atom that enables routing of single photons by single photons. This […]

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Physicists Track Quantum Errors in Real Time

July 14, 2014

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Yale Physicists Track Quantum Errors in Real Time

A team of scientists has tackled the first step in quantum error correction, successfully identifying errors as they happen in real time. Scientists at Yale University have demonstrated the ability to track real quantum errors as they occur, a major step in the development of reliable quantum computers. They report their results in the journal […]

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Researchers Demonstrate the Scalability of Quantum Dot Architectures

July 11, 2014

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New Research Could Form the Basis for Future Scalable Quantum Computers

New research from the RIKEN Center for Emergent Matter Science reveals how arrays of electrons trapped in nanoscale circuitry could form the basis for future scalable quantum computers. A single electron trapped in a semiconductor nanostructure can form the most basic of building blocks for a quantum computer. Before practical quantum computers can be realized, […]

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Researchers Discover “Magic” Ingredient for Quantum Computing

June 12, 2014

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Contextuality Supplies the Magic for Quantum Computation

A newly published study establishes that quantum contextuality is a critical resource for quantum speed-up within the leading model for fault-tolerant quantum computation, magic state distillation. A form of quantum “weirdness” has been found, by researchers at Waterloo’s Institute for Quantum Computing (IQC), to be a key ingredient for building a quantum computer. In a […]

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A New Possibility for Storing and Processing Quantum Information

May 14, 2014

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New Quantum Memory on the Horizon

Scientists from the Max Planck Institute have succeeded in performing high-resolution spectroscopy and microscopy on individual rare earth ions in a crystal, opening the door to future possibilities for storing and processing quantum information. A promising material is lining itself up as a candidate for a quantum memory. A team at the Max Planck Institute […]

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New Technique Allows Particles to Switch the Quantum State of Each Other

April 10, 2014

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New Method Allows Scientists to Connect Light Particles

Researchers from MIT and Harvard University have developed a new technique that couples a lone atom with single light particle, allowing both the atom and photon to switch the quantum state of the other particle. Using a laser to place individual rubidium atoms near the surface of a lattice of light, scientists at MIT and […]

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Researchers Perform Logic Operation and Error Correction in a Quantum Register

February 21, 2014

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Quantum Computation in Diamond

An international team of physicists has discovered a way to control the quantum system of a diamond with a small number of nitrogen impurities. Computers do not necessarily have to perform error-free calculations in order to provide perfect results – they only need to correct their errors in a reliable way. And this will become […]

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Researchers Create World’s Largest Quantum Cluster

November 19, 2013

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Researchers Create Worlds Largest Quantum Cluster

In a newly published study, researchers detail the experimental generation and full characterization of an ultra-large-scale entangled state containing more than 10,000 entangled modes, which is an improvement by 3 orders of magnitude over the largest entangled states created to date. ANU PhD student Seiji Armstrong has made a quantum leap towards next-generation computing. Working […]

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