Tag Archives: quantum

Quantum Chromodynamics

In particle collider experiments, elementary particle interactions with large momentum transfer produce quarks and gluons (known as partons) whose evolution is governed by the strong force, as described by the theory of quantum chromodynamics. These partons subsequently emit further partons in a process that can be described as a parton …

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Ancient Space Dust

When the solar system was first organizing itself, a disk of gas and dust took shape around the sun’s central mass. It eventually sorted itself into the system of planets we see today. But there are things we don’t know about how that happened. One observation that has been challenging …

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Quantum Teleportation

Quantum teleportation of an unknown input state from an outside source onto a quantum node is considered one of the key components of long-distance quantum communication protocols. It has already been demonstrated with pure photonic quantum systems as well as atomic and solid-state spin systems linked by photonic channels. Now, …

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IBM Quantum Computing

  IBM has been scaling up its own quantum computing efforts over the past few years, and the company is now claiming it’ll deliver a 100x improvement in certain workloads. The company isn’t going to deliver this improvement solely through hardware, but through the deployment of new software tools, algorithms, …

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Quantum Phenomenon

A team of physicists from the United States and Japan has experimentally observed a phenomenon called quantum oscillation in a two-dimensional topological insulator — monolayer tungsten ditelluride (WTe2). The team’s findings, published in the journal Nature, hint at the existence of an entirely new type of quantum particle — a …

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Quantum Teleportation

Quantum teleportation is essential for many quantum information technologies, including long-distance quantum networks. Using fiber-coupled devices, including state-of-the-art low-noise superconducting nanowire single-photon detectors and off-the-shelf optics, scientists from Fermilab, Caltech, ATT, NASA’s Jet Propulsion Laboratory, the University of Calgary, and Harvard University have demonstrated sustained, long-distance (44 km of fiber) …

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IBM Quantum Roadmap

  IBM is one of the companies jockeying for position in the nascent field of quantum computing and the company thinks it has a roadmap to develop a universal quantum computer with up to 1,000 qubits. Such a chip would be capable of more complex workloads than any existing chip. …

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Quantum Time Crystal

An international team of physicists has studied the controlled interaction of two spatially separated time crystals. Experimental set-up. Quartz-glass sample container cylinder is filled partially with superfluid 3He-B, leaving a free surface of the superfluid approximately 3 mm above the centre of the surrounding coil system. The space above the …

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Researchers Invent Nanoscale ‘Refrigerator’ for Quantum Computers

A team of researchers from the Department of Applied Physics at Aalto University in Finland has invented a quantum-circuit refrigerator, which can reduce errors in quantum computing. Photo of the centimeter-sized silicon chip, which has two parallel superconducting oscillators and the quantum-circuit refrigerators connected to them. Image credit: Kuan Yen …

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Research Challenges Our Understanding of Quantum Theory

A team of researchers at the University of East Anglia (UEA), UK, has discovered a new mechanism involved in the generation of paired photons. In this illustration, one photon (purple) carries a million times the energy of another (yellow). Image credit: NASA / Sonoma State University / Aurore Simonnet. The …

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