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Quantum Computers News -- ScienceDaily
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Quantum Computers News
March 20, 2020
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High-speed data concept (stock image). | Credit: (c) Sergii / stock.adobe.com

Using Sound and Light to Generate Ultra-Fast Data Transfer

Feb. 11, 2020 — Researchers have made a breakthrough in the control of terahertz quantum cascade lasers, which could lead to the transmission of data at the rate of 100 gigabits per second ... read more
Quantum computing concept (stock image). | Credit: (c) vchalup / stock.adobe.com

What a Pair! Coupled Quantum Dots May Offer a New Way to Store Quantum Information

Jan. 29, 2020 — Researchers have for the first time created and imaged a novel pair of quantum dots -- tiny islands of confined electric ... read more

Heat Energy Leaps Through Empty Space, Thanks to Quantum Weirdness

Dec. 11, 2019 — A surprising new study shows that heat energy can leap across a few hundred nanometers of a complete vacuum, thanks to a quantum mechanical phenomenon called the Casimir interaction. Though this ... read more

Toward More Efficient Computing, With Magnetic Waves

Nov. 28, 2019 — Researchers have devised a novel circuit design that enables precise control of computing with magnetic waves -- with no electricity needed. The advance takes a step toward practical magnetic-based ... read more
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Atomic Vacancy as Quantum Bit

Mar. 2, 2020 — Physicists have experimentally observed spin centers in two-dimensional materials. Such centers can act as quantum bits -- even at room ... read more

Measuring Electron Spin Qubit Without Demolishing It

Mar. 2, 2020 — Scientists have succeeded in taking repeated measurements of the spin of an electron in a silicon quantum dot (QD), without changing the spin in the process. This type of 'non-demolition' ... read more

Ultrafast Probing Reveals Intricate Dynamics of Quantum Coherence

Feb. 28, 2020 — Ultrafast, multidimensional spectroscopy unlocks macroscopic-scale effects of quantum electronic correlations. Researchers found that low-energy and high energy states are correlated in a layered, ... read more

Quantum Researchers Able to Split One Photon Into Three

Feb. 27, 2020 — Researchers report the first occurrence of directly splitting one photon into three. The occurrence, the first of its kind, used the spontaneous parametric down-conversion method (SPDC) in quantum ... read more

Scientists 'Film' a Quantum Measurement

Feb. 26, 2020 — Measuring a quantum system causes it to change -- one of the strange but fundamental aspects of quantum mechanics. Researchers have now been able to demonstrate how this change ... read more

Defects Add Color to Quantum Systems

Feb. 24, 2020 — Researchers are investigating light-emitting defects in materials that may someday form the basis of quantum-based technologies, such as quantum computers, quantum networks or engines that run on ... read more

10,000 Times Faster Calculations of Many-Body Quantum Dynamics Possible

Feb. 20, 2020 — How an electron behaves in an atom, or how it moves in a solid, can be predicted precisely with the equations of quantum mechanics. These theoretical calculations agree with the results from ... read more

Topological Materials Outperform Through Quantum Periodic Motion

Feb. 18, 2020 — Scientists have discovered that applying vibrational motion in a periodic manner may be the key to preventing dissipations of the desired electron states that would make advanced quantum computing ... read more

Artificial Atoms Create Stable Qubits for Quantum Computing

Feb. 11, 2020 — Quantum computing researchers have made improved qubits by exploiting concepts from high school ... read more

Supercomputers Help Link Quantum Entanglement to Cold Coffee

Jan. 31, 2020 — Theoretical physicists have found a deep link between one of the most striking features of quantum mechanics -- quantum entanglement -- and thermalization, which is the process in which something ... read more

Quantum Physics: On the Way to Quantum Networks

Jan. 24, 2020 — Physicists have successfully demonstrated the transport of an entangled state between an atom and a photon via an optic fiber over a distance of up to 20 km -- thus setting a new ... read more

Quantum Experiments Explore Power of Light for Communications, Computing

Jan. 23, 2020 — Quantum researchers have conducted a series of experiments to gain a better understanding of quantum mechanics and pursue advances in quantum networking and quantum computing, which could lead to ... read more

Ghostly Particles Detected in Condensates of Light and Matter

Jan. 23, 2020 — Discover 'ghostly' particles and quantum depletion. A new study makes the first observation of 'ghost particles' from Bose-Einstein condensates via 'quantum depletion': ... read more

How Sensitive Can a Quantum Detector Be?

Jan. 17, 2020 — Measuring the energy of quantum states requires detecting energy changes so exceptionally small they are hard to pick out from background fluctuations, like using only a thermometer to try and work ... read more

What's MER? A New Way to Measure Quantum Materials

Jan. 16, 2020 — Experimental physicists have combined several measurements of quantum materials into one in their ongoing quest to learn more about manipulating and controlling the behavior of them for possible ... read more

Quantum Physics: Controlled Experiment Observes Self-Organized Criticality

Jan. 16, 2020 — Researchers have observed important characteristics of complex systems in a lab experiment. Their discovery could facilitate the development of quantum ... read more

AlphaZero Learns to Rule the Quantum World

Jan. 16, 2020 — The chess world was amazed when the computer algorithm AlphaZero learned, after just four hours on its own, to beat the best chess programs built on human expertise. Now a research group has used the ... read more

Electron Spins in Slowly Moving Quantum Dots May Be Controlled by Electric Fields

Jan. 15, 2020 — A new article presents a theoretical analysis of electron spins in moving semiconductor quantum dots, showing how these can be controlled by electric fields in a way that suggests they may be usable ... read more

Colloidal Quantum Dot Laser Diodes Are Just Around the Corner

Jan. 14, 2020 — Scientists have incorporated meticulously engineered colloidal quantum dots into a new type of light emitting diodes (LEDs) containing an integrated optical resonator, which allows them to function ... read more

Indeterminist Physics for an Open World

Jan. 7, 2020 — Classical physics is characterized by the equations describing the world. Yet our day-to-day experience is struck by this deterministic vision of the world. A physicist has been analyzing the ... read more
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