Security
There is a computing revolution coming, although nobody knows exactly when. What are known as "quantum computers" will be substantially more powerful than the devices we use today, capable of performing many types of computation ...
Aug 25, 2016
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27
Business
Over the next decade, quantum computers are expected to have a transformative impact on numerous industry sectors, as they surpass the computational capabilities of classical computers. In finance, for example, quantum computing ...
Mar 12, 2024
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159
Engineering
Today's best digital computers still struggle to solve, in a practical time frame, a certain class of problem: combinatorial optimization problems, or those that involve combing through large sets of possibilities to find ...
Oct 29, 2019
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214
Engineering
LED lights and monitors, and quality solar panels were born of a revolution in semiconductors that efficiently convert energy to light or vice versa. Now, next-generation semiconducting materials are on the horizon, and in ...
Jan 15, 2019
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88
Computer Sciences
How do you find novel materials with very specific properties—for example, special electronic properties which are needed for quantum computers? This is usually a very complicated task: various compounds are created, in ...
Sep 20, 2022
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34
Electronics & Semiconductors
At the IEEE International Electron Devices Meeting (IEDM2020), R&D hub IMEC demonstrated the first flexible hardware platform for silicon spin qubit integration on 300 mm wafers. Physicists from IMEC also proposed novel ways ...
Dec 21, 2020
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20
Robotics
Hacked bank and Twitter accounts, malicious power outages and attempts to tamper with medical records threaten the security of the nation's health, money, energy, society and infrastructure. Harnessing the laws of nature—namely ...
May 25, 2022
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293
Computer Sciences
Google said it has achieved a breakthrough in quantum computing research, saying an experimental quantum processor has completed a calculation in just a few minutes that would take a traditional supercomputer thousands of ...
Oct 23, 2019
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485
Business
The Australian government has announced a pledge of approximately A$940 million (US$617 million) to PsiQuantum, a quantum computing start-up company based in Silicon Valley.
Apr 30, 2024
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27
Computer Sciences
A theoretical proof shows that a technique called overparametrization enhances performance in quantum machine learning for applications that stymie classical computers.
Jun 26, 2023
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155
In physics, a quantum (plural: quanta) is an indivisible entity of a quantity that has the same units as the Planck constant and is related to both energy and momentum of elementary particles of matter (called fermions) and of photons and other bosons. The word comes from the Latin "quantus", for "how much." Behind this, one finds the fundamental notion that a physical property may be "quantized", referred to as "quantization". This means that the magnitude can take on only certain discrete numerical values, rather than any value, at least within a range. There is a related term of quantum number.
A photon is often referred to as a "light quantum". The energy of an electron bound to an atom (at rest) is said to be quantized, which results in the stability of atoms, and of matter in general. But these terms can be a little misleading, because what is quantized is this Planck's constant quantity whose units can be viewed as either energy multiplied by time or momentum multiplied by distance.
Usually referred to as quantum "mechanics", it is regarded by virtually every professional physicist as the most fundamental framework we have for understanding and describing nature at the infinitesimal level, for the very practical reason that it works. It is "in the nature of things", not a more or less arbitrary human preference.
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