Computer Sciences
Researchers from the University of Innsbruck have unveiled a novel method to prepare quantum operations on a given quantum computer, using a machine learning generative model to find the appropriate sequence of quantum gates ...
May 21, 2024
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58
Hardware
At the annual IBM Quantum Summit in New York, IBM debuted IBM Quantum Heron, the first in a new series of utility-scale quantum processors with an architecture engineered over the past four years to deliver IBM's highest ...
Dec 12, 2023
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10
Computer Sciences
Never assume you can have the last laugh on IBM's predictions. In fact, seldom assume IBM is off-base about ways in which technology might move forward. Not that IBM is the only wised-up voice to give pause. But back in ...
Computer Sciences
An interdisciplinary team of Cornell and Harvard University researchers developed a machine learning tool to parse quantum matter and make crucial distinctions in the data, an approach that will help scientists unravel the ...
Jul 7, 2021
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336
Computer Sciences
Near-term quantum computers, quantum computers developed today or in the near future, could help to tackle some problems more effectively than classical computers. One potential application for these computers could be in ...
Electronics & Semiconductors
Logic gates, the basic elements of the digital world, can now be built using one single molecule. An example is XOR, with two inputs. If at least one of them is "1," then the output is "1," as well; otherwise, it is 0. These ...
Jun 15, 2022
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87
Electronics & Semiconductors
Quantum computing offers the promise of solutions to previously unsolvable problems, but in order to deliver on this promise, it will be necessary to preserve and manipulate information that is contained in the most delicate ...
Feb 1, 2021
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63
Engineering
From access cards and key fobs to Bluetooth speakers, the security of communication between wireless devices is critical to maintaining privacy and preventing theft. Unfortunately, these tools are not foolproof and information ...
Apr 26, 2023
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97
Engineering
It's fairly reasonable to assume that an encrypted email can't be seen by prying eyes. That's because in order to break through most of the encryption systems we use on a day-to-day basis, unless you are the intended recipient, ...
Mar 22, 2022
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243
Engineering
New technological devices are prioritizing non-invasive tracking of vital signs, not only for fitness monitoring, but also for the prevention of common health problems such as heart failure, hypertension and stress-related ...
Sep 13, 2019
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275
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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