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Archive for the ‘quantum physics’ category: Page 278

Nov 10, 2021

Adding sound to quantum simulations

Posted by in categories: media & arts, particle physics, quantum physics

When sound was first incorporated into movies in the 1920s, it opened up new possibilities for filmmakers such as music and spoken dialogue. Physicists may be on the verge of a similar revolution, thanks to a new device developed at Stanford University that promises to bring an audio dimension to previously silent quantum science experiments.

In particular, it could bring sound to a common quantum science setup known as an , which uses a crisscrossing mesh of laser beams to arrange atoms in an orderly manner resembling a crystal. This tool is commonly used to study the fundamental characteristics of solids and other phases of matter that have repeating geometries. A shortcoming of these lattices, however, is that they are silent.

“Without sound or vibration, we miss a crucial degree of freedom that exists in real materials,” said Benjamin Lev, associate professor of applied physics and of physics, who set his sights on this issue when he first came to Stanford in 2011. “It’s like making soup and forgetting the salt; it really takes the flavor out of the quantum ‘soup.’”.

Nov 10, 2021

‘Back to basics’ approach helps unravel new phase of matter

Posted by in categories: computing, particle physics, quantum physics

A new phase of matter, thought to be understandable only using quantum physics, can be studied with far simpler classical methods.

Researchers from the University of Cambridge used computer modeling to study potential new phases of matter known as prethermal discrete time crystals (DTCs). It was thought that the properties of prethermal DTCs were reliant on : the strange laws ruling particles at the subatomic scale. However, the researchers found that a simpler approach, based on classical physics, can be used to understand these mysterious phenomena.

Understanding these new phases of matter is a step forward towards the control of complex many-body systems, a long-standing goal with various potential applications, such as simulations of complex quantum networks. The results are reported in two joint papers in Physical Review Letters and Physical Review B.

Nov 9, 2021

How a novel radio frequency control system enhances quantum computers

Posted by in categories: computing, quantum physics

A team of physicists and engineers at Lawrence Berkeley National Laboratory (Berkeley Lab) successfully demonstrated the feasibility of low-cost and high-performance radio frequency modules for qubit controls at room temperature. They built a series of compact radio frequency (RF) modules that mix signals to improve the reliability of control systems for superconducting quantum processors. Their tests proved that using modular design methods reduces the cost and size of traditional RF control systems while still delivering superior or comparable performance levels to those commercially available.

Their research, featured as noteworthy in the Review of Scientific Instruments and selected as a Scilight by the American Institute of Physics, is and has been adopted by other quantum information science (QIS) groups. The team expects the RF modules’ compact design is suitable for adaptation to the other qubit technologies as well. The research was conducted at the Advanced Quantum Testbed (AQT) at Berkeley Lab, a collaborative research program funded by the U.S. Department of Energy’s Office of Science.

Nov 9, 2021

Clever Combination of Quantum Physics and Molecular Biology

Posted by in categories: biological, particle physics, quantum physics

A new analytical technique is able to provide hitherto unattainable insights into the extremely rapid dynamics of biomolecules. The team of developers, led by Abbas Ourmazd from the University of Wisconsin–Milwaukee and Robin Santra from DESY

Commonly abbreviated as DESY, the Deutsches Elektronen-Synchrotron (English German Electron Synchrotron) is a national research center in Germany that operates particle accelerators used to investigate the structure of matter. It is a member of the Helmholtz Association and operates at sites in Hamburg and Zeuthen.

Nov 9, 2021

Using new quantum computing architectures to create time crystals

Posted by in categories: computing, quantum physics

UC Berkeley physicist Norman Yao first described five years ago how to make a time crystal—a new form of matter whose patterns repeat in time instead of space. Unlike crystals of emerald or ruby, however, those time crystals existed for only a fraction of a second.

But the time has arrived for time crystals. Since Yao’s original proposal, new insights have led to the discovery that time crystals come in many different forms, each stabilized by its own distinct mechanism.

Using new quantum computing architectures, several labs have come close to creating a many-body localized version of a time crystal, which uses disorder to keep periodically-driven quantum qubits in a continual state of subharmonic jiggling—the qubits oscillate, but only every other period of the drive.

Nov 9, 2021

Nobody Knows What TIME Really Is. But it might be this… — YouTube

Posted by in categories: futurism, quantum physics

Signup for your FREE trial to Wondrium here: http://ow.ly/NwIS30rNQ5m — Be sure to check out Sean Carroll’s series called, “Mysteries of modern physics: Time” — I highly recommend it!

A good definition of information in physics: “information contained in a physical system = the number of yes/no questions you need to get answered to fully specify the system.”

Continue reading “Nobody Knows What TIME Really Is. But it might be this… — YouTube” »

Nov 8, 2021

Loop Quantum Cosmology Theory: Cosmic Tango Between the Very Small and the Very Large

Posted by in categories: cosmology, quantum physics

Theory of loop quantum cosmology describes how tiny primordial features account for anomalies at the largest scales of the universe.

While Einstein’s theory of general relativity can explain a large array of fascinating astrophysical and cosmological phenomena, some aspects of the properties of the universe at the largest-scales remain a mystery. A new study using loop quantum cosmology—a theory that uses quantum mechanics to extend gravitational physics beyond Einstein’s theory of general relativity—accounts for two major mysteries. While the differences in the theories occur at the tiniest of scales—much smaller than even a proton—they have consequences at the largest of accessible scales in the universe. The study, which was published online on July 29 2020, in the journal Physical Review Letters, also provides new predictions about the universe that future satellite missions could test.

While a zoomed-out picture of the universe looks fairly uniform, it does have a large-scale structure, for example because galaxies and dark matter are not uniformly distributed throughout the universe. The origin of this structure has been traced back to the tiny inhomogeneities observed in the Cosmic Microwave Background (CMB)—radiation that was emitted when the universe was 380 thousand years young that we can still see today. But the CMB itself has three puzzling features that are considered anomalies because they are difficult to explain using known physics.

Nov 6, 2021

A New Quantum Computing Method Is 2,500 Percent More Efficient

Posted by in categories: computing, information science, quantum physics

A new method for quantum computing algorithms achieved an unprecedented efficiency that’s 2,500% more effective! And it could change everything.

Nov 5, 2021

Quantum cognition: a new theoretical approach to psychology

Posted by in categories: computing, neuroscience, quantum physics

Circa 2015 what if we didn’t need computers we only needed our minds upgraded? Quantum cognition talks about a theory of an upgraded mind.


What type of probability theory best describes the way humans make judgments under uncertainty and decisions under conflict? Although rational models of cognition have become prominent and have achieved much success, they adhere to the laws of classical probability theory despite the fact that human reasoning does not always conform to these laws. For this reason we have seen the recent emergence of models based on an alternative probabilistic framework drawn from quantum theory. These quantum models show promise in addressing cognitive phenomena that have proven recalcitrant to modeling by means of classical probability theory. This review compares and contrasts probabilistic models based on Bayesian or classical versus quantum principles, and highlights the advantages and disadvantages of each approach.

Nov 5, 2021

Consciousness & Time

Posted by in categories: education, quantum physics, robotics/AI

The only experiential time is NOW. Our phenomenal minds spring into existence at increments of conscious instants. The sequence of these Nows constitutes our “stream” of consciousness. D-Theory of Time, or Digital Presentism, is predicated on reversible quantum computing at large and gives us a coherent theoretical framework on the nature of time. In the absence of observers, the arrow of time doesn’t exist — there’s no cosmic flow of time. Instead, each conscious observer is a digital pattern flowing within a multidimensional matrix.

Based on the Cybernetic Theory of Mind by evolutionary cyberneticist Alex Vikoulov that he defends in his magnum opus The Syntellect Hypothesis: Five Paradigms of the Mind’s Evolution, comes a newly-released documentary Consciousness: Evolution of the Mind.

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