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Archive for the ‘quantum physics’ category: Page 59

Sep 4, 2024

Quantum error correction research reveals fundamental insights into quantum systems

Posted by in categories: computing, quantum physics

As scientists and researchers increasingly look to quantum computing to aid in complex problem-solving and advance our understanding of the universe—quantum error correction has become a critical area of scientific inquiry.

Sep 4, 2024

Panprotopsychism: Panpsychism

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

, while an interesting thought experiment, does not seem to account for the fact that many phenomena are materialistic or physical enough to have no resemblance with the qualities we typically attribute to consciousness, such as experience and motive.

Panprotopsychism, by contrast, does not require matter to be intrinsically conscious, only that it be comprised of features equaling consciousness when combined.

Continue reading “Panprotopsychism: Panpsychism” »

Sep 4, 2024

Physicists Are Pretty Sure We Can Travel Faster Than the Speed of Light, Research Shows

Posted by in categories: mathematics, quantum physics

New research shows that the “superluminal observer” needs three separate time dimensions for a warp-speed math trick that would please even Galileo.

TL;DR

The concept of superluminal observers, proposed by Andrzej Dragan’s team, explores how faster-than-light travel might unify general relativity and quantum mechanics. By introducing three dimensions of time alongside one dimension of space, this research challenges our current understanding of the universe. Quantum phenomena, such as superposition and indeterminism, could be reinterpreted through the lens of a superluminal observer, where space and time swap roles at warp speeds. This theoretical framework suggests that the laws of physics remain consistent even at superluminal speeds, potentially paving the way for a unified field theory that reconciles these two fundamental branches of physics.

Sep 4, 2024

Can we solve quantum theory’s biggest problem by redefining reality?

Posted by in categories: particle physics, quantum physics

With its particles in two places at once, quantum theory strains our common sense notions of how the universe should work. But one group of physicists says we can get reality back if we just redefine its foundations.

By Karmela Padavic-Callaghan

Sep 4, 2024

Bridging quantum mechanics and cosmology: The role of the generalized uncertainty principle

Posted by in categories: cosmology, quantum physics

In a continuous pursuit to understand the fundamental laws that govern the universe, researchers have ventured deep into the realms of string theory, loop quantum gravity, and quantum geometry. These advanced theoretical frameworks have revealed an especially compelling concept: the generalized uncertainty principle (GUP).

Sep 4, 2024

New Quantum Effect in Textbook Chemistry Law

Posted by in categories: chemistry, computing, encryption, law, quantum physics

The observation of quantum modifications to a well-known chemical law could lead to performance improvements for quantum information storage.

The Arrhenius law says that the rate of a chemical reaction should decrease steadily as you increase the energy barrier between initial and final states. Now researchers have found a system that obeys a quantum version of the Arrhenius law, where the rate does not drop smoothly but instead decreases in a staircase pattern [1]. The system is a type of quantum bit (qubit) that is particularly robust against environmental disturbances. The researchers demonstrated that they can take advantage of this quantum effect to improve the qubit’s performance.

Technologies such as quantum computers and quantum cryptography use qubits to store information, and one of the continuing challenges is that uncontrolled environmental effects can change the state of a qubit. The most common solutions require large amounts of hardware, but an alternative method is to use qubits that are more error resistant, such as so-called cat qubits. The information in these qubits is stored in robust combinations of quantum states that resemble the states in Schrödinger’s famous feline thought experiment (see Synopsis: Quantum-ness Put on the Scale).

Sep 4, 2024

Researchers demonstrate spontaneous synchronization of quantum vortices in semiconductor microcavities

Posted by in category: quantum physics

Researchers from Skoltech, Universitat Politècnica de València, Institute of Spectroscopy of RAS, University of Warsaw, and University of Iceland have demonstrated the spontaneous formation and synchronization of multiple quantum vortices in optically excited semiconductor microcavities.

Sep 4, 2024

Researchers create an ‘imprint’ on a super photon

Posted by in categories: particle physics, quantum physics

Thousands of light particles can merge into a type of “super photon” under certain conditions. Researchers at the University of Bonn have now been able to use “tiny nano molds” to influence the design of this so-called Bose-Einstein condensate. This enables them to shape the speck of light into a simple lattice structure consisting of four points of light arranged in quadratic form. Such structures could potentially be used in the future to make the exchange of information between multiple participants tap-proof.

The results have now been published in the journal Physical Review Letters (“Bose-Einstein Condensation of Photons in a Four-Site Quantum Ring”).

By creating indents on the reflective surfaces (shown on the left in an exaggerated form; the reflective surfaceis facing upwards), the researchers were able to imprint a structure ontothe photon condensate (right). (Image: IAP, Universität Bonn)

Sep 4, 2024

Lightning in a diamond to power the quantum revolution

Posted by in categories: climatology, computing, quantum physics

Diamonds are forever 💎 A team of scientists from UniMelb, RMIT University and The City College of New York were able to observe lightning in a diamond ⚡️ Diamond chips can potentially be used in electronics and are more powerful than silicon. Tap to learn more ➡️


We also don’t yet fully understand how charges flow inside diamond, and how unavoidable impurities and defects affect these electrical properties.

In a recent study with colleagues from the University of Melbourne, RMIT University and the City College of New York, we sought to combine electrical measurements of a diamond optoelectronic device with 3D optical microscopy.

Continue reading “Lightning in a diamond to power the quantum revolution” »

Sep 3, 2024

Open problem in quantum entanglement theory solved after nearly 25 years

Posted by in category: quantum physics

Non-existence of universal maximally entangled isospectral mixed states has implications for research on quantum technologies.

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