Electrons in two-dimensional hexagonal materials have an extra degree of freedom, the valley pseudospin, that can be used to encode and process quantum information. Valley-selective excitations, governed by the circularly polarized light resonant with the material’s bandgap, are the foundation of valleytronics. It is often assumed that achieving valley selective excitation in pristine graphene with all-optical means is not possible due to the inversion symmetry of the system. Here, we demonstrate that both valley-selective excitation and valley-selective high-harmonic generation can be achieved in pristine graphene by using a combination of two counter-rotating circularly polarized fields, the fundamental and its second harmonic. Controlling the relative phase between the two colors allows us to select the valleys where the electron–hole pairs and higher-order harmonics are generated. We also describe an all-optical method for measuring valley polarization in graphene with a weak probe pulse. This work offers a robust recipe to write and read valley-selective electron excitations in materials with zero bandgap and zero Berry curvature.
Quantum physics is directly linked to consciousness: Observations not just change what is measured, they create it… Here’s the next episode of my new documentary Consciousness: Evolution of the Mind (2021), Part II: CONSCIOUSNESS & INFORMATION
An Australian/German company is developing powerful quantum accelerators the size of graphics cards. They work at room temperature, undercutting and outperforming today’s huge, cryo-cooled quantum supercomputers, and soon they’ll be small enough for mobile devices.
THEOGENESIS: Transdimensional Propagation & Universal Expansion ― a new book on quantum cosmology, computational physics and posthumanism by evolutionary cyberneticist Alex M. Vikoulov ― comes with a trailer you might find more than just interesting: Release Date: October, 1 2021; Written by Alex M. Vikoulov; Publisher: Ecstadelic Media Group, Burlingame, California, USA; Format: Kindle eBook; Print Length: 211 pages; ISBN: 9781733426183; Discounted Pre-Order Price: $7.99. *Pre-order eBook now with just 1 click and get your copy auto-delivered to your device on October 1 2021: https://www.amazon.com/dp/B09F858NBZ?tag=lifeboatfound-20?tag=lifeboatfound-20 #THEOGENESIS #QuantumCosmology #ComputationalPhysics #CyberneticTheoryofMind #posthumanism #cybernetics #theosophy #futurism
“Having invented the gods, perhaps we can turn into them.” –Alan Harrington, The Immortalist.
Whereas the level of our posthuman syntelligence may be trillions upon trillions of times more powerful than it is today, nothing will prevent it to expand both in outer space and inner space. Isn’t it the nature of intelligence to acquire the ultimate knowledge — everything that can be known? A number of prominent physicists argue that the Technological Singularity is inevitable and the destiny of our Syntellect is to live forever, expand universally and finally reach the networked mind of universal proportions, living conscious universal superbeing.
If we extrapolate the past and current trends in increasing complexity and integration of self-aware neural networks leading to the Syntellect, we can ultimately envision a superintelligent entity encompassing our entire Universe, creating an infinite number of simulated universes, as well as many other spectacular emergent features. This picture bears a striking resemblance to the familiar concept of an immortal, omnipresent, omniscient, omnipotent, and omnibenevolent entity. Spiritually inclined rationalists may view this ongoing evolutionary process as one of ‘Theogenesis’. An interesting question is whether it has already happened elsewhere. We are now laying the foundation for the cognitive architecture of the Universal Mind. Many of our achievements in information engineering may persist forever and eventually become parts of the internal architecture of “God.”
By harnessing quantum phenomena, quantum devices have the potential to outperform their classical counterparts. Here, we examine using wave function symmetry as a resource to enhance the performance of a quantum Otto engine. Previous work has shown that a bosonic working medium can yield better performance than a fermionic medium. We expand upon this work by incorporating a singular interaction that allows the effective symmetry to be tuned between the bosonic and fermionic limits. In this framework, the particles can be treated as anyons subject to Haldane’s generalized exclusion statistics. Solving the dynamics analytically using the framework of “statistical anyons”, we explore the interplay between interparticle interactions and wave function symmetry on engine performance.
Basically this was found out in the 1980s and this allows for teleportation in real life 😳 😅 🙃
Wave functions for four identical spin‐one‐half fermions with total spin 0 1, and 2 are constructed. Lower bounds on the ground state energies of these spin states are derived. The results are illustrated with an.
A theoretical study proposes that magnetic monopoles may appear not as elementary but as emergent particles in complex, strongly-correlated magnetic systems such as spin ice, in analogy to fractional electric charges in quantum Hall systems. This theory explains a mysterious phase transition in spin ice that has been observed experimentally.
THEOGENESIS: Transdimensional Propagation & Universal Expansion ― my new book on quantum cosmology, computational physics and posthumanism ― is about to be released by Ecstadelic Media Group on October 1 2021!
Here’s the Table of Contents: Introduction. 1. Our Post-Singularity Future: Are We Destined to Become Cybergods? 2. Transcension: Exponential Miniaturization. 3. Computational Physics: Reinterpreting Relativity. 4. Transcendental Cybernetics: The Ultimate Code of Reality. 5. Universality of Computation. 6. Quantum Gravity: Quest for the Final Theory of Everything. 7. The Shadow Multiverse: Parallel Space-Times, Dark Matter and Dark Energy. 8. Ontological Holism: All is One, One is All. 9. Why Materialism is a Flatlander Philosophy. 10. Seeking the Ultimate Truth: The Battle of Ideologies. 11. Quantum Cosmology: From the Holographic Principle to the Fractal Multiverse. 12. The Omega Singularity: Your Cosmic Self. 13. The Axioms of Divinity: Cybertheistic Foundation. 14. Experiential Matrix: A Playground of Subjectivity. 15. Transcendent Realm: Redefining God. 16. God of Spinoza: The Conscious Universe. 17. A New Kind of Pantheism: The Cybertheism Argument. 18. Are We Alone in the Universe? 19. The Chrysalis Conjecture: Our Second Womb. Conclusion. Appendix A. Tenets of The Cybernetic Theory of Mind: The Five Foundational Axioms. Glossary of Terms. Acknowledgements. About the Author. Bibliography.
A subatomic particle has been found to switch between matter and antimatter, according to Oxford physicists analyzing data from the Large Hadron Collider. It turns out that an unfathomably tiny weight difference between two particles could have saved the universe from annihilation soon after it began.
Antimatter is kind of the “evil twin” of normal matter, but it’s surprisingly similar – in fact, the only real difference is that antimatter has the opposite charge. That means that if ever a matter and antimatter particle come into contact, they will annihilate each other in a burst of energy.
To complicate things, some particles, such as photons, are actually their own antiparticles. Others have even been seen to exist as a weird mixture of both states at the same time, thanks to the quantum quirk of superposition (illustrated most famously through the thought experiment of Schrödinger’s cat.) That means that these particles actually oscillate between being matter and antimatter.
Physicists with the Harvard-MIT Center for Ultracold Atoms have just announced new success with a particular style of quantum computer —a “programmable quantum simulator”. In this architecture, they take supercold rubidium atoms and use optical tweezers (beams of light) to arrange the atoms into shapes.
This new system allows the atoms to be assembled in two-dimensional arrays of optical tweezers. This increases the achievable system size from 51 to 256 qubits. Using the tweezers, researchers can arrange the atoms in defect-free patterns and create programmable shapes like square, honeycomb, or triangular lattices to engineer different interactions between the qubits.
