Google announced Monday that it is making available an open-source library for quantum machine-learning applications.
TensorFlow Quantum, a free library of applications, is an add-on to the widely-used TensorFlow toolkit, which has helped to bring the world of machine learning to developers across the globe.
“We hope this framework provides the necessary tools for the quantum computing and machine learning research communities to explore models of both natural and artificial quantum systems, and ultimately discover new quantum algorithms which could potentially yield a quantum advantage,” a report posted by members of Google’s X unit on the AI Blog states.
Subjects: consciousness, psychedelics, panpsychism, transhumanism, abolishing suffering, death and immortality.
My guest today is David Pearce, a well known philosopher and transhumanist, yet his views about consciousness set him apart from other transhumanists you might be familiar with. David believes that the nature of consciousness goes much deeper than can be explained through classical physics or from within a materialist paradigm. He suspects that consciousness may reflect an intrinsic feature of reality. Whether or not this is the case, David is confident that the unity of consciousness is facilitated by a quantum unity occurring in the brain. As a result, David is skeptical about the possibility of classical computation-based “mind uploading” or truly conscious artificial intelligences arriving in the foreseeable future. But while our descendents will continue to be biological, they will however be dramatically different to us, not only with their indefinite lifespan, physical fortitude, and resilience to disease, but most significantly, in the structure of their minds. According to David, our great grandchildren will inhabit profoundly blissful mind spaces which exist exclusively “above hedonic zero”. They will have abandoned retributive emotions such as jealousy and anger, and their ordinary conscious states will be comparable to today’s peak experiences. Most significantly for David, our descendants will set their sites on abolishing suffering in all sentient life on this planet, and finally, the entire reachable universe.
We discussed these subjects and more in our conversation. Whether or not you find David’s vision hard to believe, this will be an interesting episode! If you value these conversations, please consider supporting Waking Cosmos on Patreon. https://www.patreon.com/wakingcosmos
A happy accident in the laboratory has led to a breakthrough discovery that not only solved a problem that stood for more than half a century, but has major implications for the development of quantum computers and sensors. In a study published today in Nature, a team of engineers at UNSW Sydney has done what a celebrated scientist first suggested in 1961 was possible, but has eluded everyone since: controlling the nucleus of a single atom using only electric fields.
“This discovery means that we now have a pathway to build quantum computers using single-atom spins without the need for any oscillating magnetic field for their operation,” says UNSW’s Scientia Professor of Quantum Engineering Andrea Morello. “Moreover, we can use these nuclei as exquisitely precise sensors of electric and magnetic fields, or to answer fundamental questions in quantum science.”
That a nuclear spin can be controlled with electric, instead of magnetic fields, has far-reaching consequences. Generating magnetic fields requires large coils and high currents, while the laws of physics dictate that it is difficult to confine magnetic fields to very small spaces—they tend to have a wide area of influence. Electric fields, on the other hand, can be produced at the tip of a tiny electrode, and they fall off very sharply away from the tip. This will make control of individual atoms placed in nanoelectronic devices much easier.
Collisions between beams of gravitons could convert the hypothesized particles into photons, producing a potentially detectable radio signal that would accompany some gravitational waves.
If gravity and quantum mechanics are to be unified, gravitational waves—usually studied as a classical phenomenon using general relativity—must comprise hypothesized particles called gravitons. In theory, gravitons can interact with each other to produce photons, but these interactions were thought to be vanishingly rare and impossible to detect. In new theoretical work, Raymond Sawyer of the University of California, Santa Barbara, finds that in certain cases, colliding gravitational waves could produce enough radio frequency photons to yield a detectable signal.
An atomically thin materials platform developed by Penn State researchers in conjunction with Lawrence Berkeley National Lab and Oak Ridge National Lab will open a wide range of new applications in biomolecular sensing, quantum phenomena, catalysis and nonlinear optics.
“We have leveraged our understanding of a special type of graphene, dubbed epitaxial graphene, to stabilize unique forms of atomically thin metals,” said Natalie Briggs, a doctoral candidate and co-lead author on a paper in the journal Nature Materials. “Interestingly, these atomically thin metals stabilize in structures that are completely different from their bulk versions, and thus have very interesting properties compared to what is expected in bulk metals.”
Traditionally, when metals are exposed to air they rapidly begin to oxidize—rust. In as short as one second, metal surfaces can form a rust layer that would destroy the metallic properties. In the case of a 2-D metal, this would be the entire layer. If you were to combine a metal with other 2-D materials via traditional synthesis processes, the chemical reactions during synthesis would ruin the properties of both the metal and layered material. To avoid these reactions, the team exploited a method that automatically caps the 2-D metal with a single layer of graphene while creating the 2-D metal.
In the 1970s, physicists uncovered a potential symmetry that united all the kinds of particles in our universe. This connection, known as supersymmetry, relies on the strange quantum property of spin, and could help unlock a new understanding of physics.
A recent experiment shows how quantum mechanics can make heat flow from a cold body to a hot one, an apparent (though not real) violation of the second law of thermodynamics.
Quantum computing isn’t yet far enough along that it could have helped curb the spread of this coronavirus outbreak. But this emerging field of computing will almost certainly help scientists and researchers confront future crises.
“Can we compress the rate at which we discover, for example, a treatment or an approach to this?” asks Dario Gil, the director of IBM Research. “The goal is to do everything that we are doing today in terms of discovery of materials, chemistry, things like that, (in) factors of 10 times better, 100 times better,”
