Tag Archives | Quantum Physics

China to build global quantum communication network in 2030

jazbeck (CC by-sa 2.0)

jazbeck (CC by-sa 2.0)

via Space Daily:

China will build a global quantum communication network by 2030, said a leading Chinese quantum physicist on Sunday.

“China’s quantum information science and technology is developing very fast and China leads in some areas in this field,” said Pan Jianwei, a Chinese quantum scientist and professor at the University of Science and Technology of China.

The field of quantum communication, the science of transmitting quantum states from one place to another, grabbed global attention in recent years after the discovery of quantum cryptography, which is described as a way of creating “unbreakable” messages.

China will achieve Asia-Europe intercontinental quantum key distribution in 2020 and build a global quantum communication network in 2030, said Pan at the 2014 International Conference on Quantum Communication, Measurement and Computing,which opened Sunday in east China’s Hefei city.

Read More: http://www.spacedaily.com/reports/China_to_build_global_quantum_communication_network_in_2030_999.html

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Quantum State: It’s A Thang!

Quantum bouncerPhysicists are finally plucking up the courage to think that quantum mechanics might actually represent reality, and is not just a useful theory, suggests Chris Lee at Ars Technica:

At the very heart of quantum mechanics lies a monster waiting to consume unwary minds. This monster goes by the name The Nature of Reality™. The greatest of physicists have taken one look into its mouth, saw the size of its teeth, and were consumed. Niels Bohr denied the existence of the monster after he nonchalantly (and very quietly) exited the monster’s lair muttering “shut up and calculate.” Einstein caught a glimpse of the teeth and fainted. He was reportedly rescued by Erwin Schrödinger at great personal risk, but neither really recovered from their encounter with the beast.

The upshot is that we had a group of physicists and philosophers who didn’t believe that quantum mechanics represents reality but that it was all we could see of some deeper, more fundamental theory.

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More Evidence That Plants Get Their Energy Through Quantum Entanglement

fern plantAs top human scientists dream of someday creating a quantum computer, are we lagging far behind plants? io9 reports:

Biophysicists theorize that plants tap into the eerie world of quantum entanglement during photosynthesis. Evidence to date has been purely circumstantial, but now, scientists have discovered a feature of plants that cannot be explained by classical physics.

In a way, they’re like mini-quantum computers capable of scanning all possible options in order to choose the most efficient paths or solutions. For plants, this means the ability to make the most of the energy they receive and then deliver that energy from leaves with near perfect efficiency.

The going theory is that plants have light-gathering macromolecules in their cells that can transfer energy via molecular vibrations — vibrations that have no equivalents in classical physics.

In the new study, UCL researchers identified a specific feature in biological systems that can only be predicted by quantum physics.

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New Compelling Evidence Suggesting The Universe Is A Hologram

hologramIn existential news, Tupac isn’t the only one who may merely be a flat holographic projection. Via Nature:

A team of physicists has provided some of the clearest evidence yet that our Universe could be just one big projection.

In 1997, theoretical physicist Juan Maldacena proposed an audacious model of the Universe in which gravity arises from infinitesimally thin, vibrating strings. The mathematically intricate world of strings, which exist in nine dimensions of space plus one of time, would be merely a hologram: the real action would play out in a simpler, flatter, single dimensional cosmos where there is no gravity.

Maldacena’s idea thrilled physicists because it solved apparent inconsistencies between quantum physics and Einstein’s theory of gravity.

In two papers posted on the arXiv repository, Yoshifumi Hyakutake of Ibaraki University in Japan and his colleagues now provide, if not an actual proof, at least compelling evidence that Maldacena’s conjecture is true.

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Do We Live in the Matrix?

The.Matrix.glmatrix.2Zeeya Merali says that “tests could reveal whether we are part of a giant computer simulation — but the real question is if we want to know,” writing for Discover:

In the 1999 sci-fi film classic The Matrix, the protagonist, Neo, is stunned to see people defying the laws of physics, running up walls and vanishing suddenly. These superhuman violations of the rules of the universe are possible because, unbeknownst to him, Neo’s consciousness is embedded in the Matrix, a virtual-reality simulation created by sentient machines.

The action really begins when Neo is given a fateful choice: Take the blue pill and return to his oblivious, virtual existence, or take the red pill to learn the truth about the Matrix and find out “how deep the rabbit hole goes.”

Physicists can now offer us the same choice, the ability to test whether we live in our own virtual Matrix, by studying radiation from space.

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The Quantum Theory Of Smell

Do quantum vibrations determine how things smell? Are our noses detecting the secrets of the universe without our knowing? Via the BBC, the realm of the senses grows stranger:

A controversial theory that the way we smell involves a quantum physics effect has received a boost, following experiments with human subjects. It challenges the notion that our sense of smell depends only on the shapes of molecules we sniff in the air. Instead, it suggests that the molecules’ vibrations are responsible.

Molecules can be viewed as a collection of atoms on springs, so the atoms can move relative to one another. Energy of just the right frequency – a quantum – can cause the “springs” to vibrate, and in a 1996 paper [the theory’s creator] Dr. Lucia Turin said it was these vibrations that explained smell.

A way to test it is with two molecules of the same shape, but with different vibrations.

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Is Belief In Telepathy Unscientific?

Rigorous experiments seem to suggest that ESP and mental telepathy are real, yet these phenomena are rejected as hoaxes by mainstream science, because belief in mind reading would contradict the most basic laws of our understanding of reality. Or would it? Via Reality Sandwich, Chris Carter argues that telepathy and quantum physics go hand-in-hand:

Like Price and Hebb before them, both Wiseman and French hold that the claim of telepathy is so extraordinary that we need a greater level of evidence than we normally demand. Why should this be so? Most people believe in the reality of telepathy based on their own experiences, and are puzzled by the description of telepathy as “extraordinary.”

Psychologist James Alcock recently wrote that the claims of parapsychology “stand in defiance of the modern scientific worldview. That by itself does not mean that parapsychology is in error, but as the eminent neuropsychologist Donald Hebb pointed out, if the claims of parapsychology prove to be true, then physics and biology and neuroscience are horribly wrong in some fundamental respects.”

However, a number of leading physicists such as Henry Margenau, David Bohm, Brian Josephson, and Olivier Costra de Beauregard have repeatedly pointed out that nothing in quantum mechanics forbids psi phenomena.

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Why The Age Of Quantum Computing Is Nearer Than You Think

DPAG1998-Max-Planck-GesellschaftTrevor Quirk reports in the Christian Science Monitor that new research at the Max Planck Institute of Quantum Optics shows quantum computing beginning to flirt with practical technology:

Tech-buffs, investors, IT industrialists, and boffins alike eagerly await the day when the science of quantum computing yields practical technology. Physicists of the Max Planck Institute of Quantum Optics (MPQ), recently published research that, they believe, has brought that pivotal day closer.

For many years, physicists have sought to create an information network far superior to today’s by exploiting quantum phenomena. The team of German researchers have constructed the first vital component of such a network: a link between two atomic nodes over which information can be received, sent, and stored using a single photon. Successful exchanges of information recently took place in Garching, Germany, between two MPQ labs connected by a 60-meter fiber-optic cable. Though only a prototype, this rudimentary network could be scaled up to more complex and distanced quantum networks.

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