A Lazy Layman's Guide to Quantum Physics. That's an easy one: it's the science of things so small that the quantum nature of reality has an effect.
Quantum means 'discrete amount' or 'portion'. Max Planck discovered in 1900 that you couldn't get smaller than a certain minimum amount of anything. This minimum amount is now called the Planck unit. Quantum Day. Quantum tunnelling. Quantum tunnelling or tunneling (see spelling differences) refers to the quantum mechanical phenomenon where a particle tunnels through a barrier that it classically could not surmount.
This plays an essential role in several physical phenomena, such as the nuclear fusion that occurs in main sequence stars like the Sun. It has important applications to modern devices such as the tunnel diode, quantum computing, and the scanning tunnelling microscope. The effect was predicted in the early 20th century and its acceptance as a general physical phenomenon came mid-century. Tunnelling is often explained using the Heisenberg uncertainty principle and the wave–particle duality of matter. Pure quantum mechanical concepts are central to the phenomenon, so quantum tunnelling is one of the novel implications of quantum mechanics.
History After attending a seminar by Gamow, Max Born recognised the generality of tunnelling. Introduction to the concept The tunnelling problem Scientists squeeze light past quantum limit › News in Science (ABC Science) News in Science Monday, 12 September 2011 Stuart GaryABC Tiny ripples The race to discover gravity waves may be getting closer to the finish line with scientists successfully squeezing light using quantum mechanics.
'Uncrackable' codes set for step up. 4 September 2013Last updated at 13:09 ET By Melissa Hogenboom Science reporter, BBC News.
Controversial quantum computer aces entanglement tests - physics-math - 08 March 2013. Read full article Continue reading page |1|2 Editorial: "Quantum computers leap into the real world"
How To Make a Quantum Bit. Researchers discover quantum algorithm that could improve stealth fighter design. (Phys.org) —Researchers at the Johns Hopkins University Applied Physics Laboratory (APL) have devised a quantum algorithm for solving big linear systems of equations.
Furthermore, they say the algorithm could be used to calculate complex measurements such as radar cross sections, an ability integral to the development of radar stealth technology, among many other applications. Their research is reported in the June 18 issue of Physical Review Letters. The field of quantum computing is still relatively young.
First proposed in the 1980s, a quantum computer harnesses the principles of quantum mechanics (the physics of very small things like electrons and photons) to process information significantly faster than traditional computers. A classical computer has a memory made up of bits (units of information), where each bit represents either a one or a zero. While several few-qubit systems have been built, a full-scale quantum computer is still years away. Researchers find a way to keep quantum memory and logic in synch - Zeroth - 0th. A quantum computer, like any other computer, requires a way to store and retrieve information.
In other words, some sort of memory. But because of the rich quantum entanglement gooey center of quantum computing, the memory and the logic need to be linked in a manner that’s very different from that in classical computing: the magic of entanglement. Physicists have been crowing about how they can create entangled states for a while now. Unfortunately, quantum computing requires something more: a memory state should last for a long time, independently of the logic parts, while the logic part should be accessible and fast. This makes coupling these two elements together in a useful way difficult… until now, that is. Possibility of cloning quantum information from the past. Popular television shows such as "Doctor Who" have brought the idea of time travel into the vernacular of popular culture.
But problem of time travel is even more complicated than one might think. LSU's Mark Wilde has shown that it would theoretically be possible for time travelers to copy quantum data from the past. It all started when David Deutsch, a pioneer of quantum computing and a physicist at Oxford, came up with a simplified model of time travel to deal with the paradoxes that would occur if one could travel back in time. For example, would it be possible to travel back in time to kill one's grandfather? In the Grandfather paradox, a time traveler faces the problem that if he kills his grandfather back in time, then he himself is never born, and consequently is unable to travel through time to kill his grandfather, and so on.
"The question is, how would you have existed in the first place to go back in time and kill your grandfather? " This Is the Most Complex Integrated Quantum Circuit Ever Made. Researchers Succeed in Quantum Teleportation of Light Waves. In a real-life use of Schrödinger's theoretical paradoxical cat, researchers report that they were able to quickly transfer a complex set of quantum information while preserving its integrity.
The information, in the form of light, was manipulated in such a way that it existed in two states at the same time, and it was destroyed in one spot and recreated in another. The new teleportation breakthrough is a major step toward building safe, effective quantum computers. No felines were harmed in the making of this experiment, which actually studied wave packets of light that existed in a state of quantum superposition, meaning they existed in two different phases simultaneously. This phenomenon is described in Erwin Schrodinger's quantum mechanics thought experiment, in which a cat is simultaneously dead and alive, depending on the state of a subatomic particle.
Scientists Achieve Quantum Teleportation. One of the hurdles to teleportation has been overcome, with the reliable movement of quantum information between two objects separated by a short distance.
The achievement is still a very, very long way from the movements familiar from science fiction, but strengthens our confidence in the theory of quantum entanglement, one of the most controversial aspects of modern physics. It may, moreover, assist the much closer goal of quantum computing. Certain subatomic particles always exist in paired states. For example, two electrons may have opposite spins. This is fine initially, but creates a famous paradox if one particle is interfered with in such a way that its spin is changed. Quantum teleportation. Quantum teleportation is a process by which quantum information (e.g. the exact state of an atom or photon) can be transmitted (exactly, in principle) from one location to another, with the help of classical communication and previously shared quantum entanglement between the sending and receiving location.
Because it depends on classical communication, which can proceed no faster than the speed of light, it cannot be used for superluminal transport or communication of classical bits. It also cannot be used to make copies of a system, as this violates the no-cloning theorem. Although the name is inspired by the teleportation commonly used in fiction, current technology provides no possibility of anything resembling the fictional form of teleportation. While it is possible to teleport one or more qubits of information between two (entangled) atoms, this has not yet been achieved between molecules or anything larger. Non-technical summary Protocol and. Golden Ratio Discovered in the Quantum World. By Rakefet TavorEpoch Times Staff Created: January 19, 2010 Last Updated: June 17, 2012 PICTURING THE GOLDEN RATIO: Scientists fired neutrons at cobalt niobate particles, finding resonant notes with the golden ratio.
(Tennant/HZB) The “golden ratio,” which is equal to approximately 1.618, can be found in various aspects of our life, including biology, architecture, and the arts. But only recently was it discovered that this special ratio is also reflected in nanoscale, thanks to researchers from the U.K.’s Oxford University, University of Bristol, and Rutherford Appleton Laboratory, and Germany’s Helmholtz-Zentrum Berlin for Materials and Energy (HZB). Their research, published in the journal Science on Jan. 8, examined chains of linked magnetic cobalt niobate (CoNb2O6) particles only one particle wide to investigate the Heisenberg Uncertainty Principle. Quantum ether. Inquiring Minds - Questions About Physics. Concept of ether in explaining forces You asked: Will there be any research carried out in the near or distant future to find a physical relationship between gravity, mass, light, matter/antimatter through something like the idea of ether hundred years ago?
Quantum. A photon is a single quantum of light, and is referred to as a "light quantum". The energy of an electron bound to an atom is quantized, which results in the stability of atoms, and hence of matter in general. As incorporated into the theory of quantum mechanics, this is regarded by physicists as part of the fundamental framework for understanding and describing nature at the smallest length-scales. Etymology and discovery The word "quantum" comes from the Latin "quantus", for "how much". "Quanta", short for "quanta of electricity" (electrons) was used in a 1902 article on the photoelectric effect by Philipp Lenard, who credited Hermann von Helmholtz for using the word in the area of electricity.
Beyond electromagnetic radiation See also Introduction to quantum mechanics. This article is a non-technical introduction to the subject. For the main encyclopedia article, see Quantum mechanics. In this sense, the word quantum means the minimum amount of any physical entity involved in an interaction. Certain characteristics of matter can take only discrete values. Some aspects of quantum mechanics can seem counterintuitive or even paradoxical, because they describe behaviour quite different from that seen at larger length scales.
Quantum Mechanics. Quantum Stealth; The Invisible Military Becomes A Reality. Quantum Mechanics - unread. Quantum mysteries. John Gribbin For seventy years, physicists have worried about what quantum mechanics means. They can use quantum physics, to be sure; witness the successful designs of lasers and computer microchips, and the understanding of molecules that makes genetic engineering possible. Celestial/Atmospheric. Quantum. Quantum. QUANTUM PHYSICS. Quantum Physics. Astro & quantum physics.
Quantum - String Theory. QUANTUM JUMPING. Quantum Jumping. TESLA Series Technologies. The all new TESLA Series cables combine three revolutionary technologies based on the work of Nikola Tesla – the Tesla Tricon cable geometry, Zero Capacitance Active Shielding, and a proprietary Patent Pending conditioning process in a new line of cables that are smaller and more flexible than our previous models with significantly higher performance and value. TESLA Cables allow you to hear deeper into recordings with detail that’s transparent and non-fatiguing. In fact starting at the Accelerator interconnect and speaker cable level, TESLA Cables outperform every cable we have ever pitted them against regardless of price. These extraordinary cables represent a new benchmark by which all other cables can be measured and they do this with seemingly opposite strengths. Researchers Teleport 10,000 Bits of Information in 1 Second. For the first time, researchers have teleported 10,000 bits of information per second from point A to point B across a distance of about six millimeters and inside a solid state circuit, similar to a computer chip.
Although the accomplishment differs from teleporting mass, like a person — such as that seen on science fiction shows like Star Trek — the remarkable feat demonstrates what could be possible with a quantum computer. The scientists, from the Swiss Federal Institute of Technology (ETH) in Zurich, report their findings in this week’s issue of Nature. In their experiment, the team spaced three micron-sized electronic circuits on a seven-by-seven-millimeter computer chip. Quantum teleportation success. Physicists Discover the Secret of Quantum Remote Control. The Spooky World Of Quantum Biology.
Physics of life: The dawn of quantum biology.
ETH zurich achieves teleportation with quantum physics. Sep 13, 2013. Quantum Teleportation. Conscience quantique ? Quantum mechanics/physics/theory. Quantum. Consciousness & quantum physics ~ Reality is an illusion. Quantum mechanics. Lectures. New principle may help explain why nature is quantum. Like small children, scientists are always asking the question 'why? '. One question they've yet to answer is why nature picked quantum physics, in all its weird glory, as a sensible way to behave. The Official String Theory Web Site. What is quantum entanglement. Real-Time Imaging of Quantum Entanglement. Quantum Entanglement Could Stretch Across Time.
In the weird world of quantum physics, two linked particles can share a single fate, even when they’re miles apart. Now, two physicists have mathematically described how this spooky effect, called entanglement, could also bind particles across time. 'Time Crystals' Could Upend Physicists' Theory of Time. Quantum theory takes out singularity, suggests black holes are wormholes. 7 Totally Unexpected Outcomes That Could Follow the Singularity. One weird theory could make anti-gravity and faster-than-light travel possible. How white holes (might) be created.
Singularity rings? Interstellar gas allows chemical reactions caused by quantum tunneling.