Researchers Succeed in Quantum Teleportation of Light Waves Like Schrödinger's cat, teleported light is both dead and alive This is a Teleportation Device The setup Noriyuki Lee and colleagues used to teleport quantum light. Science/AAAS 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 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. In this experiment, researchers in Australia and Japan were able to transfer quantum information from one place to another without having to physically move it. It was destroyed in one place and instantly resurrected in another, “alive” again and unchanged. This is a major advance, as previous teleportation experiments were either very slow or caused some information to be lost. The team employed a mind-boggling set of quantum manipulation techniques to achieve this, including squeezing, photon subtraction, entanglement and homodyne detection. The photo above depicts their device, nicknamed the Teleporter, in the lab of Akira Furusawa at the University of Tokyo. The results pave the way for high-speed, high-fidelity transmission of information, according to Elanor Huntington, a professor at the University of New South Wales in Australia who was part of the study. “If we can do this, we can do just about any form of communication needed for any quantum technology,” she said in a news release. Instead of using ones and zeroes, quantum computers store data as qubits, which can represent one and zero simultaneously. This superposition enables the computers to solve multiple problems at once. The new, faster teleportation process means scientists can move blocks of this quantum information around within a computer or across a network, Huntington said. Optics researcher Philippe Grangier at the Institut d’Optique in Palaiseau, France, said it was a major breakthrough. “It shows that the controlled manipulation of quantum objects has progressed steadily and achieved objectives that seemed impossible just a few years ago,” he wrote in an editorial that accompanies the study. The results were published today in the journal Science. Researchers Succeed in Quantum Teleportation of Light Waves | Popular Science iPhone15 - Quantum communication!
I have just seen a 3 minute vid explaining what quantum teleportation is. ([ame=http://www.youtube.com/watch?v=_qmSdC7aQpY&playnext=1&list=PLAD1F0ADE8F457728]YouTube - "Quantum Teleportation" by Phil Magnini[/ame]). There is no transfer of particles at all. In other words, there is no real teleportation. All it means is that if you know data about 2 subatomic particles in New York, lets say X and Y, then you can phone LA, and pass on that data. In LA, cos they have that data, they can manipulate another sub atomic particle so it resembles Y exactly. Since a sub atomic particle in LA has been made to look like a subatomic particle in NY exactly, it is said to have been teleported. But that is bullshit, obviously. Cos nothing has travelled from NY to LA. I think the article above relates to a better way of sending the data rather than using a telephone. Cos the process requires someone to retrieve data from X and Y, go over to the phone call LA and pass on the data. That's time-consuming. They've probably found a way of sending the data by using the existing network which holds the 2 subatomic entangled particles.