What is quantum communication?
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In quantum communication, the information to be transmitted is encoded on individual\nphotons that are sent either in free space or through low loss optical fibres. Of special interest\nin quantum communication are light beams where twin- and multiple photons become\nentangled (correlated more strongly than permitted by pure classical effects) in such a way\nthat any measurement one on photon in one beam immediately, irrespective of distance,\naffects the possible outcomes of measurements on other photon(s) in the other beam(s). It is\nlike having a pair of dice, miraculously prepared in such a way that whenever one of the two\nshows a certain number, its twin partner will always show the same number, even if one is in\nMonte Carlo and the second in Las Vegas. "Spooky action at a distance" was the phrase\nAlbert Einstein used to describe the quantum mechanical correlation in entangled beams.\nSuch special light beams (in physics language - quantum states) can be generated using nonlinear\noptical effects when intense laser pulses hit special crystals. In IST-QuComm,\nentangled twin-photons, or even triple- or quadruple-entangled photons has been used for\nquantum cryptography and to teleport quantum states. The latter process refers to\ntransferring the full information content of a quantum state from one place to the other\nwithout sending the state itself. It should be stressed that two particles in the same quantum\nstate are identical; they are indistinguishable even in principle. Thus if we transfer the\nquantum state from one particle to another we have indeed transferred-"teleported" the\nparticle itself. The requirement of quantum mechanics in the process is that the "identity"-the\nquantum state of the original particle is destroyed in the teleportation process. Besides being\nof fundamental interest, quantum teleportation may also play a role in quantum computation,\nand could also be a way to transfer quantum information between separated quantum\n"processors".
512226
If there is a quantum for time, it must be on the order of 10 to the minus fortieth power seconds, the time required for the smallest particle interaction between two particles that are separated by the theoretical diameter of the smaller of the two-- in other words, they are already nearly touching. Nothing shorter than that could be measured. Whether time is quantized, that is, whether it goes in discrete steps, multiples of the above unit, we do not yet know.
226579
Man there's all kinds of nonverbal communiation.\nBody language, etc.\nbut\nI feel you're wondering about cooler stuff like psychic powers and whatnot...\nPhysically, it all seems possible to me;  One can spends hours, days, weeks researching QM, and a mild conceptual understanding of the amazing subatomic world that makes up our physical reality can really leave one with lots of questions and interesting conclusions...\nWe're built of all those amazing little atoms too.\nThey say we can't really dabble in the world of the quantum mostly because we can't measure it without changing it.\nScience just can't make sensitive enough machines...\nIt took several million years, but we may each have grown an instrument powerful and sensitive enough to muck around in the quantum world.\nI'm talking about the brain, of course.\nPerfect instrument\nno eyepieces, screens, readouts,\nit's wired directly to our perception
416146
yes in the quantum world. hey and if no one reads this answer have i really typed it??
1047147
hmmm... \n\nWell the book that got me turned on to physics was "The source book on atomic energy"\n\nThis book starts off at newton and goes up to the nuclear reactors and basicly every thing that was known about nuclear technoolgy at the time (the book is about 50 years old).  It is not quantum mechanics, but it is modern physics.  And modern physics is the start to quantum.  It will give you ALL the backround that you need to know to start to really learn quantum. Also it is very easy to read (I read it the summer after my freshman year in college)  \n\nanother serise of book (also not quite to hard quantum yet) are the "Mr Tompkins" series.  he describes things like the atom and relitivity very well and in a hands on approch.  \n\n\nNow for quantum... I did read one decent book, but i can not remeber what it was.  Just go to your local library and do a search for quantum mechanics and pick up the shortest paper back you can find.  they are all written by very smart people and they are writen so that every on can under stand them.  \n\nI am sorry I did not help to much with a Quantum book, but the other two books that I recomended are very good and will put you directely on the right path towards understanding modern physics,  and you can not understand quantum with out understanding modern (actualy there is usualy a bit of quantum is modern physics classes)
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Only on a limited basis, though, I think you'll find a better explanation then I could give you at Anton Zeilinger's site:\nhttp://www.quantum.at/zeilinger/\nHe even includes a PDF version, from the April 2000 issue, of the cover and article in Scientific American here:\nhttp://www.quantum.univie.ac.at/links/sci_am/teleportation.pdf\n\nLet me know if this helps.
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Planck's Constant is a central feature of quantum mechanics, and the study of quantum mechanics has led to such practical applications as laser technology,transistor technology,the electron microscope, magnetic resonance imaging (diagnostic medicine), and countless applications in chemistry research.
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Quite frankly I find it fascinating.  I haven't had the opportunity to study up as much as I'd like on the new ideas coming forth, but I would like to suggest a movie to you; it's called "What the *bleep* do we know?".  There are many credited scientists and mathematicians and other experts in their fields who discuss quantum mechanics in a way that your everyday Joe can understand.  Although a good chunk of it shows how the ideas relate back to the body/self.  Some of these ideas are portrayed in a "story" about a deaf photographer--which is an excellent idea, considering much of quantum mechanics deals with the idea of an "ultimate observer".   One warning, though; the movie does, at one point, all but mathematically dispel the notion of "God"...\n\nHope you like it!
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Quantum Physics The Science is us we they me I you and our perception and control over our reality here on earth.Using our minds the way it shoulb be hopefully we will be able to see all the connections.We will I am thinking about it right now.
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Mit has open courseware on their website.  They've been videotaping the classes, but they don't have this for the quantum physics classes yet.  If you just want basic information, then you can check out some of the other physics.
849239
my favorite is quantum physics, it explains so much about the way our universe works right down to the atomic level
151264
Man, communication is the transmission of signals, from an emitter to a receiver through a channel. That's the same simple plan in any point of view...
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It's still debatable whether teleportation of people will ever be possible, but if it is,  the "No-Cloning Theorem" of quantum mechanics will ensure that you will not be left with an identical copy when you are teleported.\n\nCurrently it is possible to teleport quantum states between a trasmitter and a receiver.  Research groups at numerous places including IBM and MIT have teleported quantum states such as the polarization on a photon, or the spin on a particle.  However it is not possible to clone a quantum state.  When you perform the teleportation, it destroys the quantum state at the transmitter and produces it at the receiver.\n\nAn issue of Scientific American in 1999 published an article with a proposal on how to go about building a teleportation device for humans, based on quantum teleportation.  It involves having enough matter at the receiver to recreate the person, then using quantum teleportation to transmit all the quantum states that make up the person to the receiver.  However, when this is done, the process of teleporting the quantum states to the receiver destroys the person at the transmitter.
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Little quarks, of sub-atomic size, running around making other quantum size headachs for scientists and mathematicians.\n\nActually, Quantum mechanics is a fundamental branch of theoretical physics that replaces Newtonian mechanics and classical electromagnetism at the atomic and subatomic levels. It is the underlying framework of many fields of physics and chemistry, including condensed matter physics, quantum chemistry, and particle physics. Along with general relativity, it is one of the pillars of modern physics.
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Quantum mechanics is a fundamental physical theory that replaces Newtonian mechanics and classical electromagnetism at the atomic and subatomic levels and is the underlying framework of many fields of physics and chemistry, including condensed matter physics, quantum chemistry, and particle physics. Often, it is the answer to questions when general relativity fails.
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It can be "explained" with quantum mechanics. If you can find the movies of the lectures given by Richard Feynmen in New Zealand, there are 4 lectures if I am correct, In the first lecture he explains it very well in Laymans terms.\n\nIt takes a fair bit of explanation so I won't attemp to relate it here.
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Quantum\n- a discrete amount of something that is analogous to the quantum in quantum theory\n- (physics) the smallest discrete quantity of some physical property that a system can possess (according to quantum theory)