Two entangled systems mean that they are correlated with each other (when one changes, so does the other), and no third party will share this correlation. However, this process suffers from the risk of a third-party learning information about the keys and being able to intercept and compromise the cryptography.Ĭreating a secure channel is the key to unbreakable cryptography between two parties. In traditional cryptography, the sender uses one key to encode, and the recipient uses the shared key to decode the message. Quantum entanglement is a phenomenon that can potentially aid such computers, cutting down on time and computing power needed to process information transfer between their qubits. Entanglement can enable quantum cryptography, superdense coding, maybe faster than light speed communication, and even teleportation.īecause of its potential, multiple industries, including finance and banking, hope to solve time and processing power-consuming problems with quantum computers. Several applications can take advantage of this unique physical property that will change our present and future. So the information does move this quickly, but we cannot control it this lack of control does limit the potential uses for Quantum Entanglement, such as sending a message or other info faster than light speed (or does it?). Instead, only when one measures the information of one particle is that information then transmitted to the other particle, and this is faster than the speed of light. Through testing, scientists have found that the information is not determined from the time of entanglement. If the two daughter particles don’t interact with anything, they will keep their wave function (when measured) equal and opposite no matter how far apart they are. One way that entanglement can be accomplished by letting a parent particle, with zero spin, decay into the two entangled daughter particles with equal but opposite spin. Two subatomic particles (the electrons) can be prepared in a way that can describe them with a single wave function. However, research and testing starting in the 1980s have validated entanglement using both photons and electrons. This phenomenon had baffled scientists like Einstein because the state is not determined until it is measured and the transmission of information violates the traditional physics’ rule, which says that information cannot be transferred faster than the speed of light. The “immediate” and “no matter how far apart they are” is a big deal. Quantum Entanglement is a state where two systems (a system is usually an electron or photon) are so strongly correlated that the obtaining of information about one system’s “state” (the direction of the electron’s spin say “Up”) will give immediate information about the other system’s “state” (the second electron’s spin is in the opposite direction “Down” 100% of the time) no matter how far apart these systems are. This can be thought of like a pile, the grains of sand that make up that pile, and the silicon atoms that make up the sand they are the same thing and different. Newtonian physics works till a point, then another set of rules like, Einstein’s relativity and even deeper Quantum Mechanics take over. We will explain these basics and then introduce you to some current and future applications. For those who struggled through a physics class or never studied it in the first place, Quantum Entanglement may seem completely foreign however, the basics are not too hard to understand.
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