Quantum Entanglement Theory

2814 Words12 Pages

One of the theories involved in the production of quantum computers is quantum entanglement. Quantum entanglement is a type of physical resource similar to a kind of energy which is related to the peculiar nonclassical correlations that are probably among separated quantum systems. Quantum entanglement is so strange that Albert Einstein call this quantum entanglement as “spooky action at a distance”. Quantum entanglement basically involves two electron that had been in connection with each other at infinite distance.
It shows that when two objects are entangle with one another, they share peculiar connections. For example, if we placed a pair of entangled molecules in two different places, such as one on earth and another one on the moon, they …show more content…

By using Shor algorithm, a classical computer with 2.2 GHz require 30 years to complete the calculation of 193 digits. However, by using a quantum computer with the same clock speed, it just require 0.1 second to complete 193 digits calculation. As current computers today can only work by manipulating bits that exist in two states, that is a 0 or a 1, quantum computers are very much different. Quantum computers are not limited to only to states; they encode information as quantum bits, or qubits which can exist in superposition. Qubits represent atoms, ions, photons or electrons and their respective control devices that are working together to act as the computer memory and processor. (Bonsor and Strickland, 2014) The simplest description of the basic objects to be manipulated by a quantum computer of word length n is complex superpositions of bit strings of length n. Since a bit string is a sequence of numbers and the coefficients of the superpositions can also be some of these numbers we will use the kept notation for the bit strings as pure …show more content…

Entanglement between our quantum computer and its environment will drive the process of decoherence. The way to fight off that entanglement is to use entanglement to our advantage, to store information in a highly entangled state. Scientist studying how the way of decoherence come about and the way to prevent it happens to help in designing a quantum computer. Decoherence in qubits systems falls into two general categories, one of the general categories is an intrinsic decoherence will caused by constituents in the qubit system. Another general categories is the imperfections of the system will cause extrinsic decoherence. (Robert P. 2011)
A team of physicists in Israel used scattering of a photon when it strikes an atom for a better understanding of the process of decoherence. In this experiment, the researchers found that when a photons struck an atoms, both photons and atoms are deflected, this was the process called scattering. In fact, they discovered that the photon and atom became entangled, when the photon struck an atom that was spinning not aligned in the same direction as its path. The researchers found that the entanglement did not occur if the atom and photon spin were

Open Document