NATS 1700 Chapter Notes - Chapter 4: Quantum Computing, Photon
14 Nov 2017
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Nats 1700 lecture 4 textbook notes quantum-mechanical computers . Hydrogen atoms used to store bits of information in a quantum computer. If the photons in the pulse have the same amount of energy as the difference between the electron"s ground state as well as its excited state, the electron will jump from one state to the other. Reading the bit an atom stores is done using a laser pulse having the same amount of energy as the difference between the atom"s excited state, call it e1, and an even higher, less stable state, e2. If the atom is in its ground state, representing a 0, this pulse has no effect. The atom will then return to e1, emitting a telltale photon. Circuits contain wires/transistors only one hundredth of a human hair in width.
