Ep 178: Its, Bits, Qubits *Part 2*
ToKCast
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Quantum Computers and Ion Traps
In an ion trap a group of ions is held in place by an ingeniously shaped oscillating electric field. In each ion one electron forms a two-state system, the state being its ground state and one of its excited states which constitutes a qubit. The ions interact with each other via a combination of the Coulomb force and an external electromagnetic field to perform arbitrary computations. Because of the generic universality of quantum gates there is bound to exist some sequence of laser pulses each pulse constituting a gate that will cause an n ion trap to perform any desired n-cubit quantum computation.
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