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|Author(s):||David Hume; Chin W. Chou; Till P. Rosenband; David J. Wineland;|
|Title:||Preparation of Dicke States in an Ion Chain|
|Published:||November 02, 2009|
|Abstract:||We have investigated theoretically and experimentally a method for preparing Dicke states in trapped atomic ions. We consider a linear chain of N ion qubits that is prepared in a particular Fock state of motion, jmi. The m phonons are removed by applying a laser pulse globally to the N qubits, and converting the motional excitation to m flipped spins. The global nature of this pulse ensures the m °ipped spins are shared by all the target ions in a state that is a close approximation to the Dicke state jD(m)N i. We calculate numerically the ¯delity limits of the protocol and ¯nd smalldeviations from the ideal state for m = 1 and m = 2. We have demonstrated the basic features of this protocol by preparing the state jD(1)2 i in two 25Mg+ target ions trapped simultaneously with an 27Al+ ancillary ion.|
|Citation:||Physical Review A (Atomic, Molecular and Optical Physics)|
|Keywords:||atomic spectroscopy,Dicke state,entanglement,laser spectroscopy,ion trap,quantum information|
|Research Areas:||Physics, Laser Physics, Quantum Information|
|PDF version:||Click here to retrieve PDF version of paper (107KB)|