| 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) |
| Volume: |
80 |
| Pages: |
5 pp. |
| 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 (104KB) |
