Hume, D.
, Chou, C.
, Rosenband, T.
and Wineland, D.
(2009),
Preparation of Dicke States in an Ion Chain, Physical Review A (Atomic, Molecular and Optical Physics), [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=903578
(Accessed November 21, 2024)
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Preparation of Dicke States in an Ion Chain
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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
Pub Type
Journals
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Keywords
atomic spectroscopy, Dicke state, entanglement, laser spectroscopy, ion trap, quantum information
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Created November 2, 2009, Updated February 19, 2017