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quant-ph2011★ 66 cited
Quantum coherence between two atoms beyond Q=10^15
C. W. Chou, D. B. Hume, M. J. Thorpe +2
We place two atoms in quantum superposition states and observe coherent phase evolution for 3.4x10^15 cycles. Correlation signals from the two atoms yield information about their r…
quant-ph2009★ 80 cited
Preparation of Dicke States in an Ion Chain
D. B. Hume, C. W. Chou, T. Rosenband +1
We have investigated theoretically and experimentally a method for preparing Dicke states in trapped atomic ions. We consider a linear chain of ion qubits that is prepared in a…