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updated: 3/20/2008 |
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Barium isotope 137
has nuclear spin 3/2, which gives rise to hyperfine interaction and
ground state splitting of about 8 GHz. Hyperfine states with there
effectively infinite lifetime and long coherence are excellent
candidates for quantum information storage and processing. We are
working on developing a robust scheme for 137Ba+
qubit detection.
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While it is
convenient to store quantum information in hyperfine states of trapped
ions, sending this information over any distance longer than a
millimeter is best done by using photons. We are studying coherent
coupling between quantum states of the trapped ions and single photons.
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Short, high-intensity
laser pulses can be used to drive fast quantum logic gates between
trapped ions. A high degree of control over the pulses properties is
necessary for high-fidelity gates. |
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