Long-Lived Qubit Memory Using Atomic Ions
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- 2 August 2005
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 95 (6) , 060502
Abstract
We demonstrate experimentally a robust quantum memory using a magnetic-field-independent hyperfine transition in atomic ion qubits at a magnetic field . We observe that the single physical qubit memory coherence time is greater than 10 s, an improvement of approximately 5 orders of magnitude from previous experiments with . We also observe long coherence times of decoherence-free subspace logical qubits comprising two entangled physical qubits and discuss the merits of each type of qubit.Keywords
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