Journal
PHYSICAL REVIEW LETTERS
Volume 109, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.070502
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Funding
- National Natural Science Foundation of China [10834005, 91021005, 11161160553]
- Instrument Developing Project of the Chinese Academy of Sciences [Y2010025]
- National Fundamental Research Program
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In order to achieve reliable quantum-information processing results, we need to protect quantum gates along with the qubits from decoherence. Here we demonstrate experimentally on a nitrogen-vacancy system that by using a continuous-wave dynamical decoupling method, we might not only prolong the coherence time by about 20 times but also protect the quantum gates for the duration of the controlling time. This protocol shares the merits of retaining the superiority of prolonging the coherence time and at the same time easily combining with quantum logic tasks. This method can be useful in tasks where the duration of quantum controlling exceeds far beyond the dephasing time.
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