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High fidelity quantum control over qubits is of crucial importance forrealistic quantum computing, and it turns to be more challenging when there areinevitable interactions among qubits. By employing a bandselective shapedpulse, we demonstrate a high fidelity flip over electron spin ofnitrogen-vacancy (NV) centers in diamond. In contrast with traditionalrectangular pulses, the shaped pulse has almost equal excitation effect among asharply edged region (in frequency domain). So the three sub-levels of host$^{14}N$ nuclear spin can be flipped accurately at the same time, while theredundant flip of other sublevels (e. g. of a nearby $^{13}C$ nuclear spin ) iswell suppressed. The shaped pulse can be applied to a large amount of quantumsystems in which band-selective operation are required.

Band-selective shaped pulse for high fidelity quantum control in diamond