Bootstrap tomography of the pulses for quantum control.
Long-time dynamical decoupling and quantum control of qubits require high-precision control pulses. Full characterization (quantum tomography) of imperfect pulses presents a bootstrap problem: tomography requires initial states of a qubit which cannot be prepared without perfect pulses. We present a protocol for pulse error analysis, specifically tailored for a wide range of the single solid-state electron spins. Using a single electron spin of a nitrogen-vacancy center in diamond, we experimentally verify the correctness of the protocol, and demonstrate its usefulness for quantum control tasks.
Dobrovitski
V V
VV
Ames Laboratory, U.S. DOE, Iowa State University, Ames Iowa 50011, USA.
de Lange
G
G
Ristè
D
D
Hanson
R
R