



@article {1515,
	title = {Demonstration of Robust Quantum Gate Tomography via Randomized  Benchmarking},
	journal = {New Journal of Physics},
	volume = {17},
	year = {2015},
	month = {2015/11/05},
	pages = {113019},
	abstract = {  Typical quantum gate tomography protocols struggle with a self-consistency
problem: the gate operation cannot be reconstructed without knowledge of the
initial state and final measurement, but such knowledge cannot be obtained
without well-characterized gates. A recently proposed technique, known as
randomized benchmarking tomography (RBT), sidesteps this self-consistency
problem by designing experiments to be insensitive to preparation and
measurement imperfections. We implement this proposal in a superconducting
qubit system, using a number of experimental improvements including
implementing each of the elements of the Clifford group in single {\textquoteleft}atomic{\textquoteright}
pulses and custom control hardware to enable large overhead protocols. We show
a robust reconstruction of several single-qubit quantum gates, including a
unitary outside the Clifford group. We demonstrate that RBT yields physical
gate reconstructions that are consistent with fidelities obtained by randomized
benchmarking.
},
	doi = {10.1088/1367-2630/17/11/113019},
	url = {http://arxiv.org/abs/1505.06686},
	author = {Blake R. Johnson and Marcus P. da Silva and Colm A. Ryan and Shelby Kimmel and Jerry M. Chow and Thomas A. Ohki}
}
