Experimental realization of programmable quantum gate array for directly probing commutation relations of Pauli operators.
We experimentally demonstrate an advanced linear-optical programmable quantum processor that combines two elementary single-qubit programmable quantum gates. We show that this scheme enables direct experimental probing of quantum commutation relations for Pauli operators acting on polarization states of single photons. Depending on a state of two-qubit program register, we can probe either commutation or anticommutation relations. Very good agreement between theory and experiment is observed, indicating high-quality performance of the implemented quantum processor.
Yao
Xing-Can
XC
Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
Fiurásek
Jaromír
J
Lu
He
H
Gao
Wei-Bo
WB
Chen
Yu-Ao
YA
Chen
Zeng-Bing
ZB
Pan
Jian-Wei
JW