Demonstration of a neutral atom controlled-NOT quantum gate.
We present the first demonstration of a CNOT gate between two individually addressed neutral atoms. Our implementation of the CNOT uses Rydberg blockade interactions between neutral atoms held in optical traps separated by >8 microm. Using two different gate protocols we measure CNOT fidelities of F=0.73 and 0.72 based on truth table probabilities. The gate was used to generate Bell states with fidelity F=0.48+/-0.06. After correcting for atom loss we obtain an a posteriori entanglement fidelity of F=0.58.
Isenhower
L
L
Department of Physics, University of Wisconsin, 1150 University Avenue, Madison, Wisconsin 53706 USA.
Urban
E
E
Zhang
X L
XL
Gill
A T
AT
Henage
T
T
Johnson
T A
TA
Walker
T G
TG
Saffman
M
M