Entanglement and tunable spin-spin couplings between trapped ions using multiple transverse modes.
We demonstrate tunable spin-spin couplings between trapped atomic ions, mediated by laser forces on multiple transverse collective modes of motion. A sigma_{x}sigma_{x}-type Ising interaction is realized between quantum bits stored in the ground hyperfine clock states of ;{171}Yb;{+} ions. We demonstrate entangling gates and tailor the spin-spin couplings with two and three trapped ions. The use of closely spaced transverse modes provides a new class of interactions relevant to quantum computing and simulation with large collections of ions in a single crystal.
Joint Quantum Institute: Department of Physics, University of Maryland, and National Institute of Standards and Technology, College Park, Maryland 20742, USA.
K
K
Kim
M-S
MS
Chang
R
R
Islam
S
S
Korenblit
L-M
LM
Duan
C
C
Monroe