3 research outputs found
Phonon-mediated spin-spin interactions between trapped Rydberg atoms
We theoretically investigate the possibility of creating phonon-mediated
spin-spin interactions between neutral atoms trapped in optical tweezers. By
laser coupling the atoms to Rydberg states, collective modes of motion appear.
We show that these can be used to mediate effective spin-spin interactions or
quantum logic gates between the atoms in analogy to schemes employed in trapped
ions. In particular, we employ Rydberg dressing in a novel scheme to induce the
needed interaction, and we show that it is possible to replicate the working of
the M{\o}lmer-S{\o}rensen entanglement scheme. The M{\o}lmer-S{\o}rensen gate
is widely used in emerging quantum computers using trapped ion qubits and
currently features some of the highest fidelities of any quantum gate under
consideration. We find arbitrarily high fidelity for the coherent time
evolution of the two-atom state even at non-zero temperature.Comment: 6 pages, 3 figure