2014/02/03 by Felipe Herrera, Yudong Cao, Sabre Kais +1 · 1 citation
Computer Science · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Hamiltonian (control theory) #Optical lattice #Physics #Quantum #Quantum Information and Cryptography #Quantum computer #Quantum entanglement #Quantum mechanics #Quantum optics and atomic interactions #Qubit #Superfluidity #Topology (electrical circuits) #physics.atom-ph #physics.chem-ph #quant-ph
paper · pdf · doi:10.1088/1367-2630/16/7/075001
published as New J. Phys. 16, 075001 (2014) · 18 pages, 4 figures
arxiv created 2014/02/03 · openalex publication_date 2014/07/04 · arxiv updated 2014/07/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Implementing a scalable quantum information processor using polar molecules in optical lattices requires precise control over the long-range dipole-dipole interaction between molecules in selected lattice sites.We present here a scheme using trapped open-shell Σ 2 polar molecules that allows dipolar exchange processes between nearest and next-nearest neighbors to be controlled in order to construct a generalized transverse Ising spin Hamiltonian with tunable XX, YY and XY couplings in the rotating frame of the driving lasers.The scheme requires a moderately strong bias magnetic field together with near-infrared light to provide local tuning of the qubit energy gap, and mid-infrared pulses to perform rotational state transfer via stimulated Raman adiabatic passage.No interaction between qubits occurs in the absence of the infrared driving.We analyze the fidelity of the resulting two-qubit matchgate, and demonstrate its robustness as a function of the driving parameters.We discuss a realistic application of the system for universal matchgate quantum computing in optical lattices.