Quantum Computation with Diatomic Bits in Optical Lattices

Abstract

We propose a scheme for scalable and universal quantum computation using diatomic bits with conditional dipole-dipole interaction, trapped within an optical lattice. The qubit states are encoded by the scattering state and the bound heteronuclear molecular state of two ultracold atoms per site. The conditional dipole-dipole interaction appears between neighboring bits when they both occupy the molecular state. The realization of a universal set of quantum logic gates, which is composed of single-bit operations and a two-bit controlled-NOT gate, is presented. The readout method is also discussed.

5 pages, 1 eps figure, accepted for publication in Phys. Rev. A

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Cited by in corpus (25)

• Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
• Cold and Ultracold Molecules: Science, Technology, and Applications
• Quantum control of molecular rotation
• Schemes for robust quantum computation with polar molecules
• Magneto-Optical Trap for Polar Molecules
• Robust encoding of a qubit in a molecule
• Preparation of a quantum state with one molecule at each site of an optical lattice
• Prospects for Quantum Computing with an Array of Ultracold Polar Paramagnetic Molecules
• Implementation of Quantum Logic Gates Using Polar Molecules in Pendular States
• Entanglement of polar symmetric top molecules as candidate qubits
• Quantum computing implementations with neutral particles
• Entanglement of polar molecules in pendular states
• Quantum phase gate and controlled entanglement with polar molecules
• Efficient formation of ground state ultracold molecules via STIRAP from the continuum at a Feshbach resonance
• Identification of Deeply Bound Heteronuclear Molecules Using Pulsed Laser Depletion Spectroscopy
• Single photon nonlinearities using arrays of cold polar molecules
• Structure and melting behavior of classical bilayer crystals of dipoles
• Quantum gate using qubit states separated by terahertz
• Exact Floquet states of a driven condensate and their stabilities
• Theory of waveguide-QED with moving emitters
• Influence of intrinsic decoherence on tripartite entanglement and bipartite fidelity of polar molecules in pendular states
• Nanofibre-based trap for Rb${}_2$ molecule
• Implementation of quantum logic gates using coupled Bose-Einstein condensates
• Quantum computation with scattering matrices
• Encoding a qubit into multilevel subspaces