Creation of resilient entangled states and a resource for measurement-based quantum computation with optical superlattices

Abstract

We investigate how to create entangled states of ultracold atoms trapped in optical lattices by dynamically manipulating the shape of the lattice potential. We consider an additional potential (the superlattice) that allows both the splitting of each site into a double well potential, and the control of the height of potential barrier between sites. We use superlattice manipulations to perform entangling operations between neighbouring qubits encoded on the Zeeman levels of the atoms without having to perform transfers between the different vibrational states of the atoms. We show how to use superlattices to engineer many-body entangled states resilient to collective dephasing noise. Also, we present a method to realize a 2D resource for measurement-based quantum computing via Bell-pair measurements. We analyze measurement networks that allow the execution of quantum algorithms while maintaining the resilience properties of the system throughout the computation.

23 pages, 6 figures, IOP style, published in New Journal of Physics. Minor corrections/few typos removed

References in corpus (13)

• Controlled exchange interaction between pairs of neutral atoms in an optical lattice
• A lattice of double wells for manipulating pairs of cold atoms
• Novel schemes for measurement-based quantum computation
• Measurement-based quantum computation beyond the one-way model
• Precision measurement of spin-dependent interaction strengths for spin-1 and spin-2 87Rb atoms
• Coherent collisional spin dynamics in optical lattices
• Sublattice addressing and spin-dependent motion of atoms in a double-well lattice
• Manipulation of Single Neutral Atoms in Optical Lattices
• Bose-Einstein condensation of trapped interacting spin-1 atoms
• Preparation and detection of magnetic quantum phases in optical superlattices
• Coherently controlled entanglement generation in a binary Bose-Einstein condensate
• One-way quantum computing in a decoherence-free subspace
• Fast initialization of a high-fidelity quantum register using optical superlattices

Cited by in corpus (11)

• Quantum Many-Body Dynamics of Coupled Double-Well Superlattices
• Spin-dependent Optical Superlattice
• Ultracold atoms in an optical lattice with dynamically variable periodicity
• Functional building blocks for scalable multipartite entanglement in optical lattices
• Macroscopic Superpositions of Phase States with Bose-Einstein Condensates
• Preparation of Decoherence Free Cluster States with Optical Superlattices
• Mean-Field Analysis of Spinor Bosons in Optical Superlattices
• A scheme to create and verify scalable entanglement in optical lattice
• Splitting and connecting singlets in atomic quantum circuits
• Quadrature interferometry for nonequilibrium ultracold bosons in optical lattices
• Measurement-based interleaved randomised benchmarking using IBM processors