Long-distance entanglement in many-body atomic and optical systems
arXiv:0910.0016 · doi:10.1088/1367-2630/12/2/025019
Abstract
We discuss the phenomenon of long-distance entanglement in the ground state of quantum spin models, its use in high-fidelity and robust quantum communication, and its realization in many-body systems of ultracold atoms in optical lattices and in arrays of coupled optical cavities. We investigate different patterns of site-dependent interaction couplings, singling out two general settings: Patterns that allow for perfect long-distance entanglement (LDE) in the ground state of the system, namely such that the end-to-end entanglement remains finite in the thermodynamic limit, and patterns of quasi long-distance entanglement (QLDE) in the ground state of the system, namely, such such that the end-to-end entanglement vanishes with a very slow power-law decay as the length of the spin chain is increased. We discuss physical realizations of these models in ensembles of ultracold bosonic atoms loaded in optical lattices. We show how, using either suitably engineered super-lattice structures or exploiting the presence of edge impurities in lattices with single periodicity, it is possible to realize models endowed with nonvanishing LDE or QLDE. We then study how to realize models that optimize the robustness of QLDE at finite temperature and in the presence of imperfections using suitably engineered arrays of coupled optical cavities. We finally introduce LDE-based schemes of long-distance quantum teleportation in linear arrays of coupled cavities and show that they allow for high-fidelity and high success rates even at moderately high temperatures.
16 pages, 22 figures. Added detailed discussion on resilience against imperfections and disorder
References in corpus (26)
- The logarithmic negativity: A full entanglement monotone that is not convex
- Controlling Spin Exchange Interactions of Ultracold Atoms in Optical Lattices
- Strongly Interacting Polaritons in Coupled Arrays of Cavities
- Quantum phase transitions of light
- General Monogamy Inequality for Bipartite Qubit Entanglement
- Photon blockade induced Mott transitions and XY spin models in coupled cavity arrays
- Counterflow Superfluidity of Two-Species Ultracold Atoms in a Commensurate Optical Lattice
- Entanglement versus Correlations in Spin Systems
- Quantum Many-Body Phenomena in Coupled Cavity Arrays
- Dynamics of Entanglement in One-Dimensional Spin Systems
- Unmodulated spin chains as universal quantum wires
- Mott-insulating and glassy phases of polaritons in 1D arrays of coupled cavities
- Long-distance entanglement in spin systems
- Effective spin systems in coupled micro-cavities
- Long-distance entanglement and quantum teleportation in XX spin chains
- Qubit Teleportation and Transfer across Antiferromagnetic Spin Chains
- Fermionic entanglement in itinerant systems
- Atomic Fermi-Bose mixtures in inhomogeneous and random lattices: From Fermi glass to quantum spin glass and quantum percolation
- Teleportation of entangled states without Bell-state measurement
- High-Temperature Atomic Superfluidity in Lattice Boson-Fermion Mixtures
- Manipulation of Single Neutral Atoms in Optical Lattices
- Excitation and Entanglement Transfer Versus Spectral Gap
- Mixtures of strongly interacting bosons in optical lattices
- Addressing individual atoms in optical lattices with standing-wave driving fields
- Long-distance entanglement and quantum teleportation in coupled cavity arrays
- Quantum phases of Fermi-Fermi mixtures in optical lattices
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- Adiabatic quantum simulation with a segmented ion trap: Application to long-distance entanglement in quantum spin systems
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