Freezing distributed entanglement in spin chains

Abstract

We show how to freeze distributed entanglement that has been created from the natural dynamics of spin chain systems. The technique that we propose simply requires single-qubit operations and isolates the entanglement in specific qubits at the ends of branches. Such frozen entanglement provides a useful resource, for example for teleportation or distributed quantum processing. The scheme can be applied to a wide range of systems -- including actual spin systems and alternative qubit embodiments in strings of quantum dots, molecules or atoms.

5 pages, to appear in Phys. Rev. A (Rapid Communication)

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Cited by in corpus (21)

• A Review of Perfect State Transfer and its Application as a Constructive Tool
• Quantum Ratchets for Quantum Communication with Optical Superlattices
• State transfer in intrinsic decoherence spin channels
• Exploiting Quench Dynamics in Spin Chains for Distant Entanglement and Quantum Communication
• Characterization of qubit chains by Feynman probes
• Spin State Transfer in Laterally Coupled Quantum Dot Chains with Disorders
• State transfer in dissipative and dephasing environments
• Feasibility of approximating spatial and local entanglement in long-range interacting systems using the extended Hubbard model
• Entanglement generation and perfect state transfer in ferromagnetic qubit chains
• Analysis and minimization of bending losses in discrete quantum networks
• End-to-end entanglement in Bose-Hubbard chains
• Unitary Design of Quantum Spin Networks for Robust Routing, Entanglement Generation, and Phase Sensing
• Large Spin Entangled Current from a Passive Device
• Cooling ultracold bosons in optical lattices by spectral transform
• Creating and preserving multi-partite entanglement with spin chains
• Fast and efficient long-distance quantum state transfer in long-range spin-$\frac{1}{2}$ models
• Scalable Quantum Spin Networks from Unitary Construction
• Comparison of entangling protocols in ABC-type spin chains
• Dissipation-assisted quantum correlations in coupled qubits
• Transforming spin chains with a continuous driving field
• Quantum Effects In Low Temperature Bosonic Systems