Entanglement distribution for a practical quantum-dot-based quantum processor architecture

Abstract

We propose a quantum dot architecture for enabling universal quantum information processing. Quantum registers, consisting of arrays of vertically stacked self-assembled semiconductor quantum dots, are connected by chains of in-plane self-assembled dots. We propose an entanglement distributor, a device for producing and distributing maximally entangled qubits on demand, communicated through in-plane dot chains. This enables the transmission of entanglement to spatially separated register stacks, providing a resource for the realisation of a sizeable quantum processor built from coupled register stacks of practical size. Our entanglement distributor could be integrated into many of the present proposals for self-assembled quantum dot-based quantum computation. Our device exploits the properties of simple, relatively short, spin-chains and does not require microcavities. Utilizing the properties of self-assembled quantum dots, after distribution the entanglement can be mapped into relatively long lived spin qubits and purified, providing a flexible, distributed, off-line resource.

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References in corpus (11)

• Purification of Noisy Entanglement and Faithful Teleportation via Noisy Channels
• Quantum-Information Processing with Semiconductor Macroatoms
• Quantum Computation with Quantum Dots and Terahertz Cavity Quantum Electrodynamics
• Electro-optical properties of semiconductor quantum dots: Application to quantum information processing
• Spin-based optical quantum gates via Pauli blocking in semiconductor quantum dots
• Anticrossings in Foerster Coupled Quantum Dots
• Selective spin coupling through a single exciton
• Spin-based quantum information processing with semiconductor quantum dots and cavity QED
• Creating excitonic entanglement in quantum dots through the optical Stark effect
• Spin-based quantum gating with semiconductor quantum dots by bichromatic radiation method
• Global Optical Control of a Quantum Spin Chain

Cited by in corpus (22)

• Quantum Communication through Spin Chain Dynamics: an Introductory Overview
• Topologically protected localised states in spin chains
• Robust Quantum Entanglement Generation and Generation-plus-Storage Protocols with Spin Chains
• Quantum state transfer and time-dependent disorder in Quantum Chains
• Scalable experimental estimation of multipartite entanglement
• Spin State Transfer in Laterally Coupled Quantum Dot Chains with Disorders
• Towards optimized suppression of dephasing in systems subject to pulse timing constraints
• Effect of perturbations on information transfer in spin chains
• Effect of confinement potential geometry on entanglement in quantum dot-based nanostructures
• The Hubbard model as an approximation to the entanglement in nanostructures
• Freezing distributed entanglement in spin chains
• Feasibility of approximating spatial and local entanglement in long-range interacting systems using the extended Hubbard model
• Evolutionary computation for adaptive quantum device design
• Robustness of spin-chain state-transfer schemes
• Anderson localisation in spin chains for perfect state transfer
• Continuous dynamical decoupling of spin chains: modulating the spin-environment and spin-spin interactions
• Large Spin Entangled Current from a Passive Device
• Generation and Robustness of Quantum Entanglement in Spin Graphs
• Creating and preserving multi-partite entanglement with spin chains
• Perfect transfer of arbitrary continuous variable states across optical waveguide lattices
• Comparison of entangling protocols in ABC-type spin chains
• Influence of errors on the transport of quantum information through distant quantum dot spin qubits