Teleportation on a quantum dot array

Abstract

We present a model of quantum teleportation protocol based on a double quantum dot array. The unknown qubit is encoded using a pair of quantum dots, coupled by tunneling, with one excess electron. It is shown how to create maximally entangled states with this kind of qubits using an adiabatically increasing Coulomb repulsion between different pairs. This entangled states are exploited to perform teleportation again using an adiabatic coupling between them and the incoming unknown state. Finally, a sudden separation of Bob's qubit enables a time evolution of Alice's state providing a modified version of standard Bell measurement. Substituting the four quantum dots entangled state with a chain of coupled DQD's, a quantum channel with high fidelity arises from this scheme allowing the transmission over long distances.

4 pages, 2 figures

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Cited by in corpus (18)

• Transfer of arbitrary two qubit states via a spin chain
• Thermal entanglement and correlated coherence in two coupled double quantum dots systems
• Spin chains for two-qubit teleportation
• Entanglement and quantum state engineering in the optically driven two-electron double-dot structure
• Deterministic teleportation of electrons in a quantum dot nanostructure
• Proposal for teleportation of charge qubits via superradiance
• Quantum teleportation of electrons in quantum wires with surface acoustic waves
• Thermal entanglement and quantum coherence of a single electron in a double quantum dot with Rashba Interaction
• Engineering massive quantum memories by topologically time-modulated spin rings
• Optimal electron propagation on a quantum chain by a topological phase
• Double dot chain as a macroscopic quantum bit
• Teleportation between distant qudits via scattering of mobile qubits
• Tuning spatial entanglement in interacting few-electron quantum dots
• Information transfer rates in spin quantum channels
• Entanglement creation and distribution on a graph of exchange-coupled qutrits
• Orbital and electronic entanglement in quantum teleportation schemes
• Massive Quantum Memories by Periodically Inverted Dynamic Evolutions
• Charge qubit entanglement via conditional single-electron transfer in an array of quantum dots