Quantum Teleportation in One-Dimensional Quantum Dots System

Details Quantum Teleportation in One-Dimensional Quantum Dots System Quantum Teleportation in One-Dimensional Quantum Dots System

2006-05-18

arxiv.org/abs/quant-ph/0605165v1

Chemcal Physics Letter 421 (2006) 338-342

Physics

Quantum Physics

5 pages, two figures

Scientific paper

10.1016/j.physleta.2005.11.002

We present a model of quantum teleportation protocol based on one-dimensional quantum dots system. Three quantum dots with three electrons are used to perform teleportation, the unknown qubit is encoded using one electron spin on quantum dot A, the other two dots B and C are coupled to form a mixed space-spin entangled state. By choosing the Hamiltonian for the mixed space-spin entangled system, we can filter the space (spin) entanglement to obtain pure spin (space) entanglement and after a Bell measurement, the unknown qubit is transfered to quantum dot B. Selecting an appropriate Hamiltonian for the quantum gate allows the spin-based information to be transformed into a charge-based information. The possibility of generalizing this model to N-electrons is discussed.

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