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arXiv · 0807.0907

Generation of entangled channels for perfect teleportation channels using multi-electron quantum dots

D. D. Bhaktavatsala Rao·Sayantan Ghosh·Prasanta K Panigrahi
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Abstract

In this work we have proposed a scheme for generating $N$ qubit entangled states which can teleport an unknown state perfectly. By switching on the exchange interaction ($J$) between the qubits one can get the desired states periodically. A multi electron quantum dot can be a possible realization for generating such $N$ qubit states with high fidelity. In the limit of $N \to \infty$, there exists a unique time $t=\frac{1}{J}\cos^{-1}(-1/8)$ where the Hamiltonian dynamics gives the $N$ qubit state that can assist perfect teleportation. We have also discussed the effect of the nuclear spin environment on the fidelity of teleportation for a general $N$ qubit entangled channel.

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D. D. Bhaktavatsala Rao, Sayantan Ghosh, Prasanta K Panigrahi. 2008-07-06. Generation of entangled channels for perfect teleportation channels using multi-electron quantum dots. https://doi.org/10.1103/physreva.78.042328

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