Deterministic teleportation of electrons in a quantum dot nanostructure

Details Deterministic teleportation of electrons in a quantum dot nanostructure Deterministic teleportation of electrons in a quantum dot nanostructure

2006-03-17

arxiv.org/abs/cond-mat/0603464v2

Phys. Rev. Lett. 96, 246801 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures, a few typographical changes

Scientific paper

10.1103/PhysRevLett.96.246801

We present a proposal for deterministic quantum teleportation of electrons in a semiconductor nanostructure consisting of a single and a double quantum dot. The central issue addressed in this paper is how to design and implement the most efficient - in terms of the required number of single and two-qubit operations - deterministic teleportation protocol for this system. Using a group-theoretical analysis we show that deterministic teleportation requires a minimum of three single-qubit rotations and two entangling (sqrt(swap)) operations. These can be implemented for spin qubits in quantum dots using electron spin resonance (for single-spin rotations) and exchange interaction (for sqrt(swap) operations).

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