Implementing controlled-NOT gate based on free spin qubits with semiconductor quantum-dot array

Details Implementing controlled-NOT gate based on free spin qubits with semiconductor quantum-dot array Implementing controlled-NOT gate based on free spin qubits with semiconductor quantum-dot array

2007-08-19

arxiv.org/abs/0708.2517v1

EuroPhys. Lett.71(4),524-529(2005)

Physics

Quantum Physics

4 pages

Scientific paper

10.1209/epl/i2005-10117-0

Based on electron spins in semiconductor quantum dots as qubits, a new quantum controlled-NOT(CNOT) gate is constructed in solid nanostructure without resorting to spin-spin interactions. Single electron tunneling technology and coherent quantum-dot cellular automata architecture are used to generate an ancillary charge entangled state. Using the ancillary charge entangled state as an intermediate state, we obtain a spin entangled state and design a CNOT gate by using only single spin rotations.

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