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

Abstract

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.

4 pages

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Cited by in corpus (3)

• Single-molecule experiments in biological physics: methods and applications
• Decoherence induced by electron accumulation in quantum measurement of charge qubits
• Measurement in control and discrimination of entangled pairs under self-distortion