Scalable quantum computation based on quantum actuated nuclear-spin decoherence-free qubits

Abstract

We propose a novel architecture for scalable quantum computation based on quantum actuated decoherence-free (DF) qubits. Each qubit is encoded by the DF subspace of a nuclear spin pair and has long coherence time. A nitrogen-vacancy center in diamond is chosen as the quantum actuator to realize initialization, readout and universal control of DF qubits with fidelities higher than 99%. It reduces the challenge of classical interfaces from controlling and observing complex quantum systems down to a simple quantum actuator. Our scheme also provides a novel way to handle complex quantum systems.

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Cited by in corpus (2)

• Quantum information processing with closely-spaced diamond color centers in strain and magnetic fields
• Noise-resilient architecture of a hybrid electron-nuclear quantum register in diamond