Noise-resilient architecture of a hybrid electron-nuclear quantum register in diamond

Abstract

A hybrid quantum register consisting of nuclear spins in a solid-state platform coupled to a central electron spin is expected to combine the advantages of its elements. However, the potential to exploit long nuclear spin coherence times is severely limited by magnetic noise from the central electron spin during external interrogation. We overcome this obstacle and present protocols for addressing a decoherence-free nuclear spin subspace, which was not accessible by previously existing methods. We demonstrate the efficacy of our protocols using detailed numerical simulations of a nitrogen-vacancy centre with nearby ${}^{13}$C nuclei, and show that the resulting hybrid quantum register is immune to electron spin noise and external magnetic field drifts. Our work takes an important step toward realizing robust quantum registers that can be easily manipulated, entangled, and, at the same time, well isolated from external noise, with applications from quantum information processing and communication to quantum sensing.

Revised version with more materials

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Cited by in corpus (7)

• Opportunities for long-range magnon-mediated entanglement of spin qubits via on- and off-resonant coupling
• Randomisation of Pulse Phases for Unambiguous and Robust Quantum Sensing
• Efficient entanglement of spin qubits mediated by a hot mechanical oscillator
• Modulated Continuous Wave Control for Energy-efficient Electron-nuclear Spin Coupling
• Parallel selective nuclear spin addressing for fast high-fidelity quantum gates
• Fidelity of photon-mediated entanglement between remote nuclear-spin multi-qubit registers
• Selective Hybrid Spin Interactions with Low Radiation Power