Coherent control of a nuclear spin via interactions with a rare-earth ion in the solid-state

Abstract

Individually addressed Er${}^{3+}$ ions in solid-state hosts are promising resources for quantum repeaters, because of their direct emission in the telecom band and compatibility with silicon photonic devices. While the Er${}^{3+}$ electron spin provides a spin-photon interface, ancilla nuclear spins could enable multi-qubit registers with longer storage times. In this work, we demonstrate coherent coupling between the electron spin of a single Er${}^{3+}$ ion and a single $I=1/2$ nuclear spin in the solid-state host crystal, which is a fortuitously located proton (${}^1$H). We control the nuclear spin using dynamical decoupling sequences applied to the electron spin, implementing one- and two-qubit gate operations. Crucially, the nuclear spin coherence time exceeds the electron coherence time by several orders of magnitude, because of its smaller magnetic moment. These results provide a path towards combining long-lived nuclear spin quantum registers with telecom-wavelength emitters for long-distance quantum repeaters.

References in corpus (10)

• Unconditional quantum teleportation between distant solid-state qubits
• Decoherence-protected quantum gates for a hybrid solid-state spin register
• Detection and control of individual nuclear spins using a weakly coupled electron spin
• Fault-tolerant operation of a logical qubit in a diamond quantum processor
• Coherent properties of single rare-earth spin qubits
• Nuclear spin-wave quantum register for a solid state qubit
• Erbium-Implanted Materials for Quantum Communication Applications
• Role of carbon and hydrogen in limiting $n$-type doping of monoclinic (Al${}_x$Ga${}_{1-x}$)${}_2$O${}_3$
• Spectral multiplexing of telecom emitters with stable transition frequency
• Hybrid microwave-optical scanning probe for addressing solid-state spins in nanophotonic cavities

Cited by in corpus (19)

• Indistinguishable telecom band photons from a single erbium ion in the solid state
• Quantum networks with neutral atom processing nodes
• Frequency tunable, cavity-enhanced single erbium quantum emitter in the telecom band
• Detection of single ions in a nanoparticle coupled to a fiber cavity
• A perspective on the pathway to a scalable quantum internet using rare-earth ions
• Stark tuning of telecom single-photon emitters based on a single Er${}^{3+}$
• Spectral Multiplexing of Rare-earth Emitters in a Co-doped Crystalline Membrane
• Quantum networks using rare-earth ions
• Control of solid-state nuclear spin qubits using an electron spin-1/2
• Optimal remote restoring of quantum states in communication lines via local magnetic field
• Improved Electron-Nuclear Quantum Gates for Spin Sensing and Control
• Isolation of individual Er quantum emitters in anatase TiO${}_2$ on Si photonics
• Bath Dynamical Decoupling with a Quantum Channel
• Erbium Quantum Memory Platform with Long Optical Coherence via Back-End of Line Deposition on Foundry-Fabricated Photonics
• Hilbert Space Fragmentation and Subspace Scar Time-Crystallinity in Driven Homogeneous Central-Spin Models
• Slowly generated anomalously large nuclear field in bulk n-AlGaAs
• Nanocavity-mediated Purcell enhancement of Er in TiO${}_2$ thin films grown via atomic layer deposition
• Efficient Quantum Repeater with Single Atoms in Cavities
• Coherence restoring in communication line via controlled interaction with environment