Erbium emitters in commercially fabricated nanophotonic silicon waveguides

Abstract

Quantum memories integrated into nanophotonic silicon devices are a promising platform for large quantum networks and scalable photonic quantum computers. In this context, erbium dopants are particularly attractive, as they combine optical transitions in the telecommunications frequency band with the potential for second-long coherence time. Here we show that these emitters can be reliably integrated into commercially fabricated low-loss waveguides. We investigate several integration procedures and obtain ensembles of many emitters with an inhomogeneous broadening of < 2 GHz and a homogeneous linewidth of < 30 kHz. We further observe the splitting of the electronic spin states in a magnetic field up to 9 T that freezes paramagnetic impurities. Our findings are an important step towards long-lived quantum memories that can be fabricated on a wafer-scale using CMOS technology.

References in corpus (29)

• Broadband waveguide quantum memory for entangled photons
• Quantum Storage of Photonic Entanglement in a Crystal
• Room temperature quantum bit storage exceeding 39 minutes using ionized donors in 28-silicon
• Spectral multiplexing for scalable quantum photonics using an atomic frequency comb quantum memory and feed-forward control
• Isolating and enhancing the emission of single erbium ions using a silicon nanophotonic cavity
• Coherence time of over a second in a telecom-compatible quantum memory storage material
• Telecom-heralded entanglement between remote multimode solid-state quantum memories
• Telecommunication-wavelength solid-state memory at the single photon level
• Optical addressing of an individual erbium ion in silicon
• Enhancing multiphoton rates with quantum memories
• Single artificial atoms in silicon emitting at telecom wavelengths
• Interfacing Superconducting Qubits and Telecom Photons via a Rare-Earth Doped Crystal
• Indistinguishable telecom band photons from a single erbium ion in the solid state
• Broad diversity of near-infrared single-photon emitters in silicon
• Synchronization of optical photons for quantum information processing
• All-silicon quantum light source by embedding an atomic emissive center in a nanophotonic cavity
• Individually Addressable and Spectrally Programmable Artificial Atoms in Silicon Photonics
• Erbium dopants in silicon nanophotonic waveguides
• Purcell enhancement of single-photon emitters in silicon
• Coherent and Purcell-enhanced emission from erbium dopants in a cryogenic high-Q resonator
• Narrow optical transitions in erbium-implanted silicon waveguides
• On-demand storage of photonic qubits at telecom wavelengths
• 99.992 % ${}^{28}$Si CVD-grown epilayer on 300 mm substrates for large scale integration of silicon spin qubits
• The observation of photon echoes from evanescently coupled rare-earth ions in a planar waveguide
• Storage and analysis of light-matter entanglement in a fibre-integrated system
• Sub-megahertz homogeneous linewidth for Er in Si via in situ single photon detection
• Persistent atomic frequency comb based on Zeeman sub-levels of an erbium-doped crystal waveguide
• The Zeeman and hyperfine interactions of a single ${}^{167}E{r}^{3+}$ ion in Si
• High resolution spectroscopy of individual erbium ions in strong magnetic fields

Cited by in corpus (7)

• Optical single-shot readout of spin qubits in silicon
• Characterization of the spin and crystal field Hamiltonian of erbium dopants in silicon
• Luminescence thermometry based on photon emitters in nanophotonic silicon waveguides
• Spectral stability of cavity-enhanced single-photon emitters in silicon
• Erbium Quantum Memory Platform with Long Optical Coherence via Back-End of Line Deposition on Foundry-Fabricated Photonics
• Integration of ${\text{Er}}^{3+}$-emitters in silicon-on-insulator nanodisks metasurface
• Coherent response of inhomogeneously broadened and spatially localized emitter ensembles in waveguide QED