Optical and Zeeman spectroscopy of individual Er ion pairs in silicon

Abstract

We make the first study the optical energy level structure and interactions of pairs of single rare earth ions using a hybrid electro-optical detection method applied to Er-implanted silicon. Two examples of Er3+ pairs were identified in the optical spectrum by their characteristic energy level splitting patterns, and linear Zeeman spectra were used to characterise the sites. One pair is positively identified as two identical Er3+ ions in sites of at least C2 symmetry coupled via a large, 200 GHz Ising-like spin interaction and 1.5 GHz resonant optical interaction. Small non-Ising contributions to the spin interaction are attributed to distortion of the site measurable because of the high resolution of the single-ion measurement. The interactions are compared to previous measurements made using rare earth ensemble systems, and the application of this type of strongly coupled ion array to quantum computing is discussed.

11 pages, 5 figures

References in corpus (13)

• Coherent control and single-shot readout of a rare-earth ion embedded in a nanophotonic cavity
• Optical quantum nondemolition measurement of a solid-state spin without a cycling transition
• Coherent properties of single rare-earth spin qubits
• Parallel single-shot measurement and coherent control of solid-state spins below the diffraction limit
• Erbium dopants in silicon nanophotonic waveguides
• Sub-threshold channels at the edges of nanoscale triple-gate silicon transistors
• Sensing individual nuclear spins with a single rare-earth electron spin
• Quantum processing with ensembles of rare earth ions in a stoichiometric crystal
• Universal quantum computing using electro-nuclear wavefunctions of rare-earth ions
• High resolution spectroscopy of individual erbium ions in strong magnetic fields
• Spin echo from erbium implanted silicon
• Spontaneous Rotational Symmetry Breaking in a Kramers Two-Level System
• Roadmap for Rare-earth Quantum Computing

Cited by in corpus (2)

• Purcell enhancement of erbium ions in TiO${}_2$ on silicon nanocavities
• Quantum Gates Between Mesoscopic Spin Ensembles