Optical spectroscopy, magnetic <math><mi>g</mi></math> tensors, and decoherence studies of magnetic dipole transitions of <math><mrow><mi mathvariant="normal">E</mi><msup><mrow><mi mathvariant="normal">r</mi></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup></mrow></math> at <math><msub><mi mathvariant="normal">C</mi><mrow><mn>3</mn><mi mathvariant="normal">i</mi></mrow></msub></math>-symmetry lattice sites in <math><mrow><msub><mi mathvariant="normal">Y</mi><mn>2</mn></msub><msub><mi mathvariant="normal">O</mi><mn>3</mn></msub></mrow></math> at 1.5 µm

Böttger, Thomas; Reinemer, G.D.; Thiel, C.W.; Cone, R.L.

doi:10.1103/PhysRevB.111.045119

Optical spectroscopy, magnetic $g$ tensors, and decoherence studies of magnetic dipole transitions of $E r^{3 +}$ at $C_{3 i}$ -symmetry lattice sites in $Y_{2} O_{3}$ at 1.5 µm

Jan 7, 2025

16 pages

Published in:

Phys.Rev.B 111 (2025) 4, 045119

Published: Jan 7, 2025

DOI:

10.1103/PhysRevB.111.045119 (publication)

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Abstract: (APS)

When introduced as dopants into

Y_{2} O_{3}

,

E r^{3 +}

ions replace

Y^{3 +}

ions at two crystallographic sites of

C_{2}

and

C_{3 i}

point symmetries. The

C_{3 i}

site is particularly interesting, given that the inversion symmetry prohibits static electric-dipole moments and electric-dipole transitions, resulting in 1.5 µm optical transitions characterized by purely magnetic-dipole properties. Employing

E r^{3 +} {}^{4}I_{15 / 2} \leftrightarrow {}^{4}I_{13 / 2}

transitions, we examined the inherent

C_{3 i}

site of

E r^{3 +}

in

Y_{2} O_{3}

for its potential in quantum information science and spectral hole burning applications. Our approach involved absorption and site-selective fluorescence spectroscopy to discern

E r^{3 +}

energy levels and revealed an excited-state lifetime of 14.6 ms. High-resolution laser spectroscopy at 3.7 K indicated an inhomogeneous linewidth of 1.3 GHz in our sample. Orientation-dependent Zeeman laser absorption spectroscopy facilitated the determination of the full

g

tensors for both the ground and excited states, confirming the

C_{3 i}

site assignment. Furthermore, it identified a suitable magnetic field direction for mitigating decoherence, a finding corroborated through two-pulse photon echo spectroscopy. Our study presents photon echo coherent transient measurements related to magnetic-dipole-allowed rare-earth ion transitions at the

C_{3 i}

site. The observed decoherence, attributed to spectral diffusion arising from

E r^{3 +} - E r^{3 +}

magnetic-dipole interactions, underscores the complex spin dynamics at play in systems with multiple inequivalent dopant sites. Coupled with the practicality of telecom laser wavelengths, our investigation highlights the promise of magnetic-dipole transitions in advancing quantum information science and spectral hole burning applications.

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Optical spectroscopy, magnetic g tensors, and decoherence studies of magnetic dipole transitions of Er3+ at C3i-symmetry lattice sites in Y2O3 at 1.5 µm

Citations per year

Rare-earth-doped materials for applications in quantum information storage and signal processing

Quantum information transfer using photons

Interfacing superconducting qubits and telecom photons via a rare-earth-doped crystal

Magneto-Optic Modulator with Unit Quantum Efficiency

Perspectives on quantum transduction

Photon-echo quantum memory in solid state systems

Optical decoherence and spectral diffusion at

Effects of magnetic field orientation on optical decoherence in

Coherence time of over a second in a telecom-compatible quantum memory storage material

Coherent integration of 0.5 GHz spectral holograms at 1536 nm using dynamic biphase codes

Spatial-spectral holographic real-time correlative optical processor with >100 Gb/s throughput

Telecom wavelength optical processor for wideband spectral analysis of radiofrequency signals

Laser stabilization at 1536 nm using regenerative spectral hole burning

Programmable laser frequency stabilization at 1523 nm by use of persistent spectral hole burning

Frequency stabilization to

Laser linewidth narrowing using transient spectral hole burning

Rare-earth doped transparent ceramics for spectral filtering and quantum information processing

Development and characterization of high suppression and high étendue narrowband spectral filters

Spectroscopy and dynamics of

Controlled compositional disorder in

Magnetic

Nanophotonic Quantum Storage at Telecommunication Wavelength

Optical decoherence and persistent spectral hole burning in

impurities in

Rare-earth-doped

Optical spectroscopy, magnetic $g$ tensors, and decoherence studies of magnetic dipole transitions of $E r^{3 +}$ at $C_{3 i}$ -symmetry lattice sites in $Y_{2} O_{3}$ at 1.5 µm