A5088558323- Quantum optics and atomic interactions
- Quantum and electron transport phenomena
- Atomic and Subatomic Physics Research
- Photonic and Optical Devices
- Quantum Information and Cryptography
- Electron Spin Resonance Studies
- Magneto-Optical Properties and Applications
- Spectroscopy and Quantum Chemical Studies
- Nanowire Synthesis and Applications
- Silicon Nanostructures and Photoluminescence
- Semiconductor Quantum Structures and Devices
- Neural Networks and Reservoir Computing
University of Chicago
2022-2023
Erbium-doped solids are prime candidates for quantum memories in optical networks given their telecom-compatible photon emission. An electron spin of erbium with millisecond coherence time is desirable generating remote entanglement between adjacent network nodes. Here we report GHz-range electron-spin transitions ${}^{167}{\mathrm{Er}}^{3+}$ a yttrium oxide (${\mathrm{Y}}_{2}{\mathrm{O}}_{3}$) matrix times that consistently longer than millisecond. By polarizing paramagnetic impurity spins...
Defects and dopant atoms in solid state materials are a promising platform for realizing single photon sources quantum memories, which the basic building blocks of repeaters needed long distance networks. In particular, trivalent erbium (Er3+) is interest because it couples C-band telecom optical transitions with spin-based memory platform. order to produce at scale required networks imperative integrate these necessary mature scalable semiconductor processes. this work, we demonstrate...
Abstract 167 Er 3+ doped solids are a promising platform for quantum technology due to erbium’s telecom C-band optical transition and its long hyperfine coherence times. We experimentally study the spin Hamiltonian dynamics of spins in Y 2 O 3 using electron paramagnetic resonance (EPR) spectroscopy. The anisotropic Zeeman, nuclear quadrupole matrices fitted data obtained by X-band (9.5 GHz) EPR perform pulsed spectroscopy measure relaxation time T 1 principal axes an g tensor. Long...
Defects and dopant atoms in solid state materials are a promising platform for realizing single photon sources quantum memories, which the basic building blocks of repeaters needed long distance networks. In particular, trivalent erbium (Er$^{3+}$) is interest because it couples C-band telecom optical transitions with spin-based memory platform. order to produce at scale required internet, imperative integrate these necessary mature scalable semiconductor processes. this work, we demonstrate...
We present general guidelines for finding solid-state systems that could serve as coherent electron-spin–photon interfaces even at relatively high temperatures, where phonons are abundant but cooling is easier, and show transition-metal ions in various crystals comply with these guidelines. As an illustrative example, we focus on divalent nickel magnesium oxide. perform electron-spin-resonance spectroscopy polarization-sensitive magneto-optical fluorescence of a dense ensemble find (i) the...
Rare-earth ion defects in solid-state hosts have emerged as a promising candidate for emissive quantum memories owing to their inherent spin–photon interface and long optical spin coherence times. Erbium (Er<sup>3+</sup>) particular has transitions the C-band making it well suited use of existing telecom technology infrastructure. In this work, we present platform integrate rare-earth ions into standard silicon photonic circuits. is co-deposited CMOS-compatible TiO<sub>2</sub> host films...
We perform correlated optical-spin coherence spectroscopy on epitaxial rare-earth qubits in an oxide thin film. Single Er 3+ ions are optically addressed and used to probe coupling two-level-systems as a simultaneous decoherence mechanism.
Erbium telecom qubits in C 3i centrosymmetric site epitaxial yttrium oxide thin films are coupled to optical and microwave resonators, demonstrating millisecond spin coherence kHz linewidths approaching the radiative limit.
Optically active solid-state spin qubits thrive as an appealing technology for quantum interconnect and networking, owing to their atomic size, scalable creation, long-lived coherence, ability coherently interface with flying qubits. Trivalent erbium dopants in particular emerge a compelling candidate telecom C band emission shielded 4f intra-shell spin-optical transitions. However, prevailing top-down architecture rare-earth devices has not allowed simultaneous long optical coherence...
Erbium-doped solids are prime candidates for optical quantum communication networks due to erbium's telecom C-band emission. A long-lived electron spin of erbium with millisecond coherence time is highly desirable establishing entanglement between adjacent repeater nodes while long-term storage the could rely on transferring second-long nuclear spins. Here we report GHz-range transitions $^{167}\mathrm{Er}^{3+}$ in yttrium oxide ($\mathrm{Y_2O_3}$) matrix times that consistently longer than...
We present general guidelines for finding solid-state systems that could serve as coherent electron spin-photon interfaces even at relatively high temperatures, where phonons are abundant but cooling is easier, and show transition metal ions in various crystals comply with these guidelines. As an illustrative example, we focus on divalent nickel magnesium oxide. perform spin resonance spectroscopy polarization-sensitive magneto-optical fluorescence of a dense ensemble find (i) the...