Kevin L. Silverman
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View article: Heterogeneous tantala photonic integrated circuits for sub-micron wavelength applications
Heterogeneous tantala photonic integrated circuits for sub-micron wavelength applications Open
Atomic and trapped-ion systems are the backbone of an emerging generation of quantum-based positioning, navigation, and timing (PNT) technologies. The miniaturization of such quantum systems offers tremendous technological advantages, espe…
View article: Modeling Short-Range Microwave Networks to Scale Superconducting Quantum Computation
Modeling Short-Range Microwave Networks to Scale Superconducting Quantum Computation Open
A core challenge for superconducting quantum computers is to scale up the number of qubits in each processor without increasing noise or cross-talk. Distributed quantum computing across small qubit arrays, known as chiplets, can address th…
View article: Heterogeneous tantala photonic integrated circuits for sub-micron wavelength applications
Heterogeneous tantala photonic integrated circuits for sub-micron wavelength applications Open
Atomic and trapped-ion systems are the backbone of a new generation of quantum-based positioning, navigation, and timing (PNT) technologies. The miniaturization of such quantum systems offers tremendous technological advantages, especially…
View article: Coherent dynamics in an optical quantum dot with phonons and photons
Coherent dynamics in an optical quantum dot with phonons and photons Open
Genuine quantum-mechanical effects are readily observable in modern optomechanical systems comprising “classical” (bosonic) optical resonators. Unique features and advantages of optical two-level systems (qubits) for optomechanics, however…
View article: Gated InAs quantum dots embedded in surface acoustic wave cavities for low-noise optomechanics
Gated InAs quantum dots embedded in surface acoustic wave cavities for low-noise optomechanics Open
Self-assembled InAs quantum dots (QDs) are promising optomechanical elements due to their excellent photonic properties and sensitivity to local strain fields. Microwave-frequency modulation of photons scattered from these efficient quantu…
View article: Coherent Control of an Optical Quantum Dot Using Phonons and Photons
Coherent Control of an Optical Quantum Dot Using Phonons and Photons Open
Genuine quantum-mechanical effects are readily observable in modern optomechanical systems comprising bosonic ("classical") optical resonators. Here we describe unique features and advantages of optical two-level systems, or qubits, for op…
View article: Gated InAs quantum dots embedded in surface acoustic wave cavities for low-noise optomechanics
Gated InAs quantum dots embedded in surface acoustic wave cavities for low-noise optomechanics Open
Self-assembled InAs quantum dots (QDs) are promising optomechanical elements due to their excellent photonic properties and sensitivity to local strain fields. Microwave-frequency modulation of photons scattered from these efficient quantu…
View article: Monolithic polarizing circular dielectric gratings on bulk substrates for improved photon collection from <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"><mml:mrow><mml:mi>In</mml:mi><mml:mi>As</mml:mi></mml:mrow></mml:math> quantum dots
Monolithic polarizing circular dielectric gratings on bulk substrates for improved photon collection from quantum dots Open
III-V semiconductor quantum dots (QDs) are near-ideal and versatile single-photon sources. Because of the capacity for monolithic integration with photonic structures as well as optoelectronic and optomechanical systems, they are proving u…
View article: Monolithic Polarizing Circular Dielectric Gratings on Bulk Substrates for Improved Photon Collection from InAs Quantum Dots
Monolithic Polarizing Circular Dielectric Gratings on Bulk Substrates for Improved Photon Collection from InAs Quantum Dots Open
III-V semiconductor quantum dots (QDs) are near-ideal and versatile single-photon sources. Because of the capacity for monolithic integration with photonic structures as well as optoelectronic and optomechanical systems, they are proving u…
View article: Large Single-Phonon Optomechanical Coupling between Quantum Dots and Tightly Confined Surface Acoustic Waves in the Quantum Regime
Large Single-Phonon Optomechanical Coupling between Quantum Dots and Tightly Confined Surface Acoustic Waves in the Quantum Regime Open
Surface acoustic waves (SAWs) coupled to quantum dots (QDs), trapped atoms and ions, and point defects have been proposed as quantum transduction platforms, yet the requisite coupling rates and cavity lifetimes have not been experimentally…
View article: Quantum phase modulation with acoustic cavities and quantum dots
Quantum phase modulation with acoustic cavities and quantum dots Open
Fast, efficient, and low-power modulation of light at microwave frequencies is crucial for chip-scale classical and quantum processing as well as for long-range networks of superconducting quantum processors. A successful approach to bridg…
View article: Modeling Short-Range Microwave Networks to Scale Superconducting Quantum Computation
Modeling Short-Range Microwave Networks to Scale Superconducting Quantum Computation Open
A core challenge for superconducting quantum computers is to scale up the number of qubits in each processor without increasing noise or cross-talk. Distributed quantum computing across small qubit arrays, known as chiplets, can address th…
View article: Quantum phase modulation with acoustic cavities and quantum dots
Quantum phase modulation with acoustic cavities and quantum dots Open
Fast, efficient, and low power modulation of light at microwave frequencies is crucial for chip-scale classical and quantum processing as well as for long-range networks of superconducting quantum processors. A successful approach to bridg…
View article: Single-photon generation from self-assembled GaAs/InAlAs(111)A quantum dots with ultrasmall fine-structure splitting
Single-photon generation from self-assembled GaAs/InAlAs(111)A quantum dots with ultrasmall fine-structure splitting Open
We present a novel semiconductor single-photon source based on tensile-strained (111)-oriented GaAs/InAlAs quantum dots (QDs) exhibiting ultrasmall exciton fine-structure splitting (FSS) of ≤ 8 µ eV. Using low-temperature micro-photolumine…
View article: Excitation Ladder of Cavity Polaritons
Excitation Ladder of Cavity Polaritons Open
Multidimensional coherent spectroscopy directly unravels multiply excited states that overlap in a linear spectrum. We report multidimensional coherent optical photocurrent spectroscopy in a semiconductor polariton diode and explore the ex…
View article: Strain dependence of Auger recombination in 3 <i>μ</i>m GaInAsSb/GaSb type-I active regions
Strain dependence of Auger recombination in 3 <i>μ</i>m GaInAsSb/GaSb type-I active regions Open
We differentiate the effect of strain induced by lattice-mismatched growth from strain induced by mechanical deformation on cubic nonradiative Auger recombination in narrow-gap GaInAsSb/GaSb quantum well (QW) heterostructures. The typical …
View article: Single-scan acquisition of multiple multidimensional spectra
Single-scan acquisition of multiple multidimensional spectra Open
Multidimensional coherent spectroscopy is a powerful tool for understanding the ultrafast dynamics of complex quantum systems. To fully characterize the nonlinear optical response of a system, multiple pulse sequences must be recorded and …
View article: Demonstrating sub-3 ps temporal resolution in a superconducting nanowire single-photon detector
Demonstrating sub-3 ps temporal resolution in a superconducting nanowire single-photon detector Open
Improving the temporal resolution of single photon detectors has an impact on many applications, such as increased data rates and transmission distances for both classical and quantum optical communication systems, higher spatial resolutio…
View article: Delayed formation of coherence in the emission dynamics of high-Q nanolasers
Delayed formation of coherence in the emission dynamics of high-Q nanolasers Open
In the realization of ultrasmall semiconductor lasers, cavity-QED effects are used to enhance spontaneous emission and enable the lasing threshold to be crossed with gain contributions from only a few solid-state emitters.Operation in this…
View article: Ultrafast Time-Resolved X-ray Absorption Spectroscopy of Ferrioxalate Photolysis with a Laser Plasma X-ray Source and Microcalorimeter Array
Ultrafast Time-Resolved X-ray Absorption Spectroscopy of Ferrioxalate Photolysis with a Laser Plasma X-ray Source and Microcalorimeter Array Open
The detailed pathways of photoactivity on ultrafast time scales are a topic of contemporary interest. Using a tabletop apparatus based on a laser plasma X-ray source and an array of cryogenic microcalorimeter X-ray detectors, we measured a…
View article: Quadrature demodulation of a quantum dot optical response to faint light fields
Quadrature demodulation of a quantum dot optical response to faint light fields Open
The amplitude and phase of a material's nonlinear optical response provide insight into the underlying electronic dynamics that determine its optical properties. Phase-sensitive nonlinear spectroscopy techniques are widely implemented to e…
View article: Ultrafast Time-Resolved Hard X-Ray Emission Spectroscopy on a Tabletop
Ultrafast Time-Resolved Hard X-Ray Emission Spectroscopy on a Tabletop Open
Experimental tools capable of monitoring both atomic and electronic structure on ultrafast (femtosecond to picosecond) time scales are needed for investigating photophysical processes fundamental to light harvesting, photocatalysis, energy…
View article: Ultra-low-noise monolithic mode-locked solid-state laser
Ultra-low-noise monolithic mode-locked solid-state laser Open
Low-noise, high-repetition-rate mode-locked solid-state lasers are attractive for precision measurement and microwave generation, but the best lasers in terms of noise performance still consist of complex, bulky optical setups, which limit…
View article: Optical amplitude and phase modulation dynamics at the single-photon level in a quantum dot ridge waveguide
Optical amplitude and phase modulation dynamics at the single-photon level in a quantum dot ridge waveguide Open
The amplitude and phase of a material's nonlinear optical response provide insight into the underlying electronic dynamics that determine its optical properties. Phase-sensitive nonlinear spectroscopy techniques are widely implemented to e…
View article: Electronic Enhancement of the Exciton Coherence Time in Charged Quantum Dots
Electronic Enhancement of the Exciton Coherence Time in Charged Quantum Dots Open
Minimizing decoherence due to coupling of a quantum system to its fluctuating environment is at the forefront of quantum information and photonics research. Nature sets the ultimate limit, however, given by the strength of the system's cou…
View article: Ultra-low-noise monolithic mode-locked solid-state laser
Ultra-low-noise monolithic mode-locked solid-state laser Open
Low-noise, high-repetition-rate mode-locked solid-state lasers are attractive for precision measurement and microwave generation, but the best lasers in terms of noise performance still consist of complex, bulky optical setups, which limit…