Jonathan Baugh
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View article: Electron Phase Detection in Single Molecules by Interferometry
Electron Phase Detection in Single Molecules by Interferometry Open
Interferometry has underpinned a century of discoveries, ranging from the disproval of the ether theory to the detection of gravitational waves, offering insights into wave dynamics with unrivalled precision through the measurement of phas…
View article: Electron Phase Detection in Single Molecules by Interferometry
Electron Phase Detection in Single Molecules by Interferometry Open
Interferometry has underpinned a century of discoveries, ranging from the disproval of the ether theory to the detection of gravitational waves, offering insights into wave dynamics with unrivaled precision through the measurement of phase…
View article: Automated tuning and characterization of a single-electron transistor charge sensor
Automated tuning and characterization of a single-electron transistor charge sensor Open
We present an automated protocol for tuning single-electron transistors (SETs) or single-hole transistors (SHTs) to operate as precise charge sensors. Using minimal device-specific information, the protocol performs measurements to enable …
View article: On the microscopics of proximity effects in one-dimensional superconducting hybrid systems
On the microscopics of proximity effects in one-dimensional superconducting hybrid systems Open
Investigating the microscopic details of the proximity effect is crucial for both key experimental applications and fundamental inquiries into nanoscale devices featuring superconducting elements. In this work, we develop a framework motiv…
View article: Enhancement of photoresponse for InGaAs infrared photodetectors using plasmonic WO <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mrow/> <mml:mrow> <mml:mn>3</mml:mn> <mml:mo>−</mml:mo> <mml:mi>x</mml:mi> </mml:mrow> </mml:msub> </mml:mrow> </mml:math> /Cs<sub>y</sub>WO <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mrow/> <mml:mrow> <mml:mn>3</mml:mn> <mml:mo>−</mml:mo> <mml:mi>x</mml:mi> </mml:mrow> </mml:msub> </mml:mrow> </mml:math> nanocrystals
Enhancement of photoresponse for InGaAs infrared photodetectors using plasmonic WO /Cs<sub>y</sub>WO nanocrystals Open
Fast and accurate detection of light in the near-infrared (NIR) spectral range plays a crucial role in modern society, from alleviating speed and capacity bottlenecks in optical communications to enhancing the control and safety of autonom…
View article: Enhancement of Photoresponse for InGaAs Infrared Photodetectors Using Plasmonic WO3-x/CsyWO3-x Nanocrystals
Enhancement of Photoresponse for InGaAs Infrared Photodetectors Using Plasmonic WO3-x/CsyWO3-x Nanocrystals Open
Fast and accurate detection of light in the near-infrared (NIR) spectral range plays a crucial role in modern society, from alleviating speed and capacity bottlenecks in optical communications to enhancing the control and safety of autonom…
View article: Pulsed Electroluminescence in a Dopant-free Gateable Semiconductor
Pulsed Electroluminescence in a Dopant-free Gateable Semiconductor Open
We report on a stable form of pulsed electroluminescence in a dopant-free direct bandgap semiconductor heterostructure which we coin the tidal effect. Swapping an inducing gate voltage in an ambipolar field effect transistor allows incomin…
View article: High transparency induced superconductivity in field effect two-dimensional electron gases in undoped InAs/AlGaSb surface quantum wells
High transparency induced superconductivity in field effect two-dimensional electron gases in undoped InAs/AlGaSb surface quantum wells Open
We report on transport characteristics of field effect two-dimensional electron gases (2DEGs) in 24 nm wide indium arsenide surface quantum wells. High quality single-subband magnetotransport with clear quantized integer quantum Hall plate…
View article: High transparency induced superconductivity in field effect two-dimensional electron gases in undoped InAs/AlGaSb surface quantum wells
High transparency induced superconductivity in field effect two-dimensional electron gases in undoped InAs/AlGaSb surface quantum wells Open
We report on transport characteristics of field effect two-dimensional electron gases (2DEG) in 24 nm wide indium arsenide surface quantum wells. High quality single-subband magnetotransport with clear quantized integer quantum Hall platea…
View article: Quantum optimal control robust to $1/f^α$ noises using fractional calculus: voltage-controlled exchange in semiconductor spin qubits
Quantum optimal control robust to $1/f^α$ noises using fractional calculus: voltage-controlled exchange in semiconductor spin qubits Open
Low-frequency $1/f^α$ charge noise significantly hinders the performance of voltage-controlled spin qubits in quantum dots. Here, we utilize fractional calculus to design voltage control pulses yielding the highest average fidelities for n…
View article: Observation of an abrupt 3D-2D morphological transition in thin Al layers grown by MBE on InGaAs surface
Observation of an abrupt 3D-2D morphological transition in thin Al layers grown by MBE on InGaAs surface Open
Among superconductor/semiconductor hybrid structures, in situ aluminum (Al) grown on InGaAs/InAs is widely pursued for the experimental realization of Majorana Zero Mode quasiparticles. This is due to the high carrier mobility, low effecti…
View article: Porphyrin-fused graphene nanoribbons
Porphyrin-fused graphene nanoribbons Open
Graphene nanoribbons (GNRs), nanometre-wide strips of graphene, are promising materials for fabricating electronic devices. Many GNRs have been reported, yet no scalable strategies are known for synthesizing GNRs with metal atoms and heter…
View article: Connections to the Electrodes Control the Transport Mechanism in Single‐Molecule Transistors
Connections to the Electrodes Control the Transport Mechanism in Single‐Molecule Transistors Open
When designing a molecular electronic device for a specific function, it is necessary to control whether the charge‐transport mechanism is phase‐coherent transmission or particle‐like hopping. Here we report a systematic study of charge tr…
View article: Connections to the Electrodes Control the Transport Mechanism in Single‐Molecule Transistors
Connections to the Electrodes Control the Transport Mechanism in Single‐Molecule Transistors Open
When designing a molecular electronic device for a specific function, it is necessary to control whether the charge‐transport mechanism is phase‐coherent transmission or particle‐like hopping. Here we report a systematic study of charge tr…
View article: Simulated Charge Stability in a MOSFET Linear Quantum Dot Array
Simulated Charge Stability in a MOSFET Linear Quantum Dot Array Open
In this study, we address challenges in designing quantum information processors based on electron spin qubits in electrostatically-defined quantum dots (QDs). Numerical calculations of charge stability diagrams are presented for a realist…
View article: Hamiltonian engineering with time-ordered evolution for unitary control of electron spins in semiconductor quantum dots
Hamiltonian engineering with time-ordered evolution for unitary control of electron spins in semiconductor quantum dots Open
We present a unitary control pulse design method for a scalable quantum computer architecture based on electron spins in lateral quantum dots. We employ simultaneous control of spin interactions and derive the functional forms of spin Hami…
View article: Stable electroluminescence in ambipolar dopant-free lateral p–n junctions
Stable electroluminescence in ambipolar dopant-free lateral p–n junctions Open
Dopant-free lateral p–n junctions in the GaAs/AlGaAs material system have attracted interest due to their potential use in quantum optoelectronics (e.g., optical quantum computers or quantum repeaters) and ease of integration with other co…
View article: Phase-Coherent Charge Transport through a Porphyrin Nanoribbon
Phase-Coherent Charge Transport through a Porphyrin Nanoribbon Open
Since the early days of quantum mechanics, it has been known that electrons behave simultaneously as particles and waves, and now quantum electronic devices can harness this duality. When devices are shrunk to the molecular scale, it is un…
View article: Stable electroluminescence in ambipolar dopant-free lateral p-n junctions
Stable electroluminescence in ambipolar dopant-free lateral p-n junctions Open
Dopant-free lateral p-n junctions in the GaAs/AlGaAs material system have attracted interest due to their potential use in quantum optoelectronics (e.g., optical quantum computers or quantum repeaters) and ease of integration with other co…
View article: Scalable Addressing Circuits for a Surface Code Silicon-based Quantum Computer
Scalable Addressing Circuits for a Surface Code Silicon-based Quantum Computer Open
A scalable circuit is designed to provide control signals for local and global operation of surface quantum error correction codes through a modular design of tiered switches controlled by demultiplexers. Critical power, performance, and a…
View article: Scalable Addressing Circuits for a Surface Code Silicon-based Quantum Computer
Scalable Addressing Circuits for a Surface Code Silicon-based Quantum Computer Open
A scalable circuit is designed to provide control signals for local and global operation of surface quantum error correction codes through a modular design of tiered switches controlled by demultiplexers. Critical power, performance, and a…
View article: Quantum Interference Enhances the Performance of Single-Molecule Transistors
Quantum Interference Enhances the Performance of Single-Molecule Transistors Open
An unresolved challenge facing electronics at a few-nm scale is that resistive channels start leaking due to quantum tunneling. This affects the performance of nanoscale transistors, with single-molecule devices displaying particularly low…
View article: Porphyrin-Fused Graphene Nanoribbons
Porphyrin-Fused Graphene Nanoribbons Open
Graphene nanoribbons (GNRs), nanometer-wide strips of graphene, are promising materials for fabricating electronic devices. Many GNRs have been reported, yet no scalable strategies are known for synthesizing GNRs with metal atoms and heter…
View article: Integrated Control Addressing Circuits for a Surface Code Quantum Computer in Silicon
Integrated Control Addressing Circuits for a Surface Code Quantum Computer in Silicon Open
Quantum computers require a coordinated operation on a large number of quantum bits (qubits), presenting considerable obstacles such as system integration on a large scale, individual qubits control with precision, and significant error co…
View article: Phase-Coherent Charge Transport through a Porphyrin Nanoribbon
Phase-Coherent Charge Transport through a Porphyrin Nanoribbon Open
Quantum interference in nano-electronic devices could lead to reduced-energy computing and efficient thermoelectric energy harvesting. When devices are shrunk down to the molecular level it is still unclear to what extent electron transmis…
View article: Charge-state dependent vibrational relaxation in a single-molecule junction
Charge-state dependent vibrational relaxation in a single-molecule junction Open
The interplay between nuclear and electronic degrees of freedom strongly influences molecular charge transport. Herein, we report on transport through a porphyrin dimer molecule, weakly coupled to graphene electrodes, that displays sequent…
View article: Observation and Manipulation of a Phase Separated State in a Charge Density Wave Material
Observation and Manipulation of a Phase Separated State in a Charge Density Wave Material Open
The 1T polytype of TaS2 has been studied extensively as a strongly correlated system. As 1T-TaS2 is thinned toward the 2D limit, its phase diagram shows significant deviations from that of the bulk material. Optoelectronic maps of ultrathi…
View article: Effects of biased and unbiased illuminations on two-dimensional electron gases in dopant-free GaAs/AlGaAs
Effects of biased and unbiased illuminations on two-dimensional electron gases in dopant-free GaAs/AlGaAs Open
Illumination is performed at low temperature on dopant-free two-dimensional electron gases (2DEGs) of varying depths, under unbiased (gates grounded) and biased (gates at a positive or negative voltage) conditions. Unbiased illuminations i…