Benjamin J. Lawrie
YOU?
Author Swipe
View article: Defect Engineering in Large‐Scale CVD‐Grown Hexagonal Boron Nitride: Formation, Spectroscopy, and Spin Relaxation Dynamics
Defect Engineering in Large‐Scale CVD‐Grown Hexagonal Boron Nitride: Formation, Spectroscopy, and Spin Relaxation Dynamics Open
Recently, numerous techniques have been reported for generating optically active defects in exfoliated hexagonal boron nitride (hBN), which hold transformative potential for quantum photonic devices. However, achieving on‐demand generation…
View article: Vertically Self-Oriented, Ultrafast 1D ZnO:Li Nanorods as Scintillators for Thermal Neutron Detection
Vertically Self-Oriented, Ultrafast 1D ZnO:Li Nanorods as Scintillators for Thermal Neutron Detection Open
Detection of special nuclear materials (SNMs) is of vital importance in the prevention of nuclear terrorism and to secure states' national security. Neutron detection is a particularly useful tool to identify SNM, and neutron-sensitive sci…
View article: Anticipating Decoherence: a Predictive Framework for Enhancing Coherence in Quantum Emitters
Anticipating Decoherence: a Predictive Framework for Enhancing Coherence in Quantum Emitters Open
Large-scale quantum systems require optical coherence between distant quantum devices, necessitating spectral indistinguishability. Scalable solid-state platforms offer promising routes to this goal. However, environmental disorders, inclu…
View article: Probing the Nanoscale Excitonic Landscape and Quantum Confinement of Excitons in Gated Monolayer Semiconductors
Probing the Nanoscale Excitonic Landscape and Quantum Confinement of Excitons in Gated Monolayer Semiconductors Open
Engineering and probing excitonic properties at the nanoscale remains a central challenge in quantum photonics and optoelectronics. While exciton confinement via electrical control and strain engineering has been demonstrated in 2D semicon…
View article: Probing Spin Defects via Single Spin Relaxometry
Probing Spin Defects via Single Spin Relaxometry Open
Spin defects in solids offer promising platforms for quantum sensing and memory due to their long coherence times and compatibility with quantum networks. Here, we integrate a single nitrogen vacancy (NV) center in diamond with scanning pr…
View article: Programmable phase selection between altermagnetic and non-centrosymmetric polymorphs of MnTe on InP via molecular beam epitaxy
Programmable phase selection between altermagnetic and non-centrosymmetric polymorphs of MnTe on InP via molecular beam epitaxy Open
Phase selecting nearly degenerate crystalline polymorphs during epitaxial growth can be challenging yet is critical to targeting physical properties for specific applications. Here, we establish how phase selectivity of altermagnetic and n…
View article: Sub-Terahertz Spin Relaxation Dynamics of Boron-Vacancy Centers in Hexagonal Boron Nitride
Sub-Terahertz Spin Relaxation Dynamics of Boron-Vacancy Centers in Hexagonal Boron Nitride Open
Quantum sensors based on spin-defect relaxation have become powerful tools for detecting faint magnetic signals, yet their operation has remained largely confined to low magnetic fields and gigahertz frequencies. Extending such sensors int…
View article: Synergistic effects of Al, Ga, and In doping on ZnO nanorod arrays grown via citrate-assisted hydrothermal technique for highly efficient and fast scintillator screens
Synergistic effects of Al, Ga, and In doping on ZnO nanorod arrays grown via citrate-assisted hydrothermal technique for highly efficient and fast scintillator screens Open
To be used as efficient alpha particle scintillator in the fields of nuclear security, nuclear nonproliferation and high-energy physics, scintillator screens must have high light output and fast decay properties. While there has been a gre…
View article: Defect enhancement of Er emission in single crystal Er2O3
Defect enhancement of Er emission in single crystal Er2O3 Open
We report observations of crystal defect induced modifications in the laser-excited Er3+ photoluminescence spectra of single-crystal Er2O3 thin films. These include marked enhancement of transition intensities known to be weak or nonexiste…
View article: Quantum enhanced magneto-optical microscopy and spectroscopy
Quantum enhanced magneto-optical microscopy and spectroscopy Open
A system comprising a nonlinear medium (NLM), an optical transduction module, a dual homodyne detector and a processor is provided. The NLM receives at least a pump beam and issues the pump, probe and conjugate beams, where the beams are l…
View article: Ferroelastic Domain Induced Electronic Modulation in Halide Perovskites
Ferroelastic Domain Induced Electronic Modulation in Halide Perovskites Open
Lead halide perovskites have emerged as promising materials for optoelectronic applications due to their exceptional properties. In the all-inorganic CsPbBr3 perovskites, ferroelastic domains formed during phase transitions enhance bulk tr…
View article: Raman Fingerprints of Phase Transitions and Ferroic Couplings in Van der Waals Material CuCrP$_2$S$_6$
Raman Fingerprints of Phase Transitions and Ferroic Couplings in Van der Waals Material CuCrP$_2$S$_6$ Open
CuCrP$_2$S$_6$ (CCPS), a type-II multiferroic material, exhibits unique phase transitions involving ferroelectric, antiferroelectric, and antiferromagnetic ordering. In this study, we conduct a comprehensive investigation on the intricate …
View article: Non-perturbative cathodoluminescence microscopy of beam-sensitive materials
Non-perturbative cathodoluminescence microscopy of beam-sensitive materials Open
Cathodoluminescence microscopy is now a well-established and powerful tool for probing the photonic properties of nanoscale materials, but in many cases, nanophotonic materials are easily damaged by the electron-beam doses necessary to ach…
View article: Spontaneous Formation of Single-Crystalline Spherulites in a Chiral 2D Hybrid Perovskite
Spontaneous Formation of Single-Crystalline Spherulites in a Chiral 2D Hybrid Perovskite Open
In two-dimensional (2D) chiral metal-halide perovskites (MHPs), chiral organic spacers induce structural chirality and chiroptical properties in the metal-halide sublattice. This structural chirality enables reversible crystalline-glass ph…
View article: Coherent population trapping and spin relaxation of a silicon vacancy center in diamond at millikelvin temperatures
Coherent population trapping and spin relaxation of a silicon vacancy center in diamond at millikelvin temperatures Open
Here, we report experimental studies of coherent population trapping (CPT) and spin relaxation in a temperature range 4 K–100 mK in a silicon vacancy (SiV) center subject to a transverse magnetic field. The spin linewidth, which is determi…
View article: Nanoscale Magnetic Ordering Dynamics in a High Curie Temperature Ferromagnet
Nanoscale Magnetic Ordering Dynamics in a High Curie Temperature Ferromagnet Open
Thermally driven transitions between ferromagnetic and paramagnetic phases are characterized by critical behavior with divergent susceptibilities, long-range correlations, and spin dynamics that can span kHz to GHz scales as the material a…
View article: Impact of Halogen Groups on the Properties of PEA‐Based 2D Pb–Sn Halide Perovskites
Impact of Halogen Groups on the Properties of PEA‐Based 2D Pb–Sn Halide Perovskites Open
Tuning broad emission in 2D Pb–Sn halide perovskites (HPs) is essential for advancing optoelectronic applications, particularly for color‐tunable and white‐light‐emitting devices. This broad emission is linked to structural factors, such a…
View article: Low-dimensional solid-state single-photon emitters
Low-dimensional solid-state single-photon emitters Open
Solid-state single-photon emitters (SPEs) are attracting significant attention as fundamental components in quantum computing, communication, and sensing. Low-dimensional materials-based SPEs (LD-SPEs) have drawn particular interest due to…
View article: Tailoring Molecular Space to Navigate Phase Complexity in Cs‐Based Quasi‐2D Perovskites via Gated‐Gaussian‐Driven High‐Throughput Discovery
Tailoring Molecular Space to Navigate Phase Complexity in Cs‐Based Quasi‐2D Perovskites via Gated‐Gaussian‐Driven High‐Throughput Discovery Open
Cesium‐based quasi‐2D halide perovskites (HPs) offer promising functionalities and low‐temperature manufacturability, suited to stable tandem photovoltaics. However, the chemical interplays between the molecular spacers and the inorganic b…
View article: Non-perturbative cathodoluminescence microscopy of beam-sensitive materials
Non-perturbative cathodoluminescence microscopy of beam-sensitive materials Open
Cathodoluminescence microscopy is now a well-established and powerful tool for probing the photonic properties of nanoscale materials, but in many cases, nanophotonic materials are easily damaged by the electron-beam doses necessary to ach…
View article: Energy level structure of diamond silicon vacancy centers in an off-axis magnetic field
Energy level structure of diamond silicon vacancy centers in an off-axis magnetic field Open
We report the development of an experimental approach that can characterize the energy level structure of an individual silicon vacancy (SiV) center in a magnetic field and extract the key parameters for the energy level structure. This ap…
View article: Nanoscale control over single vortex motion in an unconventional superconductor
Nanoscale control over single vortex motion in an unconventional superconductor Open
To realize braiding of vortex lines and understand the basic properties of the energy landscape for vortex motion, precise manipulation of superconducting vortices on the nanoscale is required. Here, we reveal that a localized trapping pot…
View article: Low-Dimensional Solid-State Single-Photon Emitters
Low-Dimensional Solid-State Single-Photon Emitters Open
Solid-state single-photon emitters (SPEs) are attracting significant attention as fundamental components in quantum computing, communication, and sensing. Low-dimensional materials-based SPEs (LD-SPEs) have drawn particular interest due to…
View article: Nanoscale magnetic ordering dynamics in a high Curie temperature ferromagnet
Nanoscale magnetic ordering dynamics in a high Curie temperature ferromagnet Open
Thermally driven transitions between ferromagnetic and paramagnetic phases are characterized by critical behavior with divergent susceptibilities, long-range correlations, and spin dynamics that can span kHz to GHz scales as the material a…
View article: Telecom-wavelength Single-photon Emitters in Multi-layer InSe
Telecom-wavelength Single-photon Emitters in Multi-layer InSe Open
The development of robust and efficient single photon emitters (SPEs) at telecom wavelengths is critical for advancements in quantum information science. Two-dimensional (2D) materials have recently emerged as promising sources for SPEs, o…
View article: Coherent population trapping and spin relaxation of a silicon vacancy center in diamond at mK temperatures
Coherent population trapping and spin relaxation of a silicon vacancy center in diamond at mK temperatures Open
We report experimental studies of coherent population trapping and spin relaxation in a temperature range between 4 K and 100 mK in a silicon vacancy (SiV) center subject to a transverse magnetic field. Near and below 1 K, phonon-induced s…
View article: Tailoring Molecular Space to Navigate Phase Complexity in Cs-based Quasi-2D Perovskites via Gated-Gaussian-Driven High-Throughput Discovery
Tailoring Molecular Space to Navigate Phase Complexity in Cs-based Quasi-2D Perovskites via Gated-Gaussian-Driven High-Throughput Discovery Open
Cesium-based quasi-two-dimensional (2D) halide perovskites (HPs) offer promising functionalities and low-temperature manufacturability, which are suited to stable tandem photovoltaics (PVs). However, the chemical interplays between the mol…
View article: Decoding the Broadband Emission of 2D Pb‐Sn Halide Perovskites through High‐Throughput Exploration
Decoding the Broadband Emission of 2D Pb‐Sn Halide Perovskites through High‐Throughput Exploration Open
Unlike single‐component 2D metal halide perovskites (MHPs) exhibiting sharp excitonic photoluminescence (PL), a broadband PL emerges in mixed Pb‐Sn 2D lattices. Two physical models –self‐trapped exciton and defect‐induced Stokes‐shift – ar…
View article: Parallel Quantum-Enhanced Sensing
Parallel Quantum-Enhanced Sensing Open
Quantum metrology takes advantage of quantum correlations to enhance the sensitivity of sensors and measurement techniques beyond their fundamental classical limit, given by the shot-noise limit. The use of both temporal and spatial correl…