236 citations · 1k across the 21 of their papers we have counts for
21 papers
A Quantum Dynamics Tutorial: Visualising Dynamical Decoupling Sequences on the Bloch Sphere
Charlie J. Patrickson, Isaac Bailey, Antonio Orazzo +2
Dynamical decoupling protocols provide a versatile toolbox for robust control of quantum systems, suppressing noise that would otherwise limit their performance. This tutorial aims…
Defects in hexagonal boron nitride for quantum technologies
Tobias Vogl, Viktor Ivády, Isaac J. Luxmoore +1
Atomic defects in solid-state materials are building blocks for future quantum technologies, such as quantum communication networks, computers, and sensors. Until recently, a handf…
Coherent control of nitrogen nuclear spins via the V-center in hexagonal boron nitride
Adalbert Tibiássy, Charlie J. Patrickson, Thomas Poirier +4
Charged boron vacancies (V) in hexagonal boron nitride (hBN) have emerged as a promising platform for quantum nanoscale sensing and imaging. While these primarily invo…
Continuous drive heterodyne microwave sensing with spin qubits in hexagonal boron nitride
Charlie J. Patrickson, Valentin Haemmerli, Shi Guo +2
Quantum sensors that use solid state spin defects have emerged as effective probes of weak alternating magnetic signals. By recording the phase of a signal relative to an external…
High Frequency Magnetometry with an Ensemble of Spin Qubits in Hexagonal Boron Nitride
Charlie J. Patrickson, Simon Baber, Blanka B. Gaál +2
Sensors based on spin qubits in 2D crystals offer the prospect of nanoscale sensing volumes, where the close proximity of the sensor and source could provide access to otherwise in…
Inverse Design of Whispering-gallery Nanolasers with Tailored Beam Shape and Polarization
Iago Diez, Andrey Krysa, Isaac J. Luxmoore
Control over the shape and polarization of the beam emitted by a laser source is important in applications such as optical communications, optical manipulation and high-resolution…
Room temperature coherent control of protected qubit in hexagonal boron nitride
Andrew J. Ramsay, Reza Hekmati, Charlie J. Patrickson +4
Spin defects in foils of hexagonal boron nitride are an attractive platform for magnetic field imaging, since the probe can be placed in close proximity to the target. However, as…
Excited State Spectroscopy of Boron Vacancy Defects in Hexagonal Boron Nitride using Time-Resolved Optically Detected Magnetic Resonance
Simon Baber, Ralph N. E. Malein, Prince Khatri +5
We report optically detected magnetic resonance (ODMR) measurements of an ensemble of spin-1 negatively charged boron vacancies in hexagonal boron nitride. The photoluminescence de…
Stimulated Emission Depletion Microscopy with Color Centers in Hexagonal Boron Nitride
Prince Khatri, Ralph Nicholas Edward Malein, Andrew J. Ramsay +1
Stimulated emission depletion, or STED microscopy is a well-established super-resolution technique, but is ultimately limited by the chosen flourophore. Here we demonstrate STED mi…
Stimulated emission depletion spectroscopy of color centers in hexagonal boron nitride
Ralph N. E. Malein, Prince Khatri, Andrew J. Ramsay +1
We demonstrate the use of Stimulated Emission Depletion (STED) spectroscopy to map the electron-optical-phonon sideband of the ground state of the radiative transition of color cen…
Optical control of the charge state of color centers in hexagonal boron nitride
Prince Khatri, Andrew J. Ramsay, Ralph N. E. Malein +2
We report on multicolor excitation experiments with color centers in hexagonal boron nitride at cryogenic temperatures. We demonstrate controllable optical switching between bright…
Phonon sidebands of color centers in hexagonal boron nitride
P. Khatri, I. J. Luxmoore, A. J. Ramsay
Low temperature photoluminescence spectra of a color center in hexagonal boron nitride are analyzed. The acoustic phonon sideband can be described by a deformation coupling proport…
Highly tunable hybrid metamaterials employing split-ring resonators strongly coupled to graphene surface plasmons
Peter Q. Liu, Isaac J. Luxmoore, Sergey A. Mikhailov +4
Metamaterials and plasmonics are powerful tools for unconventional manipulation and harnessing of light. Metamaterials can be engineered to possess intriguing properties lacking in…
Strong coupling in the far-infrared between graphene plasmons and the surface optical phonons of silicon dioxide
Isaac. J. Luxmoore, Choon How Gan, Peter Q. Liu +4
We study plasmonic resonances in electrostatically gated graphene nanoribbons on silicon dioxide substrates. Absorption spectra are measured in the mid-far infrared and reveal mult…
Waveguide-Coupled Photonic Crystal Cavity for Quantum Dot Spin Readout
R. J. Coles, N. Prtljaga, B. Royall +3
We present a waveguide-coupled photonic crystal H1 cavity structure in which the orthogonal dipole modes couple to spatially separated photonic crystal waveguides. Coupling of each…
III-V quantum light source and cavity-QED on Silicon
Isaac J. Luxmoore, Romain Toro, Osvaldo Del Pozo-Zamudio +8
Non-classical light sources offer a myriad of possibilities in fundamental science and applications including quantum cryptography and quantum lithography. Single photons can encod…
Effect of the GaAsP shell on optical properties of self-catalyzed GaAs nanowires grown on silicon
O. D. D. Couto, D. Sercombe, J. Puebla +9
We realize growth of self-catalyzed core-shell GaAs/GaAsP nanowires (NWs) on Si substrates using molecular-beam epitaxy. Transmission electron microscopy (TEM) of single GaAs/GaAsP…
Interfacing a quantum dot spin with a photonic circuit
Isaac J. Luxmoore, Nicholas A. Wasley, Andrew J. Ramsay +7
A scalable optical quantum information processor is likely to be a waveguide circuit with integrated sources, detectors, and either deterministic quantum-logic or quantum memory el…
Fast preparation of single hole spin in InAs/GaAs quantum dot in Voigt geometry magnetic field
T. M. Godden, J. H. Quilter, A. J. Ramsay +6
The preparation of a coherent heavy-hole spin via ionization of a spin-polarized electron-hole pair in an InAs/GaAs quantum dot in a Voigt geometry magnetic field is investigated.…
Charge control in InP/GaInP single quantum dots embedded in Schottky diodes
O. D. D. Couto, J. Puebla, E. A. Chekhovich +6
We demonstrate control by applied electric field of the charge states in single self-assembled InP quantum dots placed in GaInP Schottky structures grown by metalorganic vapor phas…
Coherent optical control of the spin of a single hole in a quantum dot
T. M. Godden, J. H. Quilter, A. J. Ramsay +7
We demonstrate coherent optical control of a single hole spin confined to an InAs/GaAs quantum dot. A superposition of hole spin states is created by fast (10-100 ps) dissociation…