ARC CENTRE OF EXCELLENCE FOR QUANTUM COMPUTATION AND COMMUNICATION TECHNOLOGY (NON-LEAD) HOLLENBERG (ARC FUNDING)

Temperature and angle dependent magnetic imaging of biological iron nanoparticles using quantum diamond microscopy

RW de Gille, AJ Healey, IO Robertson, LT Hall, J-P Tetienne, EP Malkemper, DA Keays, LCL Hollenberg, DA Simpson

2023-01-16

Quantum diamond microscopy is an emerging versatile technique for studying the magnetic properties of materials. It has been appli..

Observing Er3 Sites in Si With an In Situ Single-Photon Detector

Ian R Berkman, Alexey Lyasota, Gabriele G de Boo, John G Bartholomew, Brett C Johnson, Jeffrey C McCallum, Bin-Bin Xu, Shouyi Xie, Rose L Ahlefeldt, Matthew J Sellars, Chunming Yin, Sven Rogge

2023-01-12

We present a flexible method to study the optical properties of an Er3+ ensemble in Si accessed via resonant excitation and in sit..

Imaging current control of magnetization in Fe3GeTe2 with a widefield nitrogen-vacancy microscope

Islay O Robertson, Cheng Tan, Sam C Scholten, Alexander J Healey, Gabriel J Abrahams, Guolin Zheng, Aurelien Manchon, Lan Wang, Jean-Philippe Tetienne

2023-01-01

<jats:title>Abstract</jats:title> <jats:p>Van der Waals (vdW) magnets are appealing candidates for realising spintr..

Silicon-Aluminum Phase-Transformation-Induced Superconducting Rings

Brett C Johnson, Michael Stuiber, Daniel L Creedon, Manjith Bose, Amanuel Berhane, Laurens Henry Willems van Beveren, Sergey Rubanov, Jared H Cole, Vincent Mourik, Alexander R Hamilton, Timothy L Duty, Jeffrey Colin McCallum

2022-12-27

The development of devices that exhibit both superconducting and semiconducting properties is an important endeavor for emerging q..

Untrained Physically Informed Neural Network for Image Reconstruction of Magnetic Field Sources

AEE Dubois, DA Broadway, A Stark, MA Tschudin, AJ Healey, SD Huber, J-P Tetienne, E Greplova, P Maletinsky

2022-12-26

The prediction of measurement outcomes from an underlying structure often follows directly from fundamental physical principles. H..

Reproducibility and Gap Control of Superconducting Flux Qubits

T Chang, I Holzman, T Cohen, BC Johnson, DN Jamieson, M Stern

2022-12-20

Superconducting flux qubits are promising candidates for the physical realization of a scalable quantum processor. Indeed, these c..

Integration of Black Phosphorus Photoconductors with Lithium Niobate on Insulator Photonics

Shifan Wang, Robert James Chapman, Brett C Johnson, Inna Krasnokutska, Jean-Luc J Tambasco, Kibret Messalea, Alberto Peruzzo, James Bullock

2022-11-20

Photodetectors formed with layered two-dimensional (2D) materials have shown significant potential for integration with photonic c..

Quasiparticle excitations in a one-dimensional interacting topological insulator: Application for dopant-based quantum simulation

David Mikhail, Benoit Voisin, Dominique Didier St Medar, Gilles Buchs, Sven Rogge, Stephan Rachel

2022-11-08

We study the effects of electron-electron interactions on the charge excitation spectrum of the spinful Su-Schrieffer-Heeger (SSH)..

Beating the Thermal Limit of Qubit Initialization with a Bayesian Maxwell?s Demon

Mark A Johnson, Mateusz T Madzik, Fay E Hudson, Kohei M Itoh, Alexander M Jakob, David N Jamieson, Andrew Dzurak, Andrea Morello

2022-10-25

Fault-tolerant quantum computing requires initializing the quantum register in a well-defined fiducial state. In solid-state syste..

Interactions between Fermi polarons in monolayer WS2

Jack B Muir, Jesper Levinsen, Stuart K Earl, Mitchell A Conway, Jared H Cole, Matthias Wurdack, Rishabh Mishra, David J Ing, Eliezer Estrecho, Yuerui Lu, Dmitry K Efimkin, Jonathan O Tollerud, Elena A Ostrovskaya, Meera M Parish, Jeffrey A Davis

2022-10-18

Interactions between quasiparticles are of fundamental importance and ultimately determine the macroscopic properties of quantum m..

Near-Surface Electrical Characterization of Silicon Electronic Devices Using Focused keV-Range Ions

SG Robson, P Raecke, AM Jakob, N Collins, HR Firgau, V Schmitt, V Mourik, A Morello, E Mayes, D Spemann, DN Jamieson

2022-09-14

The demonstration of universal quantum logic operations near the fault-tolerance threshold has established ion-implanted near-surf..

Varied Magnetic Phases in a van der Waals Easy-Plane Antiferromagnet Revealed by Nitrogen-Vacancy Center Microscopy

Alexander J Healey, Sharidya Rahman, Sam C Scholten, Islay O Robertson, Gabriel J Abrahams, Nikolai Dontschuk, Boqing Liu, Lloyd CL Hollenberg, Yuerui Lu, Jean-Philippe Tetienne

2022-07-22

Interest in van der Waals materials often stems from a desire to miniaturize existing technologies by exploiting their intrinsic l..

Imaging Current Paths in Silicon Photovoltaic Devices with a Quantum Diamond Microscope

SC Scholten, GJ Abrahams, BC Johnson, AJ Healey, IO Robertson, DA Simpson, A Stacey, S Onoda, T Ohshima, TC Kho, J Ibarra Michel, J Bullock, LCL Hollenberg, J-P Tetienne

2022-07-18

Magnetic imaging with nitrogen-vacancy centers in diamond, also known as quantum diamond microscopy, has emerged as a useful techn..

Observing hyperfine interactions of NV- centers in diamond in an advanced quantum teaching lab

Yang Yang, Hyma H Vallabhapurapu, Vikas K Sewani, Maya Isarov, Hannes R Firgau, Chris Adambukulam, Brett C Johnson, Jarryd J Pla, Arne Laucht

2022-07-01

The negatively charged nitrogen-vacancy (NV-) center in diamond is a model quantum system for university teaching labs due to its ..

Silicon Carbide Photonics Bridging Quantum Technology

Stefania Castelletto, Alberto Peruzzo, Cristian Bonato, Brett C Johnson, Marina Radulaski, Haiyan Ou, Florian Kaiser, Joerg Wrachtrup

2022-05-18

In the last two decades, bulk, homoepitaxial, and heteroepitaxial growth of silicon carbide (SiC) has witnessed many advances, giv..

Characterization methods for defects and devices in silicon carbide

ME Bathen, CT-K Lew, J Woerle, C Dorfer, U Grossner, S Castelletto, BC Johnson

2022-04-14

Significant progress has been achieved with silicon carbide (SiC) high power electronics and quantum technologies, both drawing up..

Single site optical spectroscopy of coupled Er3 ion pairs in silicon

G Hu, RL Ahlefeldt, GG De Boo, A Lyasota, BC Johnson, JC McCallum, MJ Sellars, C Yin, S Rogge

2022-03-09

Individual optical emitters coupled via coherent interactions are attractive qubits for quantum communications applications. Here,..

Creation of nitrogen-vacancy centers in chemical vapor deposition diamond for sensing applications

T Luo, L Lindner, J Langer, V Cimalla, X Vidal, F Hahl, C Schreyvogel, S Onoda, S Ishii, T Ohshima, D Wang, DA Simpson, BC Johnson, M Capelli, R Blinder, J Jeske

2022-03-01

The nitrogen-vacancy (NV) center in diamond is a promising quantum system for magnetometry applications exhibiting optical readout..

Framework for Donor-Qubit Spatial Metrology in Silicon with Depths Approaching the Bulk Limit

Maxwell T West, Muhammad Usman

2022-02-25

Impurities in silicon are fundamental to a variety of modern nanoscale technologies working in both classical and quantum regimes ..

Precision tomography of a three-qubit donor quantum processor in silicon

Mateusz T Madzik, Serwan Asaad, Akram Youssry, Benjamin Joecker, Kenneth M Rudinger, Erik Nielsen, Kevin C Young, Timothy J Proctor, Andrew D Baczewski, Arne Laucht, Vivien Schmitt, Fay E Hudson, Kohei M Itoh, Alexander M Jakob, Brett C Johnson, David N Jamieson, Andrew S Dzurak, Christopher Ferrie, Robin Blume-Kohout, Andrea Morello

2022-01-20

Nuclear spins were among the first physical platforms to be considered for quantum information processing1,2, because of their exc..

Time-Resolved Photoionization Detection of a Single Er3 Ion in Silicon

Guangchong Hu, Gabriele G de Boo, Brett Cameron Johnson, Jeffrey Colin McCallum, Matthew J Sellars, Chunming Yin, Sven Rogge

2022-01-03

The detection of charge trap ionization induced by resonant excitation enables spectroscopy on single Er3+ ions in silicon nanotra..

An integrated widefield probe for practical diamond nitrogen-vacancy microscopy

GJ Abrahams, SC Scholten, AJ Healey, IO Robertson, N Dontschuk, SQ Lim, BC Johnson, DA Simpson, LCL Hollenberg, J-P Tetienne

2021-12-20

The widefield diamond nitrogen-vacancy (NV) microscope is a powerful instrument for imaging magnetic fields. However, a key limita..

Deterministic Shallow Dopant Implantation in Silicon with Detection Confidence Upper-Bound to 99.85% by Ion-Solid Interactions

Alexander M Jakob, Simon G Robson, Vivien Schmitt, Vincent Mourik, Matthias Posselt, Daniel Spemann, Brett C Johnson, Hannes R Firgau, Edwin Mayes, Jeffrey C McCallum, Andrea Morello, David N Jamieson

2021-11-12

Silicon chips containing arrays of single dopant atoms can be the material of choice for classical and quantum devices that exploi..

Infrared erbium photoluminescence enhancement in silicon carbide nano-pillars

RA Parker, N Dontschuk, S- Sato, CT-K Lew, P Reineck, A Nadarajah, T Ohshima, BC Gibson, S Castelletto, JC McCallum, BC Johnson

2021-10-14

Color centers that emit light at telecommunication wavelengths are promising candidates for future quantum technologies. A pressin..

Influence of sample momentum space features on scanning tunnelling microscope measurements

Maxwell T West, Muhammad Usman

2021-09-17

Theoretical understanding of scanning tunnelling microscopy (STM) measurements involve electronic structure details of the STM tip..

Visible to Short-Wave Infrared Photodetectors Based on ZrGeTe4 van der Waals Materials

Wei Yan, Brett C Johnson, Sivacarendran Balendhran, Jasper Cadusch, Di Yan, Jesus Ibarra Michel, Shifan Wang, Tian Zheng, Kenneth Crozier, James Bullock

2021-09-15

The self-terminated, layered structure of van der Waals materials introduces fundamental advantages for infrared (IR) optoelectron..

Donor-based qubits for quantum computing in silicon

JC McCallum, BC Johnson, T Botzem

2021-09-01

Spin-qubits based on impurities such as phosphorus in silicon (Si) have attractive attributes for the development of quantum compu..

Fluorescent Silicon Carbide Nanoparticles

Mitchell O de Vries, Shin-ichiro Sato, Takeshi Ohshima, Brant C Gibson, Jean-Marie Bluet, Stefania Castelletto, Brett C Johnson, Philipp Reineck

2021-07-17

Silicon carbide (SiC) is an indirect wide band gap semiconductor that is utilized in many industrial applications due to its extre..

Polarization Transfer to External Nuclear Spins Using Ensembles of Nitrogen-Vacancy Centers

AJ Healey, LT Hall, GAL White, T Teraji, M-A Sani, F Separovic, J-P Tetienne, LCL Hollenberg

2021-05-24

The nitrogen-vacancy (N-V) center in diamond has emerged as a candidate to noninvasively hyperpolarize nuclear spins in molecular ..

Recent progress in atomistic modelling and simulations of donor spin qubits in silicon

Muhammad Usman

2021-04-16

Electron or nuclear spins associated with dopant atoms, such as phosphorus impurities in silicon (Si:P), have been shown to form e..

Ultrashallow Junction Electrodes in Low-Loss Silicon Microring Resonators

Bin-Bin Xu, Gabriele G de Boo, Brett C Johnson, Milos Rancic, Alvaro Casas Bedoya, Blair Morrison, Jeffrey C McCallum, Benjamin J Eggleton, Matthew J Sellars, Chunming Yin, Sven Rogge

2021-04-07

Electrodes in close proximity to an active area of a device are required for sufficient electrical control. The integration of suc..

Prospects for nuclear spin hyperpolarization of molecular samples using nitrogen-vacancy centers in diamond

J-P Tetienne, LT Hall, AJ Healey, GAL White, M-A Sani, F Separovic, LCL Hollenberg

2021-01-21

After initial proof-of-principle demonstrations, optically pumped nitrogen-vacancy (NV) centers in diamond have been proposed as a..

High-resolution Rutherford backscattering spectrometry with an optimised solid-state detector

SG Robson, AM Jakob, D Holmes, SQ Lim, BC Johnson, DN Jamieson

2021-01-15

Rutherford Backscattering Spectrometry (RBS) is a powerful ion beam analysis technique in frequent use within materials science. T..

Conditional quantum operation of two exchange-coupled single-donor spin qubits in a MOS-compatible silicon device

Mateusz T Madzik, Arne Laucht, Fay E Hudson, Alexander M Jakob, Brett C Johnson, David N Jamieson, Kohei M Itoh, Andrew S Dzurak, Andrea Morello

2021-01-08

Silicon nanoelectronic devices can host single-qubit quantum logic operations with fidelity better than 99.9%. For the spins of an..

Isotopic enrichment of silicon by high fluence Si-28(-) ion implantation

D Holmes, BC Johnson, C Chua, B Voisin, S Kocsis, S Rubanov, SG Robson, JC McCallum, DR McCamey, S Rogge, DN Jamieson

2021-01-08

Spins in the "semiconductor vacuum"of silicon-28 (Si28) are suitable qubit candidates due to their long coherence times. An isotop..

Coherent control of NV- centers in diamond in a quantum teaching lab

Vikas K Sewani, Hyma H Vallabhapurapu, Yang Yang, Hannes R Firgau, Chris Adambukulam, Brett C Johnson, Jarryd J Pla, Arne Laucht

2020-12-01

The room temperature compatibility of the negatively charged nitrogen-vacancy (NV-) center in diamond makes it the ideal quantum s..

Valley interference and spin exchange at the atomic scale in silicon

B Voisin, J Bocquel, A Tankasala, M Usman, J Salfi, R Rahman, MY Simmons, LCL Hollenberg, S Rogge

2020-11-30

Tunneling is a fundamental quantum process with no classical equivalent, which can compete with Coulomb interactions to give rise ..

Donor Spins in Silicon for Quantum Technologies

Andrea Morello, Jarryd J Pla, Patrice Bertet, David N Jamieson

2020-11-24

Dopant atoms are ubiquitous in semiconductor technologies, providing the tailored electronic properties that underpin the modern d..

Comparison of different methods of nitrogen-vacancy layer formation in diamond for wide-field quantum microscopy

AJ Healey, A Stacey, BC Johnson, DA Broadway, T Teraji, DA Simpson, J-P Tetienne, LCL Hollenberg

2020-10-29

Thin layers of near-surface nitrogen-vacancy (NV) defects in diamond substrates are the workhorse of NV-based wide-field magnetic ..

High-resolution spectroscopy of individual erbium ions in strong magnetic fields

Gabriele G de Boo, Chunming Yin, Milos Rancic, Brett C Johnson, Jeffrey C McCallum, Matthew J Sellars, Sven Rogge

2020-10-23

In this paper, we use electrically detected optical excitation spectroscopy of individual erbium ions in silicon to determine thei..

Investigation of charge carrier trapping in H-terminated diamond devices

CT-K Lew, N Dontschuk, DA Broadway, J-P Tetienne, JC McCallum, LCL Hollenberg, BC Johnson

2020-10-05

Surfaces and interfaces can dominate charge carrier transport dynamics in electronic devices, impeding realization of a material's..

Imaging Domain Reversal in an Ultrathin Van der Waals Ferromagnet

David A Broadway, Sam C Scholten, Cheng Tan, Nikolai Dontschuk, Scott E Lillie, Brett C Johnson, Guolin Zheng, Zhenhai Wang, Artem R Oganov, Shangjie Tian, Chenghe Li, Hechang Lei, Lan Wang, Lloyd CL Hollenberg, Jean-Philippe Tetienne

2020-10-01

The recent isolation of 2D van der Waals magnetic materials has uncovered rich physics that often differs from the magnetic behavi..

Interplay between geometric and dynamic phases in a single-spin system

AA Wood, K Streltsov, RM Goldblatt, MB Plenio, LCL Hollenberg, RE Scholten, AM Martin

2020-09-15

We use a combination of microwave fields and free precession to drive the spin of a nitrogen-vacancy (NV) center in diamond on dif..

Improved Current Density and Magnetization Reconstruction Through Vector Magnetic Field Measurements

DA Broadway, SE Lillie, SC Scholten, D Rohner, N Dontschuk, P Maletinsky, J-P Tetienne, LCL Hollenberg

2020-08-26

Stray magnetic fields contain significant information about the electronic and magnetic properties of condensed matter systems. Fo..

Scanned Single-Electron Probe inside a Silicon Electronic Device

Kevin SH Ng, Benoit Voisin, Brett C Johnson, Jeffrey C McCallum, Joe Salfi, Sven Rogge

2020-08-25

Solid-state devices can be fabricated at the atomic scale, with applications ranging from classical logic to current standards and..

Epitaxial Formation of SiC on (100) Diamond

Alexander Tsai, Alireza Aghajamali, Nikolai Dontschuk, Brett C Johnson, Muhammad Usman, Alex K Schenk, Michael Sear, Christopher I Pakes, Lloyd CL Hollenberg, Jeffrey C McCallum, Sergey Rubanov, Anton Tadich, Nigel A Marks, Alastair Stacey

2020-07-28

We demonstrate locally the coherent formation of silicon carbide (SiC) on diamond, a rare example of heteroepitaxy with a lattice ..

Engineering long spin coherence times of spin-orbit qubits in silicon

Takashi Kobayashi, Joseph Salfi, Cassandra Chua, Joost van der Heijden, Matthew G House, Dimitrie Culcer, Wayne D Hutchison, Brett C Johnson, Jeff C McCallum, Helge Riemann, Nikolay Abrosimov, Peter Becker, Hans-Joachim Pohl, Michelle Y Simmons, Sven Rogge

2020-07-20

Electron-spin qubits have long coherence times suitable for quantum technologies. Spin–orbit coupling promises to greatly improve ..

Controllable freezing of the nuclear spin bath in a single-atom spin qubit

Mateusz T Madzik, Thaddeus D Ladd, Fay E Hudson, Kohei M Itoh, Alexander M Jakob, Brett C Johnson, Jeffrey C McCallum, David N Jamieson, Andrew S Dzurak, Arne Laucht, Andrea Morello

2020-07-01

The quantum coherence and gate fidelity of electron spin qubits in semiconductors are often limited by nuclear spin fluctuations. ..

Toward understanding and optimizing Au-hyperdoped Si infrared photodetectors

SQ Lim, CT-K Lew, PK Chow, JM Warrender, JS Williams, BC Johnson

2020-06-01

Au-hyperdoped Si absorbs near-infrared (NIR) light and recent efforts have successfully produced Si-based NIR photodetectors based..

Enhanced Widefield Quantum Sensing with Nitrogen-Vacancy Ensembles Using Diamond Nanopillar Arrays

Daniel J McCloskey, Nikolai Dontschuk, David A Broadway, Athavan Nadarajah, Alastair Stacey, Jean-Philippe Tetienne, Lloyd CL Hollenberg, Steven Prawer, David A Simpson

2020-03-18

Surface micro- and nano-patterning techniques are often employed to enhance the optical interface to single photoluminescent emitt..

Framework for atomic-level characterisation of quantum computer arrays by machine learning

Muhammad Usman, Yi Zheng Wong, Charles D Hill, Lloyd CL Hollenberg

2020-03-16

Atomic-level qubits in silicon are attractive candidates for large-scale quantum computing; however, their quantum properties and ..

Laser Modulation of Superconductivity in a Cryogenic Wide-field Nitrogen-Vacancy Microscope.

Scott E Lillie, David A Broadway, Nikolai Dontschuk, Sam C Scholten, Brett C Johnson, Sebastian Wolf, Stephan Rachel, Lloyd CL Hollenberg, Jean-Philippe Tetienne

2020-03-11

We realize a cryogenic wide-field nitrogen-vacancy microscope and use it to image Abrikosov vortices and transport currents in a s..

Development of a silicon-diamond interface on (111) diamond

AK Schenk, MJ Sear, N Dontschuk, A Tsai, KJ Rietwyk, A Tadich, BCC Cowie, L Ley, A Stacey, C Pakes

2020-02-18

We report the preparation of a silicon terminated (111) diamond surface. Low energy electron diffraction and core level photoemiss..

Process-induced defects in Au-hyperdoped Si photodiodes

SQ Lim, CT-K Lew, PK Chow, JM Warrender, JS Williams, BC Johnson

2019-12-14

Hyperdoped Si formed by implantation followed by pulsed laser melting is a promising material for enhanced near-infrared photodete..

Quantum Bath Control with Nuclear Spin State Selectivity via Pulse-Adjusted Dynamical Decoupling

JE Lang, DA Broadway, GAL White, LT Hall, A Stacey, LCL Hollenberg, TS Monteiro, J-P Tetienne

2019-11-22

Dynamical decoupling (DD) is a powerful method for controlling arbitrary open quantum systems. In quantum spin control, DD general..

First-Principles Calculation of Triplet Exciton Diffusion in Crystalline Poly(p-phenylene vinylene)

Igor Lyskov, Egor Trushin, Ben Q Baragiola, Timothy W Schmidt, Jared H Cole, Saly P Russo

2019-11-07

In this article, we present multiscale modeling of triplet exciton energy migrating through the archetypical poly(p-phenylene viny..

Optically Active Defects at the SiC/SiO2 Interface

BC Johnson, J Woerle, D Haasmann, CT-K Lew, RA Parker, H Knowles, B Pingault, M Atature, A Gali, S Dimitrijev, M Camarda, JC McCallum

2019-10-11

The SiC/SiO2 interface is a central component of many SiC electronic devices. Defects intrinsic to this interface can have a profo..

Origins of Diamond Surface Noise Probed by Correlating Single-Spin Measurements with Surface Spectroscopy

Sorawis Sangtawesin, Bo L Dwyer, Srikanth Srinivasan, James J Allred, Lila VH Rodgers, Kristiaan De Greve, Alastair Stacey, Nikolai Dontschuk, Kane M O'Donnell, Di Hu, D Andrew Evans, Cherno Jaye, Daniel A Fischer, Matthew L Markham, Daniel J Twitchen, Hongkun Park, Mikhail D Lukin, Nathalie P de Leon

2019-09-26

The nitrogen-vacancy (NV) center in diamond exhibits spin-dependent fluorescence and long spin coherence times under ambient condi..

Activation and electron spin resonance of near-surface implanted bismuth donors in silicon

D Holmes, WIL Lawrie, BC Johnson, A Asadpoordarvish, JC McCallum, DR McCamey, DN Jamieson

2019-08-29

The bismuth (Bi) substitutional donor in silicon (Si) is an attractive qubit candidate for quantum computing proposals due to its ..

Imaging Graphene Field-Effect Transistors on Diamond Using Nitrogen-Vacancy Microscopy

Scott E Lillie, Nikolai Dontschuk, David A Broadway, Daniel L Creedon, Lloyd CL Hollenberg, Jean-Philippe Tetienne

2019-08-09

The application of imaging techniques based on ensembles of nitrogen-vacancy (N-V) sensors in diamond to characterize electrical d..

Single Rare-Earth Ions as Atomic-Scale Probes in Ultrascaled Transistors

Qi Zhang, Guangchong Hu, Gabriele G de Boo, Milos Rancic, Brett C Johnson, Jeffrey C McCallum, Jiangfeng Du, Matthew J Sellars, Chunming Yin, Sven Rogge

2019-08-01

Continued scaling of semiconductor devices has driven information technology into vastly diverse applications. The performance of ..

Microscopic Imaging of the Stress Tensor in Diamond Using in Situ Quantum Sensors

DA Broadway, BC Johnson, MSJ Barson, SE Lillie, N Dontschuk, DJ McCloskey, A Tsai, T Teraji, DA Simpson, A Stacey, JC McCallum, JE Bradby, MW Doherty, LCL Hollenberg, J-P Tetienne

2019-07-01

The precise measurement of mechanical stress at the nanoscale is of fundamental and technological importance. In principle, all si..

Electron spin relaxation of single phosphorus donors in metal-oxide-semiconductor nanoscale devices

Stefanie B Tenberg, Serwan Asaad, Mateusz T Madzik, Mark A Johnson, Benjamin Joecker, Arne Laucht, Fay E Hudson, Kohei M Itoh, A Malwin Jakob, Brett C Johnson, David N Jamieson, Jeffrey C McCallum, Andrew S Dzurak, Robert Joynt, Andrea Morello

2019-05-14

We analyze the electron spin relaxation rate 1/T1 of individual ion-implanted P31 donors in a large set of metal-oxide-semiconduct..

Low-Temperature Properties of Whispering-Gallery Modes in Isotopically Pure Silicon-28

J Bourhill, M Goryachev, DL Creedon, BC Johnson, DN Jamieson, ME Tobar

2019-04-15

Whispering-gallery-(WG) mode resonators are machined from a boule of single-crystal isotopically pure silicon-28. Before machining..

Apparent delocalization of the current density in metallic wires observed with diamond nitrogen-vacancy magnetometry

J-P Tetienne, N Dontschuk, DA Broadway, SE Lillie, T Teraji, DA Simpson, A Stacey, LCL Hollenberg

2019-01-29

We report on a quantitative analysis of the magnetic field generated by a continuous current running in metallic microwires fabric..

Photoluminescence in hexagonal silicon carbide by direct femtosecond laser writing

S Castelletto, AFM Almutairi, K Kumagai, T Katkus, Y Hayasaki, BC Johnson, S Juomos

2018-12-15

Direct femtosecond laser writing has been used to produce localized regions of photo-luminescent emission in 4H- and 6H-silicon ca..

Magnetic noise from ultrathin abrasively deposited materials on diamond

Scott E Lillie, David A Broadway, Nikolai Dontschuk, Ali Zavabeti, David A Simpson, Tokuyuki Teraji, Torben Daeneke, Lloyd CL Hollenberg, Jean-Philippe Tetienne

2018-11-08

Sensing techniques based on the negatively charged nitrogen-vacancy (NV) center in diamond have emerged as promising candidates to..

Scalable quantum computing with ion-implanted dopant atoms in silicon

A Morello, G Tosi, FA Mohiyaddin, V Schmitt, V Mourik, T Botzem, A Laucht, JJ Pla, S Tenberg, R Savytskyy, M Madzik, F Hudson, AS Dzurak, KM Itoh, AM Jakob, BC Johnson, JC McCallum, DN Jamieson

2018-01-01

We present a scalable strategy to manufacture quantum computer devices, by encoding quantum information in the combined electron-n..