Grant number: CE170100012 | Funding period: 2017 - 2025
Active
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..
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..
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..
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..
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..
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..
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..
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)..
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..
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..
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..
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..
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..
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 ..
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..
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..
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,..
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..
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 ..
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..
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..
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..
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..
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..
2021-09-17
Theoretical understanding of scanning tunnelling microscopy (STM) measurements involve electronic structure details of the STM tip..
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..
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..
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..
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 ..
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..
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..
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..
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..
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..
D Holmes, BC Johnson, C Chua, B Voisin, S Kocsis, S Rubanov, SG Robson, JC McCallum, DR McCamey, S Rogge, DN Jamieson
Spins in the "semiconductor vacuum"of silicon-28 (Si28) are suitable qubit candidates due to their long coherence times. An isotop..
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..
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 ..
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..
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 ..
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..
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..
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..
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..
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..
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..
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 ..
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 ..
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. ..
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..
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..
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 ..
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..
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..
2019-12-14
Hyperdoped Si formed by implantation followed by pulsed laser melting is a promising material for enhanced near-infrared photodete..
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..
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..
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..
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..
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 ..
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..
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 ..
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..
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..
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..
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..
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..
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..
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..