767 citations · 4.8k across the 48 of their papers we have counts for
17 papers · 1 filter
Strongly Anisotropic Spin Relaxation in the Neutral Silicon Vacancy Center in Diamond
Brendon C. Rose, Gergo Thiering, Alexei M. Tyryshkin +5
Color centers in diamond are a promising platform for quantum technologies, and understanding their interactions with the environment is crucial for these applications. We report a…
Multi-frequency Spin Manipulation Using Rapidly Tunable Superconducting Coplanar Waveguide Microresonators
A. T. Asfaw, A. J. Sigillito, A. M. Tyryshkin +2
In this work, we demonstrate the use of frequency-tunable superconducting NbTiN coplanar waveguide microresonators for multi-frequency pulsed electron spin resonance (ESR) experime…
Coherent Rabi dynamics of a superradiant spin ensemble in a microwave cavity
B. C. Rose, A. M. Tyryshkin, H. Riemann +6
We achieve the strong coupling regime between an ensemble of phosphorus donor spins in a highly enriched Si crystal and a 3D dielectric resonator. Spins were polarized beyon…
Large Stark tuning of donor electron spin quantum bits in germanium
A. J. Sigillito, A. M. Tyryshkin, J. W. Beeman +3
Donor electron spins in semiconductors make exceptional quantum bits because of their long coherence times and compatibility with industrial fabrication techniques. Despite many ad…
Spin Coherence and N ESEEM Effects of Nitrogen-Vacancy Centers in Diamond with X-band Pulsed ESR
B. C. Rose, C. D. Weis, A. M. Tyryshkin +2
Pulsed ESR experiments are reported for ensembles of negatively-charged nitrogen-vacancy centers (NV) in diamonds at X-band magnetic fields (280-400 mT) and low temperatures (2…
Addressing spin transitions on 209Bi donors in silicon using circularly-polarized microwaves
T. Yasukawa, A. J. Sigillito, B. C. Rose +2
Over the past decade donor spin qubits in isotopically enriched Si have been intensely studied due to their exceptionally long coherence times. More recently bismuth donor e…
Atomic clock transitions in silicon-based spin qubits
Gary Wolfowicz, Alexei M. Tyryshkin, Richard E. George +7
A major challenge in using spins in the solid state for quantum technologies is protecting them from sources of decoherence. This can be addressed, to varying degrees, by improving…
Dynamical Decoupling in the Presence of Realistic Pulse Errors
A. M. Tyryshkin, Zhi-Hui Wang, Wenxian Zhang +4
One of the most significant hurdles to be overcome on the path to practical quantum information processors is dealing with quantum errors. Dynamical decoupling is a particularly pr…
Effect of pulse error accumulation on dynamical decoupling of the electron spins of phosphorus donors in silicon
Zhi-Hui Wang, Wenxian Zhang, A. M. Tyryshkin +4
Dynamical decoupling (DD) is an efficient tool for preserving quantum coherence in solid-state spin systems. However, the imperfections of real pulses can ruin the performance of l…
Solid state quantum memory using the 31P nuclear spin
John J. L. Morton, Alexei M. Tyryshkin, Richard M. Brown +7
The transfer of information between different physical forms is a central theme in communication and computation, for example between processing entities and memory. Nowhere is thi…
Environmental effects on electron spin relaxation in N@C60
John J. L. Morton, Alexei M. Tyryshkin, Arzhang Ardavan +3
We examine environmental effects of surrounding nuclear spins on the electron spin relaxation of the N@C60 molecule (which consists of a nitrogen atom at the centre of a fullerene…
Will spin-relaxation times in molecular magnets permit quantum information processing?
Arzhang Ardavan, Olivier Rival, John J. L. Morton +4
Using X-band pulsed electron spin resonance, we report the intrinsic spin-lattice () and phase coherence () relaxation times in molecular nanomagnets for the first time.…
Bang-bang control of fullerene qubits using ultra-fast phase gates
John J. L. Morton, Alexei M. Tyryshkin, Arzhang Ardavan +4
Quantum mechanics permits an entity, such as an atom, to exist in a superposition of multiple states simultaneously. Quantum information processing (QIP) harnesses this profound ph…
Towards a fullerene-based quantum computer
Simon C Benjamin, Arzhang Ardavan, G Andrew D Briggs +12
Molecular structures appear to be natural candidates for a quantum technology: individual atoms can support quantum superpositions for long periods, and such atoms can in principle…
High Fidelity Single Qubit Operations using Pulsed EPR
John J. L. Morton, Alexei M. Tyryshkin, Arzhang Ardavan +3
Systematic errors in spin rotation operations using simple RF pulses place severe limitations on the usefulness of the pulsed magnetic resonance methods in quantum computing applic…
A new mechanism for electron spin echo envelope modulation
John J. L. Morton, Alexei M. Tyryshkin, Arzhang Ardavan +3
Electron spin echo envelope modulation (ESEEM) has been observed for the first time from a coupled hetero-spin pair of electron and nucleus in liquid solution. Previously, modulati…
Measuring errors in single qubit rotations by pulsed electron paramagnetic resonance
John J. L. Morton, Alexei M. Tyryshkin, Arzhang Ardavan +3
The ability to measure and reduce systematic errors in single-qubit logic gates is crucial when evaluating quantum computing implementations. We describe pulsed electron paramagnet…