207 citations · 339 across the 20 of their papers we have counts for
20 papers
Understanding Surface-Induced Decoherence of NV Centers in Diamond
Jonah Nagura, Mykyta Onizhuk, Giulia Galli
Nitrogen vacancy centers (NV) in proximity to diamond surfaces are promising nanoscale quantum sensors. However, their coherence properties are negatively affected by magnetic and…
Probing aqueous interfaces with spin defects
Alfonso Castillo, Gustavo R. Perez-Lemus, Mykyta Onizhuk +1
Understanding the physical and chemical properties of aqueous interfaces is important in diverse fields of science, ranging from biology and chemistry to materials science. In spit…
High-throughput spin-bath characterization of spin-defects in semiconductors
Abigail N. Poteshman, Mykyta Onizhuk, Christopher Egerstrom +4
Detailed knowledge of the local environments of spin-defects in semiconductors, such as nitrogen vacancy (NV) centers in diamond or divacancies in silicon carbide, is crucial for o…
Minute-long quantum coherence enabled by electrical depletion of magnetic noise
Cyrus Zeledon, Benjamin Pingault, Jonathan C. Marcks +13
Integrating solid-state spin defects into classical electronic devices can enable new opportunities for quantum information processing that benefit from existing semiconductor tech…
Quantum decoherence of nitrogen-vacancy spin ensembles in a nitrogen spin bath in diamond under dynamical decoupling
Huijin Park, Mykyta Onizhuk, Eunsang Lee +5
The negatively charged nitrogen-vacancy (NV) center in diamond has emerged as a leading qubit platform for quantum technology applications. One of the key challenges for NV-based q…
Coherent Erbium Spin Defects in Colloidal Nanocrystal Hosts
Joeson Wong, Mykyta Onizhuk, Jonah Nagura +13
We demonstrate nearly a microsecond of spin coherence in Er3+ ions doped in cerium dioxide nanocrystal hosts, despite a large gyromagnetic ratio and nanometric proximity of the spi…
Decoherence of solid-state spin qubits: a computational perspective
Mykyta Onizhuk, Giulia Galli
The usefulness of solid-state spins in quantum technologies depends on how long they can remain in a coherent superposition of quantum states. This Colloquium discusses how first-p…
Quantum spin probe of single charge dynamics
Jonathan C. Marcks, Mykyta Onizhuk, Yu-Xin Wang +9
Electronic defects in semiconductors form the basis for many emerging quantum technologies. Understanding defect spin and charge dynamics in solid state platforms is crucial to dev…
Understanding central spin decoherence due to interacting dissipative spin baths
Mykyta Onizhuk, Yu-Xin Wang, Jonah Nagura +2
We propose a new approach to simulate the decoherence of a central spin coupled to an interacting dissipative spin bath with cluster-correlation expansion techniques. We benchmark…
Guiding Diamond Spin Qubit Growth with Computational Methods
Jonathan C. Marcks, Mykyta Onizhuk, Nazar Delegan +7
The nitrogen vacancy (NV) center in diamond, a well-studied, optically active spin defect, is the prototypical system in many state of the art quantum sensing and communication app…
Detecting spin bath polarization with quantum quench phase shifts of single spins in diamond
Paul C. Jerger, Yu-Xin Wang, Mykyta Onizhuk +7
Single-qubit sensing protocols can be used to measure qubit-bath coupling parameters. However, for sufficiently large coupling, the sensing protocol itself perturbs the bath, which…
Decoherence of Nuclear Spins in the Proximity of Nitrogen Vacancy Centers in Diamond
Mykyta Onizhuk, Giulia Galli
Nuclear spins in the proximity of electronic spin defects in solids are promising platforms for quantum information processing due to their ability to preserve quantum states for a…
Discovery of Atomic Clock-Like Spin Defects in Simple Oxides from First Principles
Joel Davidsson, Mykyta Onizhuk, Christian Vorwerk +1
Virtually noiseless due to the scarcity of spinful nuclei in the lattice, simple oxides hold promise as hosts of solid-state spin qubits. However, no suitable spin defect has yet b…
Enhancing Spin Coherence in Optically Addressable Molecular Qubits through Host-Matrix Control
S. L. Bayliss, P. Deb, D. W. Laorenza +4
Optically addressable spins are a promising platform for quantum information science due to their combination of a long-lived qubit with a spin-optical interface for external qubit…
PyCCE: A Python Package for Cluster Correlation Expansion Simulations of Spin Qubit Dynamic
Mykyta Onizhuk, Giulia Galli
We present PyCCE, an open-source Python library to simulate the dynamics of spin qubits in a spin bath, using the cluster-correlation expansion (CCE) method. PyCCE includes modules…
Substrate-controlled dynamics of spin qubits in low dimensional van-der-Waals materials
Mykyta Onizhuk, Giulia Galli
We report a theoretical study of the coherence dynamics of spin qubits in two-dimensional materials (2DMs) and van-der-Waals heterostructures, as a function of the host thickness a…
Generalized scaling of spin qubit coherence in over 12,000 host materials
Shun Kanai, F. Joseph Heremans, Hosung Seo +6
Spin defect centers with long quantum coherence times () are key solid-state platforms for a variety of quantum applications. Recently, cluster correlation expansion (CCE) tec…
Spin-spin interactions in solids from mixed all-electron and pseudopotential calculations a path to screening materials for spin qubits
Krishnendu Ghosh, He Ma, Mykyta Onizhuk +2
Understanding the quantum dynamics of spin defects and their coherence properties requires accurate modeling of spin-spin interaction in solids and molecules, for example by using…
Probing the coherence of solid-state qubits at avoided crossings
Mykyta Onizhuk, Kevin C. Miao, Joseph P. Blanton +5
Optically addressable paramagnetic defects in wide-band-gap semiconductors are promising platforms for quantum communications and sensing. The presence of avoided crossings between…
Entanglement and control of single quantum memories in isotopically engineered silicon carbide
Alexandre Bourassa, Christopher P. Anderson, Kevin C. Miao +9
Nuclear spins in the solid state are both a cause of decoherence and a valuable resource for spin qubits. In this work, we demonstrate control of isolated 29Si nuclear spins in sil…