218 citations · 698 across the 13 of their papers we have counts for
13 papers
Exploiting ionization dynamics in the nitrogen vacancy center for rapid, high-contrast spin and charge state initialization
Daniel Wirtitsch, Georg Wachter, Sarah Reisenbauer +6
We propose and experimentally demonstrate a method to strongly increase the sensitivity of spin measurements on nitrogen-vacancy (NV) centers in diamond, which can be readily imple…
First-principles computational methods for quantum defects in two-dimensional materials: A perspective
Hosung Seo, Viktor Ivády, Yuan Ping
Quantum defects are atomic defects in materials that provide resources to construct quantum information devices such as single-photon emitters (SPEs) and spin qubits. Recently, two…
Symmetric carbon tetramers forming chemically stable spin qubits in hBN
Zsolt Benedek, Rohit Babar, Ádám Ganyecz +4
Point defect quantum bits in semiconductors have the potential to revolutionize sensing at atomic scales. Currently, vacancy related defects, such as the NV center in diamond and t…
Near zero-field microwave-free magnetometry with ensembles of nitrogen-vacancy centers in diamond
Omkar Dhungel, Till Lenz, Muhib Omar +8
We study cross-relaxation features near zero magnetic field with ensembles of nitrogen-vacancy (NV) centers in diamond and examine their properties in samples with a range (0.9 ppm…
Exhaustive characterization of modified Si vacancies in 4H-SiC
Joel Davidsson, Rohit Babar, Danial Shafizadeh +4
The negatively charged silicon vacancy () in silicon carbide is a well-studied point defect for quantum applications. At the same time, a closer inspection of en…
Coherent dynamics of multi-spin centers in hexagonal boron nitride
W. Liu, V. Ivády, Z. -P. Li +18
Hexagonal boron nitride (hBN) has recently been demonstrated to contain optically polarized and detected electron spins that can be utilized for implementing qubits and quantum sen…
Stone-Wales defects in hexagonal boron nitride as ultraviolet emitters
Hanen Hamdi, Gergő Thiering, Zoltán Bodrog +2
Many quantum emitters have been measured close or near the grain boundaries of the two-dimensional hexagonal boron nitride where various Stone-Wales defects appear. We show by mean…
DMRG on top of plane-wave Kohn-Sham orbitals: case study of defected boron nitride
Gergely Barcza, Viktor Ivády, Tibor Szilvási +4
In this paper, we analyze the numerical aspects of the inherently multi-reference density matrix renormalization group (DMRG) calculations on top of the periodic Kohn-Sham density…
Electrically driven optical interferometry with spins in silicon carbide
Kevin C. Miao, Alexandre Bourassa, Christopher P. Anderson +11
Interfacing solid-state defect electron spins to other quantum systems is an ongoing challenge. The ground-state spin's weak coupling to its environment bestows excellent coherence…
Hybrid-DFT+V method for accurate band structure of correlated transition metal compounds: the case of cerium dioxide
Viktor Ivády, Adam Gali, Igor A. Abrikosov
Hybrid functionals' non-local exchange-correlation potential contains a derivative discontinuity that improves on standard semi-local density functional theory (DFT) band gaps. Mor…
High fidelity bi-directional nuclear qubit initialization in SiC
Viktor Ivády, Paul V. Klimov, Kevin C. Miao +6
Dynamic nuclear polarization (DNP) is an attractive method for initializing nuclear spins that are strongly coupled to optically active electron spins because it functions at room…
Optical polarization of nuclear spins in silicon carbide
Abram L. Falk, Paul V. Klimov, Viktor Ivády +5
We demonstrate optically pumped dynamic nuclear polarization of 29-Si nuclear spins that are strongly coupled to paramagnetic color centers in 4H- and 6H-SiC. The 99 +/- 1% degree…
Electrically and mechanically tunable electron spins in silicon carbide color centers
Abram L. Falk, Paul V. Klimov, Bob B. Buckley +6
The electron spins of semiconductor defects can have complex interactions with their host, particularly in polar materials like SiC where electrical and mechanical variables are in…