1.3k citations · 2.3k across the 20 of their papers we have counts for
20 papers
Elimination of Flux Trapping in Superconducting Circuits in Ambient Magnetic Fields
Rohan T. Kapur, Alex Wynn, Sergey K. Tolpygo +10
Superconductor digital electronics and quantum computing with superconducting qubits are promising next-generation computing technologies. When cooled down or operated in the prese…
Mitigation of Magnetic Flux Trapping in Superconducting Electronics Using Moats
Rohan T. Kapur, Sergey K. Tolpygo, Alex Wynn +7
Magnetic flux (vortex) trapping remains a major obstacle to very large scale integration in superconducting electronics. Moats -- etched regions in circuit layers placed in ground…
2025 Quantum Diamond Workshop Findings Report
Danielle A. Braje, Matthew L. Markham, Jennifer M. Schloss +2
This report synthesizes the outcomes of a two-day workshop held in Washington, D.C. in May, 2025 that convened researchers, industry representatives, and government stakeholders to…
Vector magnetometry using cavity-enhanced microwave readout in nitrogen-vacancy diamond
Reginald Wilcox, David Phillips, Matthew Steinecker +6
We demonstrate -steradian vector magnetic field sensing using an ensemble of nitrogen-vacancy (NV) centers in a single-crystal diamond coupled to a microwave (MW) cavity. The M…
Machine Learning Enables Optimization of Diamond for Quantum Applications
Dane W. deQuilettes, Eden Price, Linh M. Pham +11
Spins in solid-state materials, molecules, and other chemical systems have the potential to impact the fields of quantum sensing, communication, simulation, and computing. In parti…
Flux-trapping characterization for superconducting electronics using a cryogenic widefield N- diamond microscope
Rohan T. Kapur, Pauli Kehayias, Sergey K. Tolpygo +12
Magnetic flux trapping is a significant hurdle limiting the reliability and scalability of superconducting electronics, yet tools for imaging flux vortices remain slow or insensiti…
Quantum Frequency Mixing using an N- Diamond Microscope
Samuel J. Karlson, Pauli Kehayias, Jennifer M. Schloss +6
Wide-field magnetic microscopy using nitrogen-vacancy (NV) centers in diamond can yield high-quality magnetic images of DC and AC magnetic fields. The unique combination of micron-…
Quantum Diamond Microscope for Dynamic Imaging of Magnetic Fields
Jiashen Tang, Zechuan Yin, Connor A. Hart +6
Wide-field imaging of magnetic signals using ensembles of nitrogen-vacancy (NV) centers in diamond has garnered increasing interest due to its combination of micron-scale resolutio…
A Solid-State Microwave Magnetometer with Picotesla-Level Sensitivity
Scott T. Alsid, Jennifer M. Schloss, Matthew H. Steinecker +5
Quantum sensing of low-frequency magnetic fields using nitrogen-vacancy (NV) center ensembles has been demonstrated in multiple experiments with sensitivities as low as 1 pT/…
Ramsey Envelope Modulation in NV Diamond Magnetometry
Jner Tzern Oon, Jiashen Tang, Connor A. Hart +4
Nitrogen-vacancy (NV) spin ensembles in diamond provide an advanced magnetic sensing platform, with applications in both the physical and life sciences. The development of isotopic…
NV-Diamond Magnetic Microscopy using a Double Quantum 4-Ramsey Protocol
Connor A. Hart, Jennifer M. Schloss, Matthew J. Turner +3
We introduce a double quantum (DQ) 4-Ramsey measurement protocol that enables wide-field magnetic imaging using nitrogen vacancy (NV) centers in diamond, with enhanced homogeneity…
Generation of nitrogen-vacancy ensembles in diamond for quantum sensors: Optimization and scalability of CVD processes
Andrew M. Edmonds, Connor A. Hart, Matthew J. Turner +17
Ensembles of nitrogen-vacancy (NV) centers in diamond are a leading platform for practical quantum sensors. Reproducible and scalable fabrication of NV-ensembles with desired prope…
Cavity quantum electrodynamic readout of a solid-state spin sensor
Erik R. Eisenach, John F. Barry, Michael F. O'Keeffe +4
Robust, high-fidelity readout is central to quantum device performance. Overcoming poor readout is an increasingly urgent challenge for devices based on solid-state spin defects, p…
Imaging crystal stress in diamond using ensembles of nitrogen-vacancy centers
P. Kehayias, M. J. Turner, R. Trubko +5
We present a micrometer-resolution millimeter-field-of-view stress imaging method for diamonds containing a thin surface layer of nitrogen vacancy (NV) centers. In this method, we…
Photoluminescence decomposition analysis: a technique to characterize NV creation in diamond
Scott Alsid, John Barry, Linh Pham +4
Treatment of lab-grown diamond by electron irradiation and annealing has enabled quantum sensors based on negatively-charged nitrogen-vacancy (NV) centers to demonstrate…
Decoherence of dipolar spin ensembles in diamond
Erik Bauch, Swati Singh, Junghyun Lee +8
We present a combined theoretical and experimental study of solid-state spin decoherence in an electronic spin bath, focusing specifically on ensembles of nitrogen vacancy (NV) col…
Sensitivity Optimization for NV-Diamond Magnetometry
John F. Barry, Jennifer M. Schloss, Erik Bauch +4
Solid-state spin systems including nitrogen-vacancy (NV) centers in diamond constitute an increasingly favored quantum sensing platform. However, present NV ensemble devices exhibi…
Microwave-assisted spectroscopy technique for studying charge state in nitrogen-vacancy ensembles in diamond
D. P. L. Aude Craik, P. Kehayias, A. S. Greenspon +7
We introduce a microwave-assisted spectroscopy technique to determine the relative concentrations of nitrogen vacancy (NV) centers in diamond that are negatively-charged (NV)…
Simultaneous Broadband Vector Magnetometry Using Solid-State Spins
Jennifer M. Schloss, John F. Barry, Matthew J. Turner +1
We demonstrate a vector magnetometer that simultaneously measures all Cartesian components of a dynamic magnetic field using an ensemble of nitrogen-vacancy (NV) centers in a singl…
Ultralong Dephasing Times in Solid-State Spin Ensembles via Quantum Control
Erik Bauch, Connor A. Hart, Jennifer M. Schloss +5
Quantum spin dephasing is caused by inhomogeneous coupling to the environment, with resulting limits to the measurement time and precision of spin-based sensors. The effects of spi…