Publications by authors named "E Bersin"
Article Synopsis
- Solid-state quantum emitters are becoming important for quantum networking, but traditional optical methods for measuring them are inefficient and hard to repeat on a large scale.
- New spectroscopic techniques have been developed that allow for large-scale, automated characterization of color centers, including a method that tracks them using a global coordinate system for easy comparison across experiments.
- An advanced cryogenic microscope was used to significantly speed up the resonant spectroscopy process, and automated methods now allow for the imaging of thousands of fields, which will improve the identification of useful quantum emitters for various applications.
Article Synopsis
- Developing quantum computers requires effectively distributing entanglement among many qubits, and diamond colour centres are promising candidates due to their remote entanglement and coherent control capabilities.
- This research introduces a method to integrate high-yield "quantum microchiplets" made of diamond waveguide arrays into photonic integrated circuits, achieving a defect-free arrangement.
- The study demonstrates that individual colour centre transitions can be finely tuned, allowing for consistent and stable optical performance, which is vital for advancing quantum repeaters and processors.
Solid-state quantum emitters that couple coherent optical transitions to long-lived spin qubits are essential for quantum networks. Here we report on the spin and optical properties of individual tin-vacancy (SnV) centers in diamond nanostructures. Through cryogenic magneto-optical and spin spectroscopy, we verify the inversion-symmetric electronic structure of the SnV, identify spin-conserving and spin-flipping transitions, characterize transition linewidths, measure electron spin lifetimes, and evaluate the spin dephasing time.
View Article and Find Full Text PDFNanodiamonds hosting colour centres are a promising material platform for various quantum technologies. The fabrication of non-aggregated and uniformly-sized nanodiamonds with systematic integration of single quantum emitters has so far been lacking. Here, we present a top-down fabrication method to produce 30.
View Article and Find Full Text PDFNuclear magnetic resonance spectroscopy is a powerful tool for the structural analysis of organic compounds and biomolecules but typically requires macroscopic sample quantities. We use a sensor, which consists of two quantum bits corresponding to an electronic spin and an ancillary nuclear spin, to demonstrate room temperature magnetic resonance detection and spectroscopy of multiple nuclear species within individual ubiquitin proteins attached to the diamond surface. Using quantum logic to improve readout fidelity and a surface-treatment technique to extend the spin coherence time of shallow nitrogen-vacancy centers, we demonstrate magnetic field sensitivity sufficient to detect individual proton spins within 1 second of integration.
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