Jacob Fortner

Writing DNA Bases into sp3 Quantum Defects

YuHuang Wang, Abhindev Kizhakke Veetil, Alexander Kotsanos, Anna Wang et autres

us (code pays fourni par la source)

Capturing Exciton-Proton Collisions in Confined Water

YuHuang Wang, Ziyi Wang, Jacek Klos, Jacob Fortner

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Quantum defects in carbon nanotubes as single-photon sources

Yih‐Ren Chang, Jacob Fortner, Vigneshwaran Chandrasekaran, Brendan J. Gifford et autres

Single-photon emitters are essential components of emerging quantum technologies, including secure communication and quantum computing. Single-walled carbon nanotubes (SWCNTs) have emerged as a promising platform for quantum light sources due to their quasi-one-dimensional excitonic host structure and compatibility with telecom photonic systems. …

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Clar’s Rule Reveals the Topological Origin of Edge States in π-Conjugated Systems

Benjamin Eller, Jacob Fortner, YuHuang Wang

Edge states in π-conjugated systems govern scattering, magnetism, and fluorescence quenching, yet their origin has remained elusive. We show that Clar’s sextet-maximization principle, the resonance rule of aromatic hydrocarbons, captures the molecular and topological origins of edge states. Applied under boundary constraints, …

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Author response for "Chemical Defects as Li + Ion Traps: A Theoretical Study"

D. K. Shin, Jacek Kłos, Jacob Fortner, YuHuang Wang

Chiral Emission from Organic Color Centers in Carbon Nanotubes: A Theoretical Study

Jacob Fortner, YuHuang Wang

The quantized nature and orthogonality of left- and right-handed circular polarization states make photons ideal candidates as qubits for quantum technologies. However, generating chiral single photons often requires coupling a single-photon emitter to large-scale waveguides or applying strong magnetic fields to break …

(Invited) Imaging Exciton Flow in Quantum Defect-Engineered Carbon Nanotubes

YuHuang Wang, Mijin Kim, Ziyi Wang, Jacek Kłos et autres

Excitons—electron-hole pairs bound by Coulomb interactions—are fundamental to photonic processes. The dynamics of electron-hole recombination in many conjugated polymers and semiconductor nanocrystals—including single-walled carbon nanotubes (SWCNTs)—directly impact applications in energy harvesting, light-emitting diodes, optical imaging, biochemical detection, and quantum information science. In …

Chemical defects as Li + ion traps: a theoretical study

Jacek Kłos, Jacob Fortner, YuHuang Wang

defects, with a binding energy of ∼2.95 eV. This defect-ion interaction redistributes local charge, perturbs frontier orbitals, and produces a 437 meV red-shift in the defect absorption spectrum, as revealed by time-dependent DFT. These findings highlight the sensitivity of quantum defects to …

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(Invited) Is It Possible to Create Identical Organic Color-Centers?

YuHuang Wang, Haoran Qu, Jacob Fortner, James J. Wu et autres

Organic Color-Centers (OCCs) are rapidly emerging as a unique family of color centers, distinguished by their rich chemistry and photophysics. Their potential to significantly enhance bio-imaging techniques, refine molecular sensing methods, and advance quantum information sciences is enormous. However, a significant challenge …

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[2 + 2] Cycloaddition Produces Divalent Organic Color-Centers with Reduced Heterogeneity in Single-Walled Carbon Nanotubes

Haoran Qu, Yulun Han, Jacob Fortner, Xiaojian Wu et autres

Organic color centers (OCCs), generated by the covalent functionalization of single-walled carbon nanotubes, have been exploited for chemical sensing, bioimaging, and quantum technologies. However, monovalent OCCs can assume at least 6 different bonding configurations on the sp 2 carbon lattice of a …

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Defect Pairs in Boron Nitrides That Exhibit Strong Electronic Transitions in the Infrared

S.-H. Lee, Jacob Fortner, YuHuang Wang

Vacancy and substitution defects in boron nitrides display quantum emission properties promising for various technological applications in biosensing, imaging, telecommunications, and quantum optical computing. However, such atomic defects and their associated properties have thus far been limited to the ultraviolet and visible …

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Cavity-enhanced photon indistinguishability at room temperature and telecom wavelengths

Lukas Husel, Julian Trapp, Johannes Scherzer, Xiaojian Wu et autres

Indistinguishable single photons in the telecom-bandwidth of optical fibers are indispensable for long-distance quantum communication. Solid-state single photon emitters have achieved excellent performance in key benchmarks, however, the demonstration of indistinguishability at room-temperature remains a major challenge. Here, we report room-temperature photon …

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