Skip to content
DraconiticResearch
Search Sources API
203,234 studies31 sourcesUpdated 23 min ago
Peer-reviewedCC BYACS Central Science

Molecular Diradical Spin Qubits in a Crystalline Host as a Platform for Quantum Sensing

  • Sebastian M. Kopp1,2
  • Jonathan R. Palmer1,2
  • Brian T. Phelan1,2
  • Kathryn R. Peinkofer1,2
  • Shunta Nakamura1,2
  • parker watts3,1,2
  • Matthew D. Krzyaniak1,2
  • Michael R. Wasielewski3,1,2
  1. 1Department of Chemistry, Institute for Quantum Information Science Research and Engineering, and Center for Molecular Quantum Transduction
  2. 2Northwestern University
  3. 3Applied Physics Program
Open at sourcePDFDOICite

Abstract

Doping a luminescent tris(2,4,6-trichlorophenyl)methyl diradical m(TTM)2 into a host crystal of its diamagnetic precursor m(HTTM)2 creates a molecular color center with enhanced optical-spin interface properties important for quantum sensing. Optical polarization of the |T0⟩ sublevel of the diradical triplet ground state is achieved by spin-selective intersystem crossing from the |T+⟩ and |T-⟩sublevels of the triplet excited state at ambient and cryogenic temperatures. Coherent spin control of m(TTM)2 doped into m(HTTM)2 using pulsed optically detected magnetic resonance (ODMR) spectroscopy results in a ten-fold improvement in ODMR contrast over that observed for randomly ordered m(TTM)2 using continuous-wave ODMR The diradical doped crystals achieve spin coherence times of 2.8, 3.4, and 7.4 s at 294 K, 85 K, and 5 K, respectively. The diradical photoluminescence is sensitive to weak applied magnetic fields independent of temperature, excitation wavelength and dopant concentration, providing a promising pathway towards robust quantum sensing of anisotropic magnetic fields under ambient conditions.

Related

  1. Super Sensitization Near-Infrared Ln-MOF with ultra high quantum yield 19.51% as Ratiometric Temperature Sensing Platform
    Chenxi Xie, Xueying Zhou, Bin Ding +6
    ChemRxivPreprintCC BYFull textMaterials & polymersChemRxiv
  2. Bulk Post-Polymerization Modification of a Single-Crystalline 2D Polymer via the Katritzky Reaction: A Modular Platform for Functional 2D Materials
    Valentin-Razvan Lupu, Antonia Neels, Paweł P. Ziemiański +4
    ChemRxivPreprintCC BYFull textMaterials & polymersChemRxiv
  3. Entropy-driven graded molecular selectivity in stacking-fault-programmed crystalline metallacycle membranes
    Run-Hao Li, Jinlong He, Chen Zhao +5
    Nature CommunicationsPeer-reviewedCC BY-NC-ND 4.0Full textOrganic chemistryCrossref
  4. Molecular dynamics between amorphous and crystalline phases of e-beam irradiated piezoelectric PVDF thin films employing solid-state NMR spectroscopy
    Natalia Potrzebowska, Olivier Cavani, Slawomir Kazmierski +3
    Polymer Degradation and StabilityPeer-reviewedHAL deposit licenceFull text8 citedInorganic & organometallic chemistryMaterials & polymersHAL
  5. Crystalline ASR products: Review of mineral candidates and molecular simulations of their atomic structures, thermodynamic data and thermoelastic properties
    Tulio Honorio, Syrine Razki, Elvys Dias Reis +4
    Cement and Concrete ResearchPeer-reviewedCC BYFull text1 citedInorganic & organometallic chemistryCondensed matterHAL

Cite

BibTeXRIS
BibTeX
@article{kopp2026molecular,
  title = {{Molecular Diradical Spin Qubits in a Crystalline Host as a Platform for Quantum Sensing}},
  author = {Sebastian M. Kopp and Jonathan R. Palmer and Brian T. Phelan and Kathryn R. Peinkofer and Shunta Nakamura and parker watts and Matthew D. Krzyaniak and Michael R. Wasielewski},
  journal = {ACS Central Science},
  year = {2026},
  month = jun,
  doi = {10.1021/acscentsci.6c00525},
  url = {https://doi.org/10.1021/acscentsci.6c00525},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - Molecular Diradical Spin Qubits in a Crystalline Host as a Platform for Quantum Sensing
AU  - Sebastian M. Kopp
AU  - Jonathan R. Palmer
AU  - Brian T. Phelan
AU  - Kathryn R. Peinkofer
AU  - Shunta Nakamura
AU  - parker watts
AU  - Matthew D. Krzyaniak
AU  - Michael R. Wasielewski
PY  - 2026
DA  - 2026/06/29
JO  - ACS Central Science
DO  - 10.1021/acscentsci.6c00525
UR  - https://doi.org/10.1021/acscentsci.6c00525
AB  - Doping a luminescent tris(2,4,6-trichlorophenyl)methyl diradical m(TTM)2 into a host crystal of its diamagnetic precursor m(HTTM)2 creates a molecular color center with enhanced optical-spin interface properties important for quantum sensing. Optical polarization of the |T0⟩ sublevel of the diradical triplet ground state is achieved by spin-selective intersystem crossing from the |T+⟩ and |T-⟩sublevels of the triplet excited state at ambient and cryogenic temperatures. Coherent spin control of m(TTM)2 doped into m(HTTM)2 using pulsed optically detected magnetic resonance (ODMR) spectroscopy results in a ten-fold improvement in ODMR contrast over that observed for randomly ordered m(TTM)2 using continuous-wave ODMR The diradical doped crystals achieve spin coherence times of 2.8, 3.4, and 7.4 s at 294 K, 85 K, and 5 K, respectively. The diradical photoluminescence is sensitive to weak applied magnetic fields independent of temperature, excitation wavelength and dopant concentration, providing a promising pathway towards robust quantum sensing of anisotropic magnetic fields under ambient conditions.
SN  - 2374-7943
SN  - 2374-7951
ER  -