{
  "id": 8835218,
  "title": "Optically addressable and programmable spins in DNA",
  "url": "https://urgent.news/2026/09/20/optically-addressable-and-programmable-spins-in-dna",
  "topic": "science",
  "section": "Science",
  "published": "2026-09-20T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.09.14.751464v1?rss=1"
  },
  "original_language": "en",
  "account": "Optically addressable spins, typically explored in semiconductors and bio-chemical systems, form the backbone of quantum technologies. However, current platforms do not possess scalable and accessible site-specific programmability. In this study, researchers demonstrate that DNA can function as a nanoscale scaffold for optically addressable spin systems. By integrating flavin chromophores into synthetic oligonucleotides, scientists create spin-correlated radical pairs (SCRPs) that can be controlled through radiofrequency (RF) fields and detected via optically detected magnetic resonance (ODMR). Pulses of ODMR enable the observation of spin dynamics on sub-microsecond timescales under normal conditions, while the DNA sequence design allows for ultra-precise adjustments of both ODMR response and associated spin chemistry with a resolution of one base. The secondary structure of DNA introduces an additional layer of functionality: the formation of a duplex reverses the pulsed ODMR contrast, signifying a shift in the spin multiplicity of the SCRP precursor. The synthetic nature and chemical programmability of oligonucleotides as hosts for optically addressable spins are showcased through various proof-of-concept applications, which include sensing, programmable SCRP positioning, and spin-enhanced molecular beacons. These findings establish DNA as a versatile scaffold for engineered spin systems, providing a foundation for future applications spanning quantum sensing, programmable spin arrays, bio-imaging, and RF-controlled molecular switches for gene regulation.",
  "summary": "Optically addressable spins, traditionally studied in semiconductors and, more recently, in (bio)chemical systems, are central to quantum technologies, yet existing platforms lack scalable and accessible site-specific programmability. Here, we show that DNA can serve as a functional nanoscale scaffold for optically addressable spin systems. By incorporating flavin chromophores into synthetic…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}