Two-Photon Spontaneous Emission in Atomically Thin Plasmonic Nanostructures
- Univ. Federal do Rio de Janeiro (Brazil); Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Center for Nonlinear Studies (CNLS)
- Univ. of New Mexico, Albuquerque, NM (United States)
- Univ. Federal do Rio de Janeiro (Brazil)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
The ability to harness light-matter interactions at the few-photon level plays a pivotal role in quantum technologies. Single photons—the most elementary states of light—can be generated on demand in atomic and solid state emitters. Two-photon states are also key quantum assets, but achieving them in individual emitters is challenging because their generation rate is much slower than competing one-photon processes. We demonstrate that atomically thin plasmonic nanostructures can harness two-photon spontaneous emission, resulting in giant far field two-photon production, a wealth of resonant modes enabling tailored photonic and plasmonic entangled states, and plasmon-assisted single-photon creation orders of magnitude more efficient than standard one-photon emission. We unravel the two-photon spontaneous emission channels and show that their spectral line shapes emerge from an intricate interplay between Fano and Lorentzian resonances. Enhanced two-photon spontaneous emission in two-dimensional nanostructures paves the way to an alternative efficient source of light-matter entanglement for on-chip quantum information processing and free-space quantum communications.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Laboratory Directed Research and Development (LDRD) Program; National Science Foundation (NSF)
- Grant/Contract Number:
- 89233218CNA000001; ECCS-1710697; DMR-1941680; 20190574ECR; 20180062DR
- OSTI ID:
- 1760577
- Report Number(s):
- LA-UR-20-20456; TRN: US2206027
- Journal Information:
- Physical Review Letters, Vol. 125, Issue 3; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Entangled two-plasmon generation in carbon nanotubes and graphene-coated wires
Ultrafast quantum photonics enabled by coupling plasmonic nanocavities to strongly radiative antennas