Quantum vortices of strongly interacting photons

Lee Drori, Bankim Chandra Das, Tomer Danino Zohar, Gal Winer, Eilon Poem, Alexander Poddubny, Ofer Firstenberg

Research output: Contribution to journalArticlepeer-review


Vortices are topologically nontrivial defects that generally originate from nonlinear field dynamics. All-optical generation of photonic vortices-phase singularities of the electromagnetic field-requires sufficiently strong nonlinearity that is typically achieved in the classical optics regime. We report on the realization of quantum vortices of photons that result from a strong photon-photon interaction in a quantum nonlinear optical medium. The interaction causes faster phase accumulation for copropagating photons, producing a quantum vortex-antivortex pair within the two-photon wave function. For three photons, the formation of vortex lines and a central vortex ring confirms the existence of a genuine three-photon interaction. The wave function topology, governed by two- and three-photon bound states, imposes a conditional phase shift of π per photon, a potential resource for deterministic quantum logic operations.

Original languageEnglish
Pages (from-to)193-198
Number of pages6
JournalScience (New York, N.Y.)
Issue number6654
StatePublished - 14 Jul 2023

All Science Journal Classification (ASJC) codes

  • General


Dive into the research topics of 'Quantum vortices of strongly interacting photons'. Together they form a unique fingerprint.

Cite this