Overview
- The study published in Nature on July 1, 2026, reports a combined theoretical and experimental result that identifies a single direct process producing Hawking‑like radiation and shows the emitted light measurably affects the source.
- Researchers created an event‑horizon analogue by sending ultrafast laser pulses through a specially patterned optical fiber so one pulse changed the fiber’s properties for a second pulse.
- The team’s model finds a specific coupling—called a biquadratic interaction—under which Hawking‑like emission arises directly, replacing prior multi‑stage cascade descriptions in this platform.
- Precision measurements detected tiny shifts in the pulse that generated the radiation, providing the first clear laboratory observation in this setup of backreaction, the analogue of black‑hole evaporation.
- The work, led by Lorenzo Procopio with groups in Israel, Mexico and Germany, opens a practical lab route to test questions in quantum gravity while cautioning that analogue results need cross‑platform confirmation before being tied to real astrophysical black holes.