Chinese Team Boosts Nonlinear Optics 20x With 300-Nanojoule Quantum Light
Updated
Updated · Interesting Engineering · May 31
Chinese Team Boosts Nonlinear Optics 20x With 300-Nanojoule Quantum Light
4 articles · Updated · Interesting Engineering · May 31
Nature published a study led by East China Normal University’s Jian Wu showing bright squeezed vacuum amplified a nonlinear optical process by more than 20 times without raising average laser power.
A 300-nanojoule quantum-light pulse produced the same tunneling ionization effect in sodium atoms as a conventional laser pulse with over 20 times the effective intensity.
The gain came from altering photon statistics rather than pulse energy: bright squeezed vacuum creates brief spikes in instantaneous intensity, enabling strong interactions while limiting thermal or structural damage.
The team also tuned interaction strength by changing the light’s quantum statistical properties, suggesting future ultrafast systems may optimize fluctuations as well as raw power.
That could matter for attosecond science, high-harmonic generation and ultrafast imaging, where experiments often push optical components close to damage limits.
With a 20x laser boost, how will this Chinese quantum leap reshape the global technology race?
Does using 'quantum light' to replace raw laser power come with hidden costs that limit its practical use?
Achieving 20x Quantum Enhancement in Nonlinear Tunneling: The 2026 BSV Light Milestone
Overview
In 2026, researchers led by Jian Wu at East China Normal University achieved a major breakthrough in nonlinear optics by demonstrating a new method to enhance laser interactions using bright squeezed vacuum (BSV) quantum light. Their experiments with isolated sodium atoms showed that BSV light’s unique quantum properties can boost nonlinear tunnelling effects by more than 20 times, all without increasing the average laser power. This overcomes long-standing limits caused by high-intensity lasers and material damage, opening new possibilities for attosecond science and ultrafast imaging. The work marks a significant step forward in controlling extreme light-matter interactions.