In a groundbreaking advancement for photonics and quantum information technology, researchers from MIT alongside collaborators have unveiled an innovative photonic chip platform that precisely broadcasts light from the chip into free space on an unprecedented scale. This cutting-edge development leverages arrays of microscopic structures that curl upward like minuscule, radiant ski jumps, enabling the simultaneous control and emission of thousands of laser beams. This transformative leap promises to catalyze next-generation applications in high-resolution displays, scaled quantum computing, compact Lidar systems, and ultrafast 3D printing.
Traditional photonic chips process data using light confined within optical waveguides on the chip surface. Although these chips excel in speed and bandwidth, a major challenge has been efficiently coupling the light from the chip to the external world. The light’s confinement in high-refractive-index materials and waveguides inhibits straightforward emission into free space, thus limiting system integration with devices requiring precise and scalable light projection. The new MIT-driven platform overcomes this bottleneck by mechanically sculpting the chip’s surface into three-dimensional nanoscale curved emitters, effectively bridging the chip-to-world interface with superior directional emission.
The core innovation arises from fabricating bilayer nanostructures composed of silicon nitride and aluminum nitride that, due to their differing thermal expansion coefficients, spontaneously curl upward upon cooling. This self-assembly process creates thousands of uniform, tiny “ski jumps” that protrude in three dimensions from the chip’s planar surface. Each individual ski jump acts as a nanoscale antenna, emitting coherent laser light into free space with precise angular control. By integrating rapid modulators and waveguide-fed light sources, the researchers can selectively activate and modulate each beam, effectively creating a dynamic matrix of steerable laser pixels.
Harnessing the spatial and temporal control of thousands of these emission sites simultaneously enables extraordinary resolution in projected images. The team successfully demonstrated full-color image projection with pixel arrays densely packed to achieve spatial densities approximately 15,000 times higher than conventional smartphone displays. These displays, rendered in free space above the chip, exhibit remarkable stability without active error correction, decoupling image fidelity from mechanical or thermal fluctuations. This capability holds enormous promise for compact, power-efficient augmented reality glasses and other near-eye display technologies where minimizing size and weight is critical.
Beyond display applications, the platform’s ability to create vast ensembles of controllable laser beams is particularly transformative for quantum technologies. Many quantum computing architectures rely on controlling millions of quantum bits (qubits) with optical signals. Conventional approaches struggle to deliver individual optical addressing at scale. The MIT system provides an elegant solution—akin to operating a million laser pointers simultaneously—with each beam addressable and steerable in real time, paving the way for scalable quantum control and readout in diamond-based qubit arrays and other photonic quantum devices.
The researchers built this work upon the collaborative Quantum Moonshot Program, involving MIT, the University of Colorado at Boulder, MITRE, and Sandia National Laboratories. The program’s long-term vision is to establish scalable quantum computing platforms, and the photonic ski jump emitters solve a crucial hardware gap by delivering optical control to diamond-based qubits. This scalable architecture emulates firing laser beams into free space over a large area, analogous to launching T-shirts into a sports stadium crowd, enabling interaction with millions of discrete light-matter nodes.
A key driver for the scalability and uniformity of the upward-curled emitters is the sophisticated nanofabrication method. By precisely patterning the strain-engineered bilayers, the team tuned the curvature and orientation of each emitter, ensuring coherent beam formation and consistent optical performance. This mechanical self-assembly approach circumvents limitations imposed by planar lithography, opening new design spaces for sculpted optoelectronic interfaces. As a result, the chip-to-world interface transforms from a passive light conduit into an active, programmable optical array.
The dynamic modulation apparatus integrated on the chip enables selective activation of laser beams with high temporal precision. By varying wavelengths and frequencies, the researchers can adjust emission parameters to “paint” detailed patterns of light in midair at near-physical limits of pixel density and brightness. Such precise optical patterning without bulky optics or mechanical scanning components substantially reduces complexity and power consumption for a wide range of photonics applications.
Applications extend into compact Lidar devices crucial for navigation and mapping in robotics and autonomous systems. These photonic ski jump arrays could produce highly directional, steerable laser emission for three-dimensional environmental sensing in a form factor small enough to fit on micro-robots or consumer electronics. The rapid beam steering capability offers improved resolution and scanning rates over traditional microelectromechanical systems (MEMS) Lidar modules, challenging the status quo in environmental perception technologies.
Additionally, the fast reconfigurable light patterns generated by these photonic chips could revolutionize volumetric 3D printing processes based on light-curing resins. Current layer-by-layer printing is time-intensive; simultaneous activation of massive arrays of laser spots could substantially accelerate printing speeds and enable the manufacture of more complex structures with nanoscale precision, presenting a new frontier for additive manufacturing technologies.
Looking ahead, the research team aims to further scale this platform by investigating the uniformity and yield of large emitter arrays, integrating multiple chips into composite systems, and thoroughly testing the devices’ robustness and lifespan under operational stresses. Such efforts are essential to transition this breakthrough from laboratory demonstrations to commercial and industrial-scale applications.
This novel photonic waveguide chip-to-world beam scanning platform stands to become a versatile optical engine, reshaping sectors ranging from consumer electronics to quantum science. By marrying the principles of nanomechanics, integrated photonics, and quantum control, the technology heralds a new era of compact, scalable optical systems with unprecedented control over the emission of light from the nanoscale to macroscopic spaces.
Subject of Research: Nanophotonic chip-to-free-space beam scanning and optical control in quantum and display systems
Article Title: Nanophotonic waveguide chip-to-world beam scanning
News Publication Date: 11-Mar-2026
Web References: DOI: 10.1038/s41586-025-10038-6
Image Credits: MIT
Keywords: Photonics, Nanophotonics, Quantum computing, Applied optics, Nanotechnology
