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

At the heart of this innovation lies the intricate interplay between DNA origami—a technique that allows for the precise folding of DNA strands into bespoke nanostructures—and monolayer molybdenum disulfide (MoS₂), a two-dimensional transition metal dichalcogenide known for its exceptional electronic and optical properties. By harnessing the programmability of DNA origami, the research team was able to engineer molecular assemblies that interact with MoS₂ at the nanoscale, establishing deterministic sites for quantum light emission.

Traditional quantum emitters, such as those found in defects within two-dimensional materials or isolated quantum dots, often suffer from stochastic placement and variability in emission characteristics, limiting their scalability and practical use. The deterministic approach developed by the team overcomes these challenges by leveraging molecular precision. The DNA origami scaffold acts as a nanoscale template, guiding the placement of specific molecules that induce localized excitonic states in the MoS₂ lattice, which serve as stable, reproducible quantum light sources.

The process begins with the meticulous design of DNA origami structures that can host functional molecules with nanometer accuracy. These structures are synthesized using staple strands that fold a long single-stranded DNA into target shapes, a method refined over the past two decades but now adeptly applied in quantum materials engineering. When these DNA constructs are deposited onto the MoS₂ monolayers, they facilitate the close positioning of molecules that modify the electronic landscape of the MoS₂, creating quantum-confined excitonic states.

Excitons in monolayer MoS₂ exhibit tightly bound electron-hole pairs with remarkable stability and distinctive optical signatures. By precisely manipulating these excitons using the molecular attachments structured by DNA origami, the researchers achieved light emission at desired locations and with properties controlled at the quantum level. This determinism enables the realization of single-photon sources critical for quantum cryptography protocols and photonic integrated circuits.

Advanced characterization techniques, including photoluminescence spectroscopy and scanning probe microscopy, confirmed the presence of these tailored quantum emitters. The experiments revealed sharp emission peaks and photon antibunching behavior characteristic of single-photon emission. Furthermore, the emission wavelengths could be tuned by varying the molecular species attached to the DNA origami, showcasing a versatile platform for quantum photonic device engineering.

The implications of this work extend beyond fundamental science. Deterministic quantum emitters integrated on technologically relevant two-dimensional materials open pathways for fabricating scalable quantum photonic arrays and networks. Devices incorporating these emitters could facilitate on-chip quantum information processing, overcoming current bottlenecks posed by randomly distributed quantum sources that complicate device fabrication and integration.

Moreover, the use of DNA origami brings the advantages of biological self-assembly and programmability into the realm of inorganic quantum materials, bridging two traditionally distinct fields. This interdisciplinary approach highlights the potential of biomolecular engineering to solve complex material challenges, fostering new classes of hybrid nanodevices that capitalize on the strengths of both biological and solid-state worlds.

The study also sheds light on the stability and durability of these hybrid quantum emitters under ambient conditions—an essential factor for real-world applications. The molecular attachments mediated by DNA origami were found to be robust, maintaining their quantum emission properties over extended periods, which underscores their suitability for deployment in practical quantum technologies.

From a theoretical perspective, the interaction between the DNA-engineered molecules and the MoS₂ lattice introduces exciting new avenues for modeling quantum interactions at interfaces between biological molecules and two-dimensional semiconductors. This invites further exploration into tuning quantum states through chemical functionalization, potentially enabling dynamic control schemes for quantum light sources.

Future research inspired by these findings may explore expanding the variety of molecular species incorporated via DNA origami, and extending this technique to other two-dimensional materials with different band structures and optical properties. Such versatility will be vital in optimizing quantum emitter characteristics tailored to specific applications, from sensing magnetic fields at the nanoscale to facilitating quantum entanglement generation.

The team’s efforts demonstrate that the synthesis and positioning of quantum emitters can be achieved with unprecedented precision and reproducibility. This technological mastery transforms the traditionally empirical process of creating quantum light sources into a programmable fabrication platform, accelerating the advent of commercially viable quantum photonic devices.

As quantum technologies edge closer to mainstream implementation, the ability to deterministically place quantum emitters with nanoscale accuracy represents a crucial milestone. This DNA origami-mediated strategy not only fulfills this need but does so by integrating uniquely biological assembly techniques with the cutting-edge domain of 2D materials science, opening portals to innovations we are just beginning to envision.

In sum, this seminal work by Li et al. exemplifies the power of convergent nanotechnology, where molecular precision engineering intersects with quantum material science, forging unprecedented tools for the quantum revolution. The deterministic quantum light emitters fashioned from DNA origami–MoS₂ hybrids stand poised to catalyze breakthroughs across quantum communication, sensing, and computation, heralding a bright and programmable quantum future.

Article References:
Li, Z., Zhao, S., Melchakova, I. et al. Deterministic quantum light emitters in DNA origami–engineered molecule–MoS₂ hybrids. Light Sci Appl 15, 159 (2026). https://doi.org/10.1038/s41377-026-02204-w