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Related Experiment Video

Updated: Sep 13, 2025

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Published on: April 1, 2020

An on-chip phased array for non-classical light.

Volkan Gurses^1,2, Samantha I Davis^3,4, Raju Valivarthi^3,4

¹Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA, USA. gurses@caltech.edu.

Nature Communications

|July 29, 2025

Summary

This summary is machine-generated.

Researchers developed a chip-based phased array system capable of receiving, imaging, and manipulating non-classical light. This breakthrough enables wireless quantum technologies for enhanced sensing and communication applications.

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Area of Science:

Quantum Science and Technology
Integrated Photonics
Metamaterials

Background:

Wireless links are crucial for expanding quantum technologies.
Phased arrays revolutionized classical wireless communication through directional wave manipulation.
Existing quantum technologies are primarily wired, limiting their reach.

Purpose of the Study:

To demonstrate a chip-based phased array system for free-space quantum signal manipulation.
To create a direct free-space-to-chip interface for reconfigurable quantum links.
To enable wireless quantum sensing and communication.

Main Methods:

Developed an integrated photonic-electronic system with over 1000 components.
Integrated 32 sub-wavelength engineered metamaterial antennas for free-space reception.
Implemented a large-scale array of quantum-limited coherent receivers for simultaneous signal detection.

Main Results:

Successfully detected squeezed light using the phased array system.
Demonstrated a 32-pixel imaging capability of non-classical light.
Achieved spatially configurable reception and manipulation of squeezed light over free space.

Conclusions:

The developed system advances wireless quantum technologies.
This work paves the way for practical applications in quantum communications and sensing.
On-chip integration of phased arrays offers a scalable solution for future quantum networks.