The best compact emitters of light are quantum dots—semiconductor nanocrystals with quantum mechanical behaviours thanks to their small size (2–10 nanometres). The emitted light goes in all directions and has poor polarisation, but placing it next to nanostructures enables directional emission or circular polarisation. Simultaneous control of both direction and polarisation, however, has never been achieved. In their paper “Unidirectional chiral emission via twisted bi-layer metasurfaces”, Associate Prof Wu and her team set out to bridge this gap.

A U.S. Naval Research Laboratory (NRL) multi-disciplinary team developed a new paradigm for the control of quantum emitters, providing a new method for modulating and encoding quantum photonic information on a single photon light stream.

On November 13th 2024, Quandela, the CNRS, Université Paris-Saclay, and Université Paris Cité inaugurated at the Centre for Nanoscience and Nanotechnology (CNRS/Université Paris-Saclay/Université Paric Cité) the QDlight associated research laboratory focusing on research in quantum photonics, which is to say the art of controlling light in the quantum regime inside nanoscale devices. Over the course of six years, the teams will expand scientific cooperation with a view to developing next generation quantum light emitters, as well as their applications in quantum information technology to secure unprecedented computing power.

For a wide variety of emerging quantum technologies, such as secure quantum communications and quantum computing, quantum entanglement is a prerequisite. Scientists at the Max-Planck-Institute for the Science of Light (MPL) have now demonstrated a particularly efficient way in which photons can be entangled with acoustic phonons. The researchers were able to demonstrate that this entanglement is resilient to external noise, the usual pitfall of any quantum technology to date. They published their research in Physical Review Letters.

Adtran today announced that Switzerland’s Federal Institute of Metrology METAS has successfully deployed its OSA 3300 HP, improving national timekeeping performance and supporting critical scientific research. As the industry’s first high-performance optical cesium atomic clock, the OSA 3300 HP sets new standards for accuracy and stability, while assuring 10 years of operation. It also strengthens Switzerland’s contribution to Universal Time Coordinated (UTC), bolstering its position in the global timekeeping network. By providing an ultra-stable frequency source, the OSA 3300 HP offers major advances in the field of metrology, ensuring that Switzerland remains at the forefront of precision measurement and timekeeping.

ANELLO Photonics, the creator of the SiPhOG and a leading provider of cutting-edge integrated silicon photonics solutions for navigation in GPS-denied environments today announced that it has been awarded a Phase II SBIR contract for the U.S. Army. During the eighteen-month period, ANELLO will demonstrate the capabilities of its innovative silicon photonics optical gyroscope technology and sensor fusion technology for navigation in environments without GPS.

Quantum Computing Inc. (“QCi” or the “Company”), an innovative, integrated photonics and quantum optics technology company, today announced that the Company has secured its first order for its thin film lithium niobate (TFLN) photonic chip foundry. The order, placed by a prominent research and technology institute based in Asia, underscores the growing global demand for QCi’s advanced fabrication technology of TFLN and its ability to produce high-performance photonic integrated circuits (PICs) and nanophotonic devices. This milestone highlights QCi’s commitment to accelerating the widespread adoption of TFLN and positioning it as a vital component of the future telecom, datacom, and quantum landscape.

Purdue University has been selected by the U.S. Department of Energy (DOE) to lead the Quantum Photonics Integrated Design Center (QuPIDC) Energy Frontier Research Center (EFRC).

IonQ, a leader in the quantum computing industry, announced today a partnership with NKT Photonics, a subsidiary of Hamamatsu Photonics, to procure next-generation laser systems for IonQ’s trapped-ion quantum computers and networking equipment. The partnership involves NKT Photonics developing and delivering three prototype optical subsystems to IonQ in 2025, designed to support the commercialization of IonQ’s data center-ready quantum computers – such as IonQ Tempo and future barium-based systems.

Quantum Computing Inc. (“QCi” or the “Company”), an innovative, integrated photonics and quantum optics technology company, today released financial results for the three and nine-month periods ended September 30, 2024.