News

Professor Cheng Wang Visits the Lončar Group

December 02, 2025

This Tuesday, the Lončar Group was delighted to welcome back Professor Cheng Wang, an alumnus of our group and now a highly accomplished Associate Professor in the Department of Electrical Engineering at City University of Hong Kong. Professor Wang...

Participation at the Houches Physics School on Lithium Niobate Integrated Photonics

May 23, 2025

The event brought together leading researchers in the field to discuss the current state and future directions of LNOI technology, spanning topics from simulation and fabrication to classical and quantum optical applications. Our Group Picture at Les...

Our Review Article "Integrated electro-optics on thin-film lithium niobate" is published in Nature Reviews Physics!

April 25, 2025

As a versatile photonic platform, thin-film lithium niobate (TFLN) stands out for its strong electro-optic effects. In our review, we introduce the fundamental principles of electro-optics, highlight the present state-of-the-art technologies and...

High-Precision Fabrication of TFLN Frequency Mixers

April 06, 2025

By reversing the typical process -- performing poling after waveguide definition -- our team enabled precise metrology and correction of geometric errors. This approach led to 96% of devices hitting the target wavelength (737 nm) after post-processing...

We Achieve Record-Breaking Quantum Emission Efficiency in Diamond Photonic Crystal Waveguides!

April 05, 2025

The innovation lies in our ability to create a platform that can efficiently couple color centers in diamond with optical modes, allowing for the manipulation of quantum information. Color centers are tiny defects within the diamond lattice that exhibit...

Our Photon Router: Superconducting Quantum Transduction

April 02, 2025

Our transducer device bridges the large energy gap between microwave and optical photons, allowing optical signals -- sent from miles away -- to control microwave qubits. It is the first device to achieve control of a superconducting qubit using light...

2024 Group Outing Event: Apple Picking Adventure!

October 19, 2024

The group enjoyed a delightful apple-picking outing on October 19, 2024, generously sponsored by Marko and thoughtfully organized by Anna Shelton. Together, we gathered at a scenic New England farm, embracing the beauty of autumn and celebrating the apple...

Summer Chalk Talk has began!

June 10, 2024

The Summer Chalk Talk has been initiated, organized by our postdoc Dr. Shima Rajabali as well as many of our group members (Harvard SEAS Photonic Club). This series of talks features the interactive & insightful scientific discussion and the delicious &...

Dr. Giampaolo Pitruzzello has visited our lab and given talk at Harvard photonic symposium!

April 30, 2024

On April 30th, Dr. Giampaolo Pitruzzello, the senior editor of Nature Photonics, visited us and the Harvard photonic community. Dr. Pitruzzello visited labs at Harvard, gave a talk on "Inside Nature Photonics: Recent Publishing Trend and Writing Tips"...

Dylan Renaud has given a talk on "Nanoscale Photonics" as a 2024 Harvard Horizon Scholar!

April 09, 2024

As a 2024 Harvard Horizon Scholar, Dylan Renaud has given a talk "Nanoscale Photonics: The Power of Tiny Devices for Solving the World’s Largest Challenges" on April 9th, presenting our group's research on thin-film lithium niobate modulators to the...

Dylan Renaud has been chosen as a 2024 Harvard Horizon Scholar!

December 19, 2023

Harvard Griffin GSAS introduces Dylan as one of the chosen 2024 Harvard Horizons Scholars. Selected by the Harvard Horizons Faculty Fellows, these scholars epitomize the exceptional researchers within Harvard’s PhD community. This year's group of eight...

Our work on deterministically strained color centers in diamond is featured on the cover of Applied Physics Letters!

December 18, 2023

Researchers in our lab have deterministically generated strained SiVs in diamond using high-stress silicon nitride thin films. This exciting work paves the way for higher-temperature operation of these systems. Link to the paper.