News

time lens

Our on-chip time-lens generates ultrafast pulses and is published in Nature!

November 16, 2022

We have developed a high-performance, on-chip femtosecond pulse source using a tool that seems straight out of science fiction: a time lens.

The device is highly tunable, integrated onto a 2cm by 4mm chip and, because of lithium niobate’s electro-optical properties, requires significantly reduced power than table-top products. The research is published in Nature.

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LN frequency comb

Professor Lončar shared our work on coupled-resonator electro-optic frequency comb

November 11, 2022

Laser Focus World interviewed professor Lončar on how our lab developed on-chip electro-optic frequency combs.

“Long story short: electro-optical combs are making a comeback because they’re more efficient than other combs and can generate an appreciable amount of power,” says Lončar. “And they’re very easy to operate.”

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awslogo

New research from Harvard and AWS will enable higher temperature operation of quantum communications networks

November 3, 2022

Following the announcement of a research alliance between the AWS Center for Quantum Networking and Harvard University, a joint team of Harvard and AWS scientists published a research paper today in Science Magazine discussing production of quantum memories that can operate at higher temperatures – enabling reduced cost and increased reliability for this fundamental component of quantum communication networks.

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fm

Our work on "Mirror-induced reflection in the frequency domain" has been published in Nature Communications!

October 24, 2022

In this work, we show the light that propagate along a frequency synthetic dimension through EO modulation, can be reflected by a frequency domain mirror, which leads to interference and trapped state in frequency domain! 

We create a frequency domain crystal using EO modulation on a thin-film lithium niobate (TFLN) resonator (see our previous work on forming high-dimensional frequency crystals in a single TFLN resonator: https://doi.org/10.1364/OPTICA.395114).
The frequency domain mirror is then formed by mode-...

Read more about Our work on "Mirror-induced reflection in the frequency domain" has been published in Nature Communications!
HPEO

Our paper on "high efficiency and broadband on-chip electro-optic frequency comb generators" has been published in Nature Photonics!

August 29, 2022

Check our work here.

By implementing the general critical coupling for coupled-resonators, that we developed in our previous work, to the EO comb generation, we demonstrate an EO comb with 30% conversion efficiency and 132nm comb span.

The performance of our EO comb generator features a 100-times higher...

Read more about Our paper on "high efficiency and broadband on-chip electro-optic frequency comb generators" has been published in Nature Photonics!
highpowerdiamond11

Our paper on "Diamond mirrors for high-power continuous-wave lasers" published on Nature Communications!

June 11, 2022
We demonstrate monolithic and highly reflective mirrors that operate under high-power CW laser irradiation without damage.We measure reflectivities of greater than 98% and demonstrate damage-free operation using 10 kW of CW laser light at 1070 nm, focused to a spot of 750 μm diameter. In contrast, we observe damage to a conventional dielectric mirror when illuminated by the same beam. Congratulations!!! check the paper here.... Read more about Our paper on "Diamond mirrors for high-power continuous-wave lasers" published on Nature Communications!