Welcome to Loh Lab @ CQT

Our lab at the Centre for Quantum Technologies, National University of Singapore, is interested in using arrays of tweezer-trapped atoms as quantum "lego" blocks to simulate advanced materials.

Understanding our research focus

Quantum simulation is the modeling of nature with quantum building blocks like atoms and molecules.

Quantum simulation allows us to study interesting quantum materials while working towards building powerful computers.

Arrays of optical tweezers provide a powerful platform for controlling individual quantum building blocks in a scalable manner.

Atoms, molecules, lasers, microwaves, electric fields, magnetic fields, some epic code, and a huge dose of fun!

Our research highlights

Our team develops methods to scale up atom arrays, a promising platform for quantum computation and simulation. These include using D1 magic wavelengths to enable efficient imaging and demonstrating a new parallel atom-rearrangement algorithm. With the latter, we realized large defect-free arrays with hundreds of singly-trapped atoms in arbitrary geometries.

Meet the team

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News Updates

Sep 2022

Our manuscript reporting a new algorithm to efficiently assemble large-scale defect-free atom arrays is now up on the arXiv! Our parallel sort-and-compression algorithm (PSCA) offers a reduced move complexity (only scaling as the square root of the target array size) and naturally avoids collisions between atoms. Here is a defect-free image of 225 singly-trapped atoms pristinely arranged in a triangular array, obtained by applying our new algorithm.

Jan 2023

Juan-Yi and Jintao join our group as undergraduate interns. Welcome on board!

Dec 2022

Time for an end-of-the-year group party. Best wishes for a productive 2023!

Dec 2022

Huanqian takes part in the NUS S&T Agora fireside chat on quantum technologies.

Nov 2022

We give two more lab tours this month: one to the NUS Board of Trustees and another to a delegation from the Ministry of Finance and the National Research Foundation.

Oct 2022

We are happy to host Emeritus Senior Minister Goh and Minister Josephine Teo (Ministry of Communications and Information) in two separate visits to our lab this month.

(Photo credit: NUS Facebook page)

Oct 2022

Fan Jia, who did his PhD in the group of Dajun Wang at the Chinese University of Hong Kong, joins us as a postdoc. A warm welcome to you, Fan!

Sep 2022

An gives an invited talk and Mujahid gives a contributed talk at the Institute of Physics Singapore (IPS) annual meeting.

Sep 2022

The first PhD student graduates from Loh Lab! Congratulations to Krishna for his successful defense. An exciting future awaits you with your new quantum sensors job lined up!

Aug 2022

Michael and Jiacheng (Scarlett) join us as PhD students. Michael is formerly a NUS undergraduate and Jiacheng comes from Sichuan University. We are delighted to have you both!

Jul 2022

Congratulations to Wen Jun for winning both the Lijen Industrial Development Medal and the Outstanding Undergraduate Research Prize for his honors project!

Jun 2022

Huanqian gives an invited talk at the Optica Quantum 2.0 conference.

Jun 2022

The APS annual DAMOP meeting is here! Weikun gives a contributed talk and poster on our defect-free 225-atom arrays, while Luheng presents a poster on the sodium experiment.

May 2022

Invited by Prof. Gyuboong Jo, Huanqian gives a talk at the Hong Kong University of Science and Technology (HKUST) Institute for Advanced Study-Center for Quantum Technologies (IAS CQT) seminar.

Apr 2022

A four-PI team led by Huanqian (with co-PIs Prof Gong, Prof Lee, and Prof Lim) has been awarded about SGD 3.8 million under the Singapore Quantum Engineering Program. We are ready to perform some exciting quantum simulations with our atom arrays!