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Indian-origin researcher studies gold nanoclusters for quantum technology
The findings could help develop photonic chips that operate at telecommunication wavelengths used in modern communication infrastructure.
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Malvika Choudhary - Sat, 01, Nov 2025
- 14:44 EDT
- 25
Abhrojyoti Mazumder / cmu.edu
Indian origin researcher, Abhrojyoti Mazumder is leading research that explores how gold nanoclusters could be used to build faster and more reliable quantum computers and communication networks.
The findings could help develop photonic chips that operate at telecommunication wavelengths used in modern communication infrastructure.
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A doctoral candidate in chemistry at Carnegie Mellon University, Mazumder’s work focuses on designing these nanoclusters — tiny materials made of 24 to 96 gold atoms — to transmit light signals with higher precision through fiber-optic systems.
“We hope in the future, they can be integrated into photonic chips engineered to operate at telecommunication wavelengths, enabling seamless interaction with the spectral bands used in fiber-optic telecom systems,” Mazumder said.
Unlike other nanoscale materials such as quantum dots or carbon nanotubes, gold nanoclusters can be synthesized with uniform size and chemical composition, which makes them more predictable and less prone to error. Their defect-free structure could make it easier to build quantum and photonic chips on a larger scale, with lower energy consumption.
Mazumder’s experiments also showed that certain gold nanoclusters can efficiently generate single photons, a key requirement for quantum computing. “They can generate single photons efficiently with a very high purity,” he said.
His research contributes to ongoing studies in quantum information science and secure communications — areas considered strategically important for technological innovation. Peteanu said Mazumder’s experiments are helping uncover how light interacts with gold nanoclusters.
“The experiments Abhro is performing will teach us a lot about the basic mechanism of light emission in these clusters and will therefore support the development of more mature applications, including as fluorescent labels for bioimaging,” she said.
Mazumder was recently awarded the McWilliams Fellowship, a competitive recognition for graduate researchers advancing front-line science in areas like nanotechnology. He said he plans to use the fellowship to continue studying the practical uses of gold nanoclusters in quantum technologies.
A native of Kolkata, India, Mazumder earned his bachelor’s and master’s degrees in chemistry from Jadavpur University before joining Carnegie Mellon in 2022. He has previously worked on research projects at Osaka University, Japan, and the CSIR–CECRI Madras Unit in Tamil Nadu, India.
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