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The exponential growth of computational power demands all-to-all connectivity between qubits. However, practical quantum hardware is constrained by finite-range interactions. To overcome these connectivity limitations, quantum information transport becomes essential. We aim to leverage native interactions to achieve high-fidelity, high-speed, and programmable quantum information transport, enabling scalable quantum information processing.
Rydberg atoms possess two categories of strong interactions: with external fields and with each other. We explore the role of atomic interactions in quantum sensing applications, aiming to mitigate their negative effects and find contexts where those interactions are beneficial.
News
News
DAMOP June 1-5, 2026 • Providence, RI
Tony and Aishik delivered oral presentations, while Yupeng presented a poster.
What did I (the PI) do? Well, the night view is gorgeous...
Awards
Tony (Xinghan) Wang won Dr. Warner Black Award.
This award recognizes excellent practical accomplishments in Physics. This award is given by Ms. Lona Black Koltick (Prof. Koltick's late mother) in memory of her grandfather, Dr. Warner Black. As a medical doctor, farmer, peacemaker, politician, teacher, and a man that served the poor and needy, this award will be given to a physicist that is most likely, in a similar way, to bring physics to the people and help them improve their lives by using a deep knowledge of fundamental and applied physics.
Prof. Liang has won the Air Force Young Investigator Award. Here is the news: Purdue physicist earns Air Force Young Investigator award for quantum optics research: Department of Physics and Astronomy: Purdue University
Group dinner 02/27/2026
We welcome three new undergraduate students joining our research adventure.
MCAW (Midwest Cold Atom Workshop )
Xinghan (Tony) Wang was invited to give a talk at MCAW 2025 - Schedule
Versatile quantum sensing with Rydberg atoms
Rydberg atoms have emerged as a versatile platform for quantum sensing and precision measurement. In the first part of this talk, I will propose and experimentally demonstrate a calibration-free method for full 3D vector polarimetry, enabling simultaneous determination of field amplitude and frequency using a single spectroscopic measurement. In the second part, I will introduce a robust implementation of Rydberg anti-blockade via rapid adiabatic passage. This approach naturally generates avalanche excitation growth, which provides high gain with exceptionally low background, making it a promising tool for detecting rare events.
DAMOP June 16–20, 2025. Portland, OR
Yupeng and Aishik delivered oral presentations, while Tony presented a poster. Most importantly, they all had a great time!
Better late than never! A warm welcome to Junjie Wang, Haiyue Xu, and Jesús Eduardo De la Garza Huerta.
And we work hard, eat hard, and play hard!
And we work hard, eat hard, and play hard!
11/28/2023 Society of Physics Students Professor Dinner
11/28/2023 Society of Physics Students Professor Dinner
Purdue SPS (@purduesps) (instagram.com)
Enjoyed chatting with passionate undergraduates over delicious food.
11/04/2023 Whole team at Midwest Cold Atom Workshop (fourth row in the middle). Tony presented a poster.
11/04/2023 Whole team at Midwest Cold Atom Workshop (fourth row in the middle). Tony presented a poster.
Quantum Science at Purdue Workshop
Quantum Science at Purdue Workshop
Prof. Liang helped organizing this inaugural workshop. Tony ran an information session for Department of Physics and Astronomy, as well as presented a poster.
Quantum Science at Purdue - Physical Chemistry at Purdue (pchem-purdue.github.io)
Annual Quantum Open House
Annual Quantum Open House
quantum_openhouse: Department of Physics and Astronomy: Purdue University
Our annual Quantum Open House was a great success! We have more than 200 people registered the event, 45 faculty and students running lab tours and demos and 30 undergraduate student volunteers.
Yupeng showed the "delayed-choice quantum eraser".
09/18 Group dinner with AMO-QIS seminar speaker Dr. Ivana Dimitrova
"Mad April"
"Mad April"
04/20/2023 Yupeng gave a talk and a lab tour to students from Harrison High School.
04/20/2023 Yupeng gave a talk and a lab tour to students from Harrison High School.
04/25/2023 Aishik presented at the Purdue AMO-QIS seminar.
04/25/2023 Aishik presented at the Purdue AMO-QIS seminar.
04/27-30 Whole group at QSC Summer School. Yupeng presented a poster.
12/03 Quantum Open House open to general public.
12/03 Quantum Open House open to general public.
Prof. Liang co-organized this inaugural event with Prof. Ma and Dr. Sederberg. We plan to continue this as a yearly event and promote awareness of quantum research.
Aishik presented "identifying atoms with light" (emission spectrum).
11/16/2022 Aishik presented a poster at the Departmental Poster session.
11/16/2022 Aishik presented a poster at the Departmental Poster session.
08/04/2022 Yaakov Burton's final day (REU) presentation
08/04/2022 Yaakov Burton's final day (REU) presentation
06/28/2021 Qi-Yu Liang gave a talk at KITP Program: Interacting Topological Matter: Atomic, Molecular and Optical Systems.
06/28/2021 Qi-Yu Liang gave a talk at KITP Program: Interacting Topological Matter: Atomic, Molecular and Optical Systems.
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