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Welcome to Ge Quantum Theory Group
Welcome to Ge Quantum Theory Group
We study fundamental aspects of quantum information and their implementations via atomic, solid-state, and optical systems. We are interested in exploring fundamental limits allowed by quantum mechanics to access information (quantum sensing), transfer information (quantum communicating), and process information (quantum computing). The goal of our group is to discover these fundamental limits and design useful protocols for quantum information science and engineering!
We study fundamental aspects of quantum information and their implementations via atomic, solid-state, and optical systems. We are interested in exploring fundamental limits allowed by quantum mechanics to access information (quantum sensing), transfer information (quantum communicating), and process information (quantum computing). The goal of our group is to discover these fundamental limits and design useful protocols for quantum information science and engineering!
September 2024
Research Opportunities
Research Opportunities
High School Students: Summer internships for those who want to unravel our Quantum World!
Undergraduates: interested in quantum information science and engineering, we have appropriate projects for STEM students (Computer Science, Biological Science, Engineering, Math, Physics, etc.)
Graduates: interested in quantum information (including quantum algorithms & quantum sensing protocols) and/or atomic, molecular, and optical (AMO) physics
Graduates: interested in quantum information (including quantum algorithms & quantum sensing protocols) and/or atomic, molecular, and optical (AMO) physics
If you are interested in doing theoretical research in quantum information science, please don't hesitate to contact wenchao.ge@uri.edu with your CV and your transcript(s).
If you are interested in doing theoretical research in quantum information science, please don't hesitate to contact wenchao.ge@uri.edu with your CV and your transcript(s).
News
News
July 2025 Wenchao received the NSF CAREER Award on Trapped-ion Quantum Information Processing with Phonon Modulations! This is the most prestigious award presented by the National Science Foundation to support junior faculty who exemplify the role of teacher-scholars. Looking forward to the next 5 years and beyond!
July 2025 Wenchao received the NSF CAREER Award on Trapped-ion Quantum Information Processing with Phonon Modulations! This is the most prestigious award presented by the National Science Foundation to support junior faculty who exemplify the role of teacher-scholars. Looking forward to the next 5 years and beyond!
June 2025 Ge Quantum Theory Group organized a five-day Quantum Summer Camp. Thanks, Tanay, Evan, Sean, and India, for your participation! Thanks to our group members, Luke, Spencer, and Salman, for the support and the lectures! Thanks, Feruz and Dean, for the lab tours! Thanks, Len and Amy, for all the support! See Photos for more details.
June 2025 Ge Quantum Theory Group organized a five-day Quantum Summer Camp. Thanks, Tanay, Evan, Sean, and India, for your participation! Thanks to our group members, Luke, Spencer, and Salman, for the support and the lectures! Thanks, Feruz and Dean, for the lab tours! Thanks, Len and Amy, for all the support! See Photos for more details.
June 2025 Congratulations to Luke for his first-author paper! We designed a protocol to achieve more robustness against timing errors without using extra laser power! For more details, see Phys. Rev. A 111, 062422 (2025)
June 2025 Congratulations to Luke for his first-author paper! We designed a protocol to achieve more robustness against timing errors without using extra laser power! For more details, see Phys. Rev. A 111, 062422 (2025)
May 2025 Wenchao received the Early Career Faculty Research and Scholarship Excellence Award for his work in the life sciences, physical sciences, and engineering. This is the most prestigious research award for early-career faculty at URI.
May 2025 Wenchao received the Early Career Faculty Research and Scholarship Excellence Award for his work in the life sciences, physical sciences, and engineering. This is the most prestigious research award for early-career faculty at URI.
April 2025 URI World Quantum Day Celebration on April 11th with guest speakers from academia and industry, including Suhail Zubairy, Tina Brower-Thomas, Ilya Safro, David Biersach, Vincenzo Tamma, and Christopher Lirakis. We had many formal and informal discussions about quantum physics, artificial intelligence, and even perspectives in life!
April 2025 URI World Quantum Day Celebration on April 11th with guest speakers from academia and industry, including Suhail Zubairy, Tina Brower-Thomas, Ilya Safro, David Biersach, Vincenzo Tamma, and Christopher Lirakis. We had many formal and informal discussions about quantum physics, artificial intelligence, and even perspectives in life!
March 2025 Wenchao gave an invited talk to the Department of Math, URI on the Introduction of Quantum Information Science and distributed quantum metrology.
March 2025 Wenchao gave an invited talk to the Department of Math, URI on the Introduction of Quantum Information Science and distributed quantum metrology.
January 2025 Wenchao attended the 54th Winter Colloquium on the Physics of Quantum Electronics (PQE), gave an invited talk on distributed quantum metrology, and skied for the first time!
January 2025 Wenchao attended the 54th Winter Colloquium on the Physics of Quantum Electronics (PQE), gave an invited talk on distributed quantum metrology, and skied for the first time!
December 2024 Together with Kurt Jacobs from the Army Research Lab, Wenchao completed the manuscript "Heisenberg-Limited Continuous-Variable Distributed Quantum Metrology with Arbitrary Weights". Luke completed his first manuscript titled "Power-optimized amplitude modulation for robust trapped-ion entangling gates: a study of gate-timing errors"!
December 2024 Together with Kurt Jacobs from the Army Research Lab, Wenchao completed the manuscript "Heisenberg-Limited Continuous-Variable Distributed Quantum Metrology with Arbitrary Weights". Luke completed his first manuscript titled "Power-optimized amplitude modulation for robust trapped-ion entangling gates: a study of gate-timing errors"!
October 2024 Prof. Simone Colombo and his students, Esteban, Kaley, Joseph, and Jack, visited our group and URI Physics Department. Simone is an experimentalist at UConn specializing in Ultracold Atoms, Cavity QED, and Laser Technology. Simone gave a beautiful talk titled "Observing our Universe using Quantum and Atomic Sensors".
October 2024 Prof. Simone Colombo and his students, Esteban, Kaley, Joseph, and Jack, visited our group and URI Physics Department. Simone is an experimentalist at UConn specializing in Ultracold Atoms, Cavity QED, and Laser Technology. Simone gave a beautiful talk titled "Observing our Universe using Quantum and Atomic Sensors".
October 2024 Wenchao gave two invited talks at Brown University and the University of Connecticut on enhancing trapped-ion quantum information processing.
October 2024 Wenchao gave two invited talks at Brown University and the University of Connecticut on enhancing trapped-ion quantum information processing.
October 2024 Congratulations to Spencer and Tommy for their publication in Physical Review A on quantifying nonclassicality of mixed Fock states! Way to go!
October 2024 Congratulations to Spencer and Tommy for their publication in Physical Review A on quantifying nonclassicality of mixed Fock states! Way to go!
September 2024 Ge Quantum Theory Group went to Marina Park for picnic and kayaking!
September 2024 Ge Quantum Theory Group went to Marina Park for picnic and kayaking!
September 2024 Welcome Salman Shahid and Jeremy Garant to our group!
September 2024 Welcome Salman Shahid and Jeremy Garant to our group!
September 2024 Wenchao is accepted into the Fall 2024 cohort of RISE-UP Innovation & Entrepreneurship Faculty Fellow @ URI! The goal is to integrate an entrepreneurial mindset into teaching and research.
September 2024 Wenchao is accepted into the Fall 2024 cohort of RISE-UP Innovation & Entrepreneurship Faculty Fellow @ URI! The goal is to integrate an entrepreneurial mindset into teaching and research.
September 2024 Press release of our work "Classical-Nonclassical Polarity of Gaussian States" has been posted on Phys.org--Theoretical research establishes unified way to quantify vital quantum properties.
September 2024 Press release of our work "Classical-Nonclassical Polarity of Gaussian States" has been posted on Phys.org--Theoretical research establishes unified way to quantify vital quantum properties.
August 2024 Wenchao receives the NSF ExpandQISE award in collaboration with Dr. Ilya Safro, U of Delaware, to explore Quantum Correlations in Quantum Approximate Optimization Algorithms! "The NSF ExpandQISE program is simultaneously strengthening the quantum workforce and investing in the scientific and technological advances that will be the foundation for a quantum-enabled future.” See the News Release. We are looking for a postdoc, graduate research assistants, and undergraduate research assistants. Email to wenchao.ge@uri.edu for more details.
August 2024 Wenchao receives the NSF ExpandQISE award in collaboration with Dr. Ilya Safro, U of Delaware, to explore Quantum Correlations in Quantum Approximate Optimization Algorithms! "The NSF ExpandQISE program is simultaneously strengthening the quantum workforce and investing in the scientific and technological advances that will be the foundation for a quantum-enabled future.” See the News Release. We are looking for a postdoc, graduate research assistants, and undergraduate research assistants. Email to wenchao.ge@uri.edu for more details.
June 2024 Spencer wrote his first manuscript in our group on "Quantifying Nonclassicality of Mixed Fock States" together with Tommy. We present a numerical method of linear programming for calculating the ORT measure for mixed Fock states and extract analytical ansatze of the ORT measure for rank-3 and rank-4 states.
June 2024 Spencer wrote his first manuscript in our group on "Quantifying Nonclassicality of Mixed Fock States" together with Tommy. We present a numerical method of linear programming for calculating the ORT measure for mixed Fock states and extract analytical ansatze of the ORT measure for rank-3 and rank-4 states.
June 2024 Our work with Jiru and Suhail on "Classical-Nonclassical Polarity of Gaussian States" has been published in Phys. Rev. Lett.!! Our work introduces a new concept that provides a unified quantification of single-mode nonclassicality and bipartite entanglement. We showed that a conservation relation exists for the total classical-nonclassical polarity of multi-mode Gaussian states within linear optical systems.
June 2024 Our work with Jiru and Suhail on "Classical-Nonclassical Polarity of Gaussian States" has been published in Phys. Rev. Lett.!! Our work introduces a new concept that provides a unified quantification of single-mode nonclassicality and bipartite entanglement. We showed that a conservation relation exists for the total classical-nonclassical polarity of multi-mode Gaussian states within linear optical systems.
April 2024 David, Garrett, and Simon presented their UG Capstone Projects. Best of luck to their future endeavors!
April 2024 David, Garrett, and Simon presented their UG Capstone Projects. Best of luck to their future endeavors!
April 2024 Dr. Jing Yang (Nordita, Sweden) visited the Physics Department at URI during World Quantum Day
April 2024 Dr. Jing Yang (Nordita, Sweden) visited the Physics Department at URI during World Quantum Day
March 2024 Dr. Suhail Zubairy (Texas A&M University) visited the Physics Department at URI
March 2024 Dr. Suhail Zubairy (Texas A&M University) visited the Physics Department at URI
February 2024 Quantum Journal Club is launched in the Physics Department at URI
February 2024 Quantum Journal Club is launched in the Physics Department at URI
November 2023 Congratulations to Luke for passing his Master Thesis Defense!
November 2023 Congratulations to Luke for passing his Master Thesis Defense!
October 2023 Spencer, Luke, Garrett and Tommy presented at APS New England Section 2023 Fall Meeting in Kingston, RI
October 2023 Spencer, Luke, Garrett and Tommy presented at APS New England Section 2023 Fall Meeting in Kingston, RI
September 2023 Welcome Dr. Spencer Rogers to the group as a Postdoctoral Researcher and Garrett Hauser, Zoey Fiorillo, & Simon Manlove as Undergraduate Students!
September 2023 Welcome Dr. Spencer Rogers to the group as a Postdoctoral Researcher and Garrett Hauser, Zoey Fiorillo, & Simon Manlove as Undergraduate Students!
August 2023 Welcome Garrett Jepson to the group as a Graduate Student!
August 2023 Welcome Garrett Jepson to the group as a Graduate Student!
May 2023 Congratulations to Tommy for passing the M.S. Comprehensive Exam!
May 2023 Congratulations to Tommy for passing the M.S. Comprehensive Exam!
May 2023 Congratulations to Luke for passing the Ph.D. qualifying exam!
May 2023 Congratulations to Luke for passing the Ph.D. qualifying exam!
May 2023 Welcome David Weber to the group! Congratulations on his Undergraduate Summer Fellowship!
May 2023 Welcome David Weber to the group! Congratulations on his Undergraduate Summer Fellowship!
March 2023 Our work in collaboration with John Bollinger's group at NIST on improving quantum simulation and quantum sensing in a trapped ion crystal is published in Phys. Rev. A. The work is also reported by URI News Rhody Today.
March 2023 Our work in collaboration with John Bollinger's group at NIST on improving quantum simulation and quantum sensing in a trapped ion crystal is published in Phys. Rev. A. The work is also reported by URI News Rhody Today.
March 2023 Luke gave his first APS talk in Amherst College at Spring 2023 Meeting of the APS New England Section.
March 2023 Luke gave his first APS talk in Amherst College at Spring 2023 Meeting of the APS New England Section.
January 2023 Our work on the power of nonclassical states for amplifying metrology precision is published in npj Quantum Inf.
January 2023 Our work on the power of nonclassical states for amplifying metrology precision is published in npj Quantum Inf.
January 2023 Congratulations to Luke for passing a qualifying exam!
January 2023 Congratulations to Luke for passing a qualifying exam!
September 2022 Dr. Ge recieves an NSF grant on quantum sensing using nonclassical states
September 2022 Dr. Ge recieves an NSF grant on quantum sensing using nonclassical states
September 2022 Welcome Tommy to the group as a graduate student!
September 2022 Welcome Tommy to the group as a graduate student!
October 2021 Dr. Ge received an award from SIU Morris Library's inaugural Open Textbook Faculty Incentive Program
October 2021 Dr. Ge received an award from SIU Morris Library's inaugural Open Textbook Faculty Incentive Program
September 2021 Dr. Ge received a collaborative grant on developing an undergraduate curriculum on Quantum Information Science, Technology, Engineering, Arts, and Mathematics (QuSteam)!
September 2021 Dr. Ge received a collaborative grant on developing an undergraduate curriculum on Quantum Information Science, Technology, Engineering, Arts, and Mathematics (QuSteam)!
September 2021 Congratulations to Terry-Ann on her internship at NASA!
September 2021 Congratulations to Terry-Ann on her internship at NASA!
August 2021 Our work on the distribution of Gaussian quantum entanglement is published in Physical Review A.
August 2021 Our work on the distribution of Gaussian quantum entanglement is published in Physical Review A.
June 2021 Dr. Ge presented at the DAMOP meeting virtually of the recent results on unifying the metrological powers. We proved that phase sensing quantum advantage is equivalent to that of Force sensing.
June 2021 Dr. Ge presented at the DAMOP meeting virtually of the recent results on unifying the metrological powers. We proved that phase sensing quantum advantage is equivalent to that of Force sensing.
May 2021 Our work on the first demonstration of *Quantum Amplification* of boson-mediated interactions is published in Nature Physics!
May 2021 Our work on the first demonstration of *Quantum Amplification* of boson-mediated interactions is published in Nature Physics!
Check also the Nature Physics News about our work. https://www.nature.com/articles/s41567-021-01195-2
Check also the Nature Physics News about our work. https://www.nature.com/articles/s41567-021-01195-2
May 2021 Finished lecturing on Introduction to Quantum Entanglement
First (virtual) Group Meeting
First (virtual) Group Meeting
Left column: Terry-Ann, Thayne, Michael
Right column: Wenchao, Luke, Kenneth
**02/26/2021**
Course teaching at SIUC
Course teaching at SIUC
The PI of our group will be teaching a specialized course on quantum entanglement in Spring 2021. This course is offered by the Department of Physics at Southern Illinois University to teach students the basic knowledge about quantum entanglement and its applications for quantum communication, quantum computing, and quantum sensing. The level of this course is appropriate for both graduate students and advanced undergraduates with engineering or science backgrounds.
Our recent work in collaboration with Suhail Zubairy on evaluating single-mode nonclassicality has been published in Phys. Rev. A. We use an operational resource-theoretic measure of nonclassicality of a single-mode quantum state to study the abilities of different classes of states for quantum-enhanced sensing. In particular, we find a class of states that are as good as squeezed vacuum states, which are important for certain sensing tasks including the laser interferometer gravitational-wave laboratory (LIGO) experiments. **10/09/2020**
Our recent work in collaboration with experimentalists Shaun Burd, Daniel Slichter, John Bollinger, and many others is available on arXiv. We have demonstrated over 3-fold enhancements of interaction strength between trapped-ion qubits using parametric amplification of the ion's external motion. Our idea can increase entangling-gate fidelities and can potentially reduce the energies used in coupling the trapped-ion qubits and the external motion. Our method could enable exploration of new parameter regimes and enhanced quantum information processing. **09/29/2020**
Last Updated: 07/14/2025
Last Updated: 07/14/2025
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