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Robert Calderbank

Charles S. Sydnor Distinguished Professor of Computer Science
Computer Science
Campus Box 90984, 140 Science Drive, Durham, NC 27708
140 Science Drive, 317 Gross Hall, Durham, NC 27708

Overview


Robert Calderbank is Director of the Information Initiative at Duke University, where he is Professor of Electrical Engineering, Computer Science and Mathematics. He joined Duke in 2010, completed a 3 year term as Dean of Natural Sciences in August 2013, and also served as Interim Director of the Duke Initiative in Innovation and Entrepreneurship in 2012. Before joining Duke he was Professor of Electrical Engineering and Mathematics at Princeton University where he also directed the Program in Applied and Computational Mathematics.

Before joining Princeton University Dr. Calderbank was Vice President for Research at AT&T. As Vice President for Research he managed AT&T intellectual property, and he was responsible for licensing revenue. AT&T Labs was the first of a new type of research lab where masses of data generated by network services became a giant sandbox in which fundamental discoveries in information science became a source of commercial advantage

At Duke, Dr. Calderbank works with researchers from the Duke Center for Autism and Brain Development, developing information technology that is able to capture a full spectrum of behavior in very young children. By supporting more consistent and cost-effective early diagnosis, the team is increasing the opportunity for early interventions that have proven very effective.

At the start of his career at Bell Labs, Dr. Calderbank developed voiceband modem technology that was widely licensed and incorporated in over a billion devices. Voiceband means the signals are audible so these modems burped and squeaked as they connected to the internet. One of these products was the AT&T COMSPHERE® modem which was the fastest modem in the world in 1994 – at 33.6kb/s!   

Together with Peter Shor and colleagues at AT&T Labs Dr. Calderbank developed the group theoretic framework for quantum error correction. This framework changed the way physicists view quantum entanglement, and provided the foundation for fault tolerant quantum computation.

Dr. Calderbank has also developed technology that improves the speed and reliability of wireless communication by correlating signals across several transmit antennas. Invented in 1996, this space-time coding technology has been incorporated in a broad range of 3G, 4G and 5G wireless standards. He served on the Technical Advisory Board of Flarion Technologies a wireless infrastructure company founded by Rajiv Laroia and acquired by Qualcomm for $1B in 2008.

Dr. Calderbank is an IEEE Fellow and an AT&T Fellow, and he was elected to the National Academy of Engineering in 2005. He received the 2013 IEEE Hamming Medal for contributions to coding theory and communications and the 2015 Shannon Award.

Current Appointments & Affiliations


Charles S. Sydnor Distinguished Professor of Computer Science · 2014 - Present Computer Science, Trinity College of Arts & Sciences
Professor of Computer Science · 2010 - Present Computer Science, Trinity College of Arts & Sciences
Professor of Electrical and Computer Engineering · 2010 - Present Electrical and Computer Engineering, Pratt School of Engineering
Professor of Mathematics · 2010 - Present Mathematics, Trinity College of Arts & Sciences
Associate of the Duke Initiative for Science & Society · 2020 - Present Duke Science & Society, University Initiatives & Academic Support Units
Member of the Duke Quantum Center · 2024 - Present Duke Quantum Center, Pratt School of Engineering

In the News


Published April 8, 2025
Duke Researchers at the Forefront of the Next Generation of Wireless
Published April 28, 2022
Four Faculty Elected to American Academy of Arts & Sciences
Published October 21, 2020
Duke to Lead Center to Develop U.S. Air Force Wireless Communications Protocols

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Recent Publications


Key Generation and Secrecy Analysis Using OTFS for TDD Systems

Journal Article IEEE Transactions on Wireless Communications · January 1, 2025 Physical layer key generation techniques aim to extract secret keys from the information contained in wireless channels. However, existing key generation schemes often rely on time-frequency domain waveforms for channel estimation, which not only makes sec ... Full text Cite

Spatially-Coupled QLDPC Codes

Journal Article Quantum · January 1, 2025 Spatially-coupled (SC) codes is a class of convolutional LDPC codes that has been well investigated in classical coding theory thanks to their high performance and compatibility with low-latency decoders. We describe toric codes as quantum counterparts of ... Full text Cite

Zak-OTFS with Interleaved Pilots to Extend the Region of Predictable Operation

Journal Article IEEE Transactions on Vehicular Technology · January 1, 2025 When the delay period of the Zak-OTFS carrier is greater than the delay spread of the channel, and the Doppler period of the carrier is greater than the Doppler spread of the channel, the effective channel filter taps can simply be read off from the respon ... Full text Cite
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Recent Grants


RTG: Linked via L-functions: training versatile researchers across number theory

Inst. Training Prgm or CMEKey Faculty · Awarded by National Science Foundation · 2023 - 2028

CIF: Small: NSF-DST: Zak-OTFS - How to Make Communication and Radar Sensing More Predictable in 6G

ResearchPrincipal Investigator · Awarded by National Science Foundation · 2024 - 2027

Learning to Prevail: Communication in Contested and Adversarial Environments

ResearchPrincipal Investigator · Awarded by Air Force Research Laboratory · 2020 - 2026

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Education, Training & Certifications


California Institute of Technology · 1980 Ph.D.
Oxford University (United Kingdom) · 1976 M.S.
University of Warwick (United Kingdom) · 1975 B.S.