Robert Calderbank

Robert Calderbank
  • Charles S. Sydnor Professor of Computer Science
  • Professor of Computer Science
  • Director of the Information Initiative at Duke
  • Professor of Mathematics (Joint)
  • Professor of Electrical and Computer Engineering (Joint)
  • Professor of Physics (Secondary)
External address: 140 Science Drive, 317 Gross Hall, Durham, NC 27708
Internal office address: Campus Box 90984, 140 Science Drive, Durham, NC 27708
Phone: (919) 613-7874

Research Areas and Keywords

Algebra & Combinatorics
error-correcting codes, wireless communication, data storage, discrete harmonic analysis, sphere packing, algorithms, data compression, source classification, representation theory
detection and estimation, discrete harmonic analysis
Computational Mathematics
discrete harmonic analysis, algorithms
Number Theory
error-correcting codes, data storage, discrete harmonic analysis, sphere packing, algorithms, representation theory
Physical Modeling
wireless communications, data storage, detection and estimation
error-correcting codes, wireless communications, data storage, detection and estimation, algorithms, data compression, source classification
Signals, Images & Data
error-correcting codes, wireless communication, data storage, discrete harmonic analysis, algorithms, data compression, source classification

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.


Education & Training
  • Ph.D., California Institute of Technology 1980

  • M.S., Oxford University (U.K.) 1976

  • B.S., University of Warwick (England) 1975

Singh, A, Nowak, R, and Calderbank, R. "Detecting weak but hierarchically-structured patterns in networks." Journal of Machine Learning Research 9 (December 1, 2010): 749-756.

Ashikhmin, A, and Calderbank, AR. "Grassmannian Packings From Operator Reed–Muller Codes." Ieee Transactions on Information Theory 56.11 (November 2010): 5689-5714. Full Text

Raginsky, M, Jafarpour, S, Willett, R, and Calderbank, R. "Fishing in poisson streams: Focusing on the whales, ignoring the minnows." 2010 44th Annual Conference on Information Sciences and Systems, Ciss 2010 (June 24, 2010). Full Text

Calderbank, R, Howard, S, and Jafarpour, S. "Construction of a Large Class of Deterministic Sensing Matrices That Satisfy a Statistical Isometry Property." Ieee Journal of Selected Topics in Signal Processing 4.2 (April 2010): 358-374. Full Text

Bajwa, WU, Calderbank, R, and Jafarpour, S. "Revisiting model selection and recovery of sparse signals using one-step thresholding." 2010 48th Annual Allerton Conference on Communication, Control, and Computing, Allerton 2010 (2010): 977-984. Full Text

Wu, Y, Achtzehn, A, Petrova, M, Mähönen, P, and Calderbank, R. "On the effect of feedback delay on limited-rate beamforming systems." GLOBECOM - IEEE Global Telecommunications Conference (2010). Full Text

Calderbank, R, and Jafarpour, S. "Reed Muller sensing matrices and the LASSO (Invited paper)." Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 6338 LNCS (2010): 442-463. Full Text

Wu, Y, Chi, Y, and Calderbank, R. "Compressive blind source separation." Proceedings - International Conference on Image Processing, ICIP (2010): 89-92. Full Text

Wu, Y, and Calderbank, R. "Circulant space-time codes for integration with beamforming." ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings (2010): 2550-2553. Full Text

Zoltowski, MD, Qureshi, TR, Calderbank, R, and Moran, B. "Unitary Design of Radar Waveform Diversity Sets." Handbook on Array Processing and Sensor Networks (2010): 211-230. Full Text