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Robin Blume-Kohout

Portrait de Robin Blume-Kohout
Sandia National Laboratories

Area of Research:
Phone: x6561

My research is centered on the theory and practice of quantum measurement, and seeks to understand how observers obtain information about quantum systems.  This program spans both quantum information theory and the foundations of quantum mechanics, and much of my research has applications in experimental quantum information science.  I've written papers on quantum estimation, decoherence, and the structure of quantum states and processes.  For the last couple of years, I've been trying to understand the fundamental rules of information transfer and knowledge -- the fruits of which are new results on quantum error correction and quantum data compression.

Research Interests

My research is centered on the theory and practice of quantum measurement, and seeks to understand how observers obtain information about quantum systems. This program spans both quantum information theory and the foundations of quantum mechanics, and much of my research has applications in experimental quantum information science. I've written papers on quantum estimation, decoherence, and the structure of quantum states and processes. For the last couple of years, I've been trying to understand the fundamental rules of information transfer and knowledge -- the fruits of which are new results on quantum error correction and quantum data compression.

Positions Held

  • 2008 Department of Applied Mathematics, University of Waterloo Instructor
  • 2005-2007 Institute for Quantum Information, Caltech Postdoctoral Fellow
  • 2001 Institute for Theoretical Physics (Santa Barbara) Graduate Fellow
  • 2001 - 2005 Theoretical Division, Los Alamos National Laboratory Graduate Researcher
  • 1998 - 2005 Department of Physics, University of California (Berkeley) Graduate Student

Recent Publications

  • "The structure of preserved information in quantum processes", RBK, H.K. Ng, D. Poulin, and L. Viola; PRL 100, 030501 (2008), arXiv: 0705.4282
  • "Quantum Darwinism in quantum Brownian motion: the vacuum as a witness", RBK and W. H. Zurek; PRL 101, 240405 (2008), arXiv: 0704.3615
  • "Quantum Darwinism: Entanglement, branches, and the emergent classicality of redundantly stored quantum information", RBK and W. H. Zurek; PRA 73, 062310 (2006), arXiv: quant-ph/0505031
  • "A simple example of Quantum Darwinism: Redundant information storage in many-spin environments", RBK and W. H. Zurek; Found. Phys. 35, 1857 (2005), arXiv: quant-ph/0408147
  • "Symmetric Informationally Complete Quantum Measurements", J. M. Renes, RBK, A. J. Scott, C. M. Caves; J. Math. Phys. 45, 2171 (2004), arXiv: quant-ph/0310075
  • "Exponential speed-up with a single bit of quantum information: Testing the quantum butterfly effect", D. Poulin, RBK, R. Laflamme, H. Ollivier; PRL 92, 177906 (2004), arxiv:quant-ph/310038
  • "Decoherence from a Chaotic Environment: An Upside Down "Oscillator" as a Model", RBK and W. H. Zurek; PRA 68, 032104 (2003), arXiv: quant-ph/0212153
  • "Compatibility of quantum states", D. Poulin and RBK; PRA 67, 010101(R) (2003), arXiv: quant-ph/0205033
  • "Climbing Mount Scalable: Physical-Resource Requirements for a Scalable Quantum Computer", RBK, C. M. Caves, I. H. Deutsch; Found. Phys. 32, 1641 (2002), arXiv: quant-ph/0204157
  • "Streaming universal distortion-free entanglement concentration", RBK, S. Croke, D. Gottesman, arXiv: 0910.5952
  • "Gate fidelity fluctuations and quantum process invariants", E. Magesan, RBK, J. Emerson, arXiv: 0910.1315
  • "Optimal, reliable estimation of quantum states", RBK, arXiv: quant-ph/0611080
  • "Accurate quantum state estimation via `Keeping the experimentalist honest'", RBK, P. Hayden, arXiv: quant-ph/0603116
  • "Physical-resource demands for scalable quantum computation", C. M. Caves, I. H. Deutsch, RBK; proceedings of the SPIE Conference on Fluctuations and Noise in Photonics and Quantum Optics (Santa Fe, 2003). arXiv: quant-ph/0304083

Seminars

  • "Educated Guesses about Quantum Light." Oregon College of Optics
  • "Tomography: What is it good for?" Mathematics in Experimental QIP (IQC)
  • "What does one quantum system know about another?" Benasque Center for Science
  • "What is the use of tomography?" Theory Canada (Montreal)
  • "Preserved Information in Quantum States & Dynamics." Coogee Beach QIT Workshop (Sydney)
  • "Preserved Information in quantum processes." CWI (Amsterdam)
  • "Quasi-orthonormal bases for quantum information processing." SPIE Optics East (Boston)
  • "Information-preserving structures." IQC Colloquium
  • "Unknown states as random states." Taming the Quantum World (IQC, Waterloo)
  • "All kinds of information." McGill University
  • "Keeping the Experimentalist Honest." Cambridge University (DAMPT)
  • "Whaddya mean, my information is quantum?" University of Alaska-Fairbanks (Tutorial)
  • "What's a quantum computer going to be good for?" University of Alaska-Fairbanks Colloquium
  • "Quantum Darwinism in quantum Brownian motion." Benasque Center for Science
  • "What's wrong with tomography, and how to fix it." University of Southern California
  • "Information-Preserving Structures." Dartmouth College
  • "Accurate quantum state estimation." NIST (Gaithersburg)
  • "Characterizing decoherence with Information-Preserving Structures." Griffith University (Brisbane)
  • "Keeping the Experimentalist honest." Coogee Beach QIT Workshop (Sydney)
  • "Accurate quantum state estimation." Caltech-IQI
  • "Quantum Darwinism." Los Alamos National Laboratory
  • "Quantum Darwinism: Information flow from system to environment." Benasque Center for Science
  • "Who moved my information?" Kenyon College
  • PIRSA:09100011, "The Art of Guesstimation" (Panel). Quantum to Cosmos Festival
  • PIRSA:09100089, "Quantum Knowledge." PIAF '09: New Perspectives on the Quantum State
  • PIRSA:08100072, "MUBS in Infinite-Dimensional Hilbert Spaces." Seeking SICs: A Workshop on Quantum Frames and Designs
  • PIRSA:08080058, "Bayesian methods versus Maximum-Likelihood" (Panel). Quantum Estimation: Theory and Practice
  • PIRSA:08070044, "Overview of Quantum Information." ISSYP 2008
  • PIRSA:07120016, "Introduction to Quantum Information." Young Researchers Conference
  • PIRSA:07100027, "Finding out about quantum systems." PI Colloquium
  • PIRSA:07060039, "Quantum Darwinism: Classicality via Objectivity." Operational Quantum Physics and the Quantum-Classical Contrast
  • PIRSA:06120042, "Reliable Quantum State Estimation from Quantum Scoring Rules." Young Researchers Conference