Subhash Kak is Regents Professor of Computer Science Department at Oklahoma State University in Stillwater.
His research has spanned the fields of information theory, cryptography, neural networks, and quantum information. He developed the theory of d-sequences for applications to computing and cryptography and he has worked on a variety of problems on data and network security. He is the inventor of a family of instantaneously trained neural networks (for which he received a patent) for which a variety of artificial intelligence applications have been found. He has argued that brain function is associated with three kinds of language: associative, reorganizational, and quantum.
He was the first to look for information metric for a quantum state over thirty years ago. His work on quantum information includes the only all-quantum protocol for public-key cryptography. He has also contributed to quantum computing and proposed a new measure of information for quantum systems. He has also shown how biological memories could have a quantum basis and he has obtained new Bell-type inequalities for quantum mechanics. This work as well as his proposed resolution of the twin paradox have received considerable attention in the popular press.
His other technical contributions include: the first formulation of the discrete Hilbert transform (Proc IEEE, 1970), sampling theorem for Walsh analysis (Electronics Letters, 1970), permutation based speech scrambling (Bell System Tech J, 1977), first proposal for joint encryption and error correction coding (IEEE Symposium on Security and Privacy, 1983), the idea of secret-hardware public key cryptography (Proc IEE, 1986), a proposal for “molecular computing” (Proc of 22nd Annual Conference on Information Sciences and Systems, Princeton, 1988), an independent proposal for a marked-up language for NLP (AI Magazine, 1988), a two-layered mesh array for matrix multiplication (Parallel Computing, 1988), self-indexing of neural memories (Physics Letters A, 1990), the idea of recursive cryptography (Cryptologia, 2002), the use of Pythagorean triples in cryptography (arXiv, 2010), and the number-theoretic Hilbert transform (2013).
He has written on science for the general public and his work has been showcased in the popular media including Discovery and History channels, PBS, Dutch Public TV OHM, and in a documentary on music (www.ragaunveiled.com). He has written on philosophy of mind and showed how recursion plays a fundamental role in art, music and aesthetics.
Applying cryptographic theory to the study of ancient scripts, he showed
that on probabilistic grounds the
He is the author of 12 books which includes "The Architecture of Knowledge." He is also the author of 6 books of verse. These books have been translated into French, German, Italian, Spanish, Korean, and Serbian.
Amongst his awards are British Council Fellow (1976), Science Academy Medal of the Indian National Science Academy (1977), Kothari Prize (1977), UNESCO Tokten Award (1986), Goyal Prize (1998), National Fellow of the Indian Institute of Advanced Study (2001), and Distinguished Alumnus of IIT Delhi (2002).