I am doing my research in the area of "Quantum Computing". My research supervisors are Prof. Apoorva Patel and Prof. H.R.Krishnamurthy. I also collaborated with Dr. Lov Grover, famous for his invention of quantum search algorithm, at Bell Labs, USA in 2005. My research papers can be found on the Quantum Physics archive of Los Alamos National Laboratory. Very soon, you will see here additional notes on my research.

What is QC

Quantum Computing(QC) offers us a powerful computational tool by exploiting superposition and entanglement of quantum states of a system. The two famous examples of this "Quantum Power" are Shor's factoring algorithm and Grover's search algorithm. Using Shor's factoring algorithm and a large scale quantum computer (which at present, we don't have), we can find out the factors of a large number very quickly compared to our present classical computers and this implies breaking of the popular RSA cryptosystem. The quantum search algorithm provides us a square-root speedup compared to classical one. Just to give an example, if classical computer takes 7.5 billion seconds (about 236 years) to search a particular unsorted database, a quantum one can do it only in 1 day (square root of 7.5 billion seconds is 86602 seconds, which is about 1 day). At present, we don't have a quantum computer which can deal with more than 7 qubits and to solve a practical problem we need to deal with around 10000 qubits. Research is going on in both experimental part and theoretical part. Quantum Cryptography is another major application of quantum power, which gives us a secure cryptographic protocol.

It's just a very very brief introduction and if you want to know more, what else, do a Google search on quantum computing.

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