Abstract
Traditional and modern cryptosystems purely rely on mathematics and their algorithms based on fundamental process of factoring large integers into their primes, which is said to be intractable. But this type of cryptography vulnerable to both evolutions in mathematics and development of high computing power which can easily reverse one way functions. Now the requirement is to design a new mechanism whose reverse computation is not possible for any system. The robust security mechanism is necessary. The combination of quantum mechanism and cryptography make it possible to develop such a secure communication systems that utilized different energy spectra for the transmission of information. The combination of quantum mechanics and cryptography gives birth to quantum cryptography. Quantum cryptography is one of the most remarkable application of quantum information theory. To measure the quantum state of any system is not possible without disturbing that system. The facts of quantum mechanics on traditional cryptosystems leads to a new protocol, algorithms and achieving maximum security for systems. The aim of this article is to apply quantum spinning and rotation along with finite state machine to develop an efficient cryptosystems for text encryption and decryption.