Research On Implement And Application Of Superconductivity Quantum Bit Based On Superconductivity Quantum Interference Device

Complying with the superposition principle of quantum mechanics, micro-particles can be at any of its eigenstates superposition of states.so based on two-level micro-particles of quantum physics,a single binary bit can store two data. Quantum parallel computing is algorithm to get function value corresponding to any variables of a function by unitary operations on quantum bits leading to information processing simultaneously on the same operation in same way. Based on parallel computing, Grove quantum search algorithm and Shor quantum factoring algorithm makes large numbers of quantum computers can solve some of the problems classical computer can not solve.Superconducting qubits is one of the promising physical systems to build quantum computers. Not only superconducting quantum bits can be strongly coupled to each other, but also can easily be controlled and have very good anti-interference ability, so superconducting qubits have attracted considerable attention in recent years for implement quantum computation and quantum information. It is the superconducting quantum interference device as two-level system approximately operating in a particular state. However, the superconducting quantum interference device quantum dynamic equation generally can not find the analytical solution, so numerical methods is employed to seek evidence of its spectrum and the intrinsic wave function.In this paper, it's shown that how the quantum dynamic equation does be derived from classical dynamic equation. Then, the finite difference method is employed to get numerical solution of quantum dynamic equations of superconducting quantum interference device at the static magnetic field bias and offset alternating magnetic field respectively. The numerical results show that the superconducting quantum interference device operating at the appropriate bias voltage or magnetic field,for the lowest two levels are merged, can be viewed as a simple two-level system, thus Hamiltonian of the system is simplified to function for the spin operator. By external field, the effective manipulation of superconducting quantum bit is a necessary precondition to implement quantum computing in superconducting system. This article discusses that where the rotating wave approximation, adiabatic approximation and the generalized rotating wave approximation can describe appropriately the law of superconducting qubits interacting with externals field, based on this law the superconducting quantum bit manipulation can be implemented effectively. Zitterbewegung of electonic neutrino is observed in PC SQUID inside Cavity which simulates Dirac equation of electonic or neutrino...