Computation Involve in Quantum Computing

When we talk about classical computers and computing we also talk about bits, logic gates, different registers, integrated circuits, microprocessors and computational algorithm. The same is in Quantum computing where Quantum Bit, Quantum Gates, Quantum Registers, Quantum Circuits, Quantum Bit Simulators and Quantum Algorithms are present.

When it comes to quantum computing it is said that “a process that incorporates interacting physical systems that represent qubits and quantum gates.” The Qubit is described as a vector in a two dimensional Hilbert space that hold quantum information and Quantum Register is comprises of number of qubit as a vector in multidimensional Hilbert space. Quantum gates are Hilbert space operators that rotate the qubit or quantum register vectors to change their state. Quantum Computer Simulator based on the circuit model of quantum computation. In this model quantum computations and quantum algorithms are represented by circuits, which comprise quantum gates and quantum registers.

Quantum computations are modeled and described using a circuit model. In the circuit model of quantum computation the input is the initial state of the qubits that form a quantum register and the computation is broken down in successive steps in which quantum gates act on the state of the quantum register.  The output of the circuit, i.e. the result of the computation, is the probability of measuring each one of the possible quantum register basis states and the phase of each state at each computation step. So, a sequence of computation steps is executed and at the end the final state of the quantum register, which is the computation result, is measured.