A single bit of information in the quantum realm is known as a qubit. A qubit can represent one, zero or the two states at once. It is possible to create a command that causes a controlled interaction among two or more qubits, producing a coherent change in the state of one qubit that is contingent on the state of another. This is the basis of quantum computation. Controlling with spin Theoretically, a quantum computer could be fashioned out of anything.
Any physical system is by definition a quantum mechanical system.
The challenge is to isolate and manipulate the system to function as a computer. Cory, Tseng and their colleagues are among a small handful of researchers using NMR to experiment with qubits. NMR techniques are widely used to study the structure of molecules and to image internal structures within the human body. NMR allows scientists to manipulate the atomic spins of nuclei by applying an electromagnetic pulse to molecules diluted in a liquid. Sending a pulse for a specific amount of time generates a known signal.