How to measure a qubit state?
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Quantum algorithms can be represented as quantum circuits, just like in classical computing. Each qubit may be represented as a line, as normal bits are, and they can be manipulated and entangled with each other through the use of quantum gates, analogous to logic gates. An example of a circuit demonstrating quantum teleportation is shown below
Each qubit is set to an initial value of zero or one, as in classical computing. When the qubits are measured at the end (shown by the squares containing a needle), the result is again either a zero or a one. The clever stuff happens in between - once quantum gates are applied to qubits, the superposition state is created.
Addition with quantum computing is possible, but is fairly overkill, as it can already be done very efficiently with classical computers. The power of quantum computing comes into play when special quantum algorithms, such as Shor’s and Grover Search are used.
Each qubit is set to an initial value of zero or one, as in classical computing. When the qubits are measured at the end (shown by the squares containing a needle), the result is again either a zero or a one. The clever stuff happens in between - once quantum gates are applied to qubits, the superposition state is created.
Addition with quantum computing is possible, but is fairly overkill, as it can already be done very efficiently with classical computers. The power of quantum computing comes into play when special quantum algorithms, such as Shor’s and Grover Search are used.
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