• Quantum Computing Concepts – Quantum Measurement
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    Quantum Computing Concepts – Quantum Measurement

    Quantum mechanics allows us to prepare super positions of different physical configurations. In quantum computers, this means we are allowed to make super positions of quantum digital codes and the amount of information necessary to describe these super positions grows exponentially with the number of qubits. However, not all of this information is accessible to us because the process of quantum measurement poses a fundamental limit. This can be illustrated with the example of a spin which is the simplest kind of quantum bit. Imagine we prepare a super position of spin up and spin down which means the spin is pointing horizontally. So its vertical component is zero. If…