
Learn Quantum Computing with Python and IBM Quantum
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The second quantum computing principle used by quantum computers is entanglement. By entangling two or more qubits, we are, in essence, linking the value of one qubit and synchronizing it with one or more other qubits. By synchronizing it, we mean that if we measure (observe) the value of one of the entangled qubits, then we can be sure that the other qubit will have the same value, whether we measure it at the same time or sometime later.
Entanglement is probably one of the most interesting of the three quantum computing principles. This is mainly because it still baffles physicists to this day, with many taking different philosophical sides in the discussion. I won’t bore you with the details, but I will aim to provide you with enough information for you to understand what entanglement is, but not to have a way to prove it to create quantum algorithms and applications. Yes, it sounds confusing, but believe me, the devil is in the detail and...