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Let us consider, we can easily prepare 2 distinct single qubit quantum states psi1 and psi2 in quantum registers (q1 and q2) in a quantum circuit. How to find out the entanglement status of these two quantum states using quantum circuit?

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  • $\begingroup$ Are we talking about pure states or mixed states? The answer is much more complicated in the latter case. $\endgroup$ Mar 30, 2023 at 22:47
  • $\begingroup$ I asked a similar question before here. The answer I accepted was mainly about mixed states, but I don't think much is known about the pure state case. $\endgroup$
    – Loic Stoic
    Mar 31, 2023 at 2:14
  • $\begingroup$ Not strictly a circuit but quantumcomputing.stackexchange.com/questions/2263/… could be helpful $\endgroup$
    – 3yakuya
    Mar 31, 2023 at 15:33

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