Hi,(adsbygoogle = window.adsbygoogle || []).push({});

I am a student from the Netherlands in 6V, the year before university, and I'm doing research on Quantum Computing.

However, I have difficulty understanding the four states of two entangled qubits,

$$\left|00\right> \\

\left|01\right> + \left|10\right> \\

\left|01\right> - \left|10\right> \\

\left|11\right>$$

This Veritasium video states that two qubits have these four states, and calls the ##\left|01\right> + \left|10\right>## the ##\left|T_0\right>## state, and ##\left|01\right> - \left|10\right>## the singlet state, ##\left|S\right>##.

However, what does the difference between the minus and plus signify? I understand that in both states the qubits have the property of being opposite to one another, but that's it.

It would be greatly appreciated if someone could help me understand this difference!

Kind regards,

Isaiah van Hunen

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# B Understanding the difference between |01>+|10> and |01>-|01>

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