Find answers to your questions about Quantum Computing or help others by answering their Quantum Computing questions.
I have the state vector $|prangle$ made up of 4 qubits. Say system A is made up of the first and second qubits while system B is made up...
Asked on 09/05/2021
2 answerI want to know whether I can have a operator $A$ which commutes with four other operators $M_1$, $M_2$, $M_3$, and $M_4$ (for instance, drawing...
Asked on 09/05/2021 by Xuemei
2 answerI need a way to add scalar values to a quantum string. Say if$| v rangle = |1 1 0 rangle + |1 0 1 rangle$ ...
Asked on 09/05/2021
3 answerI am currently reading the paper quantum principal component analysis from Seth Lloyd's article Quantum Principal Component Analysis There is the following equation stated.Suppose that on is...
Asked on 09/05/2021 by Nap0leon
1 answerI am trying to check the way qiskit has the noise implemented. I have read how is this theoretically done using quantum channels (see Nielsen and Chuang chapter 8) and...
Asked on 09/05/2021
1 answerWhat is the difference between performing $Z$ operation and performing $e^{-i Zt}$ operation on a state, given that $e^{-i Zt}= mathbb{1} + (-i Zt) + ...$ is...
Asked on 09/05/2021
1 answerThis is a picture from Wiki(https://en.wikipedia.org/wiki/Quantum_logic_gate). Can someone give me a simple example by using two qubits? ...
Asked on 09/05/2021 by WilliamYang
1 answerI am trying to show that for any qubit state p, the following holds: $$I = frac{rho + sigma_xrhosigma_x +sigma_yrhosigma_y + sigma_zrhosigma_z}{2}$$ I have tried different manipulations,...
Asked on 09/05/2021 by evethompson123
7 answerI've read C-NOT gate entangles qubits, but is it only for C-NOT or any arbitrary CU gate (apart from the likes if CI) entangles qubits? ...
Asked on 09/05/2021 by Ajay Rao
1 answerI currently have a tablet I don't have a desktop or laptop to access the IBM Quantum Experience. Do I have to upgrade to personal computer or laptop computer in...
Asked on 09/05/2021 by Jaime Silverio
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