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Matrix Index and multiplication rules for Hermitian Pauli group products

mathematics error-correction pauli-gates

answered 8 mins ago DaftWullie 21.4k

3

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1

answer

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Proving $\langle j_2|\langle j_1| U(|0\rangle\!\langle0|\otimes\rho)U^\dagger|j_2\rangle|j_1\rangle =\operatorname{Tr}(M_j\rho)$

mathematics density-matrix

answered 20 mins ago DaftWullie 21.4k

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Open Problems in Quantum Algorithm

algorithm complexity-theory

asked 1 hour ago Omar Ali 101

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What does W stand for in the W entanglement state?

quantum-state entanglement resource-request history

modified 5 hours ago ChainedSymmetry 558

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How to check if a two-qubit gate is entangling?

quantum-gate entanglement mathematics

answered 12 hours ago Sanchayan Dutta 8,446

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Transforming the first Bell state into the other Bell states

quantum-gate quantum-state bell-basis

modified 12 hours ago Sanchayan Dutta 8,446

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Developing quantum circuits for specific quantum chemistry configurations

circuit-construction chemistry

modified 13 hours ago Sanchayan Dutta 8,446

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Understanding shared Bell states from quantum entanglement

quantum-gate quantum-state entanglement teleportation

modified 13 hours ago Sanchayan Dutta 8,446

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78

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How and why does swap test works?

algorithm quantum-gate quantum-state

modified 13 hours ago Sanchayan Dutta 8,446

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How to prepare a specific initial state of three qubits?

programming qiskit cirq

modified 14 hours ago Sanchayan Dutta 8,446

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What design considerations set the frequency bounds for superconducting qubits?

architecture physical-qubit superconducting-quantum-computing

modified yesterday Community♦ 1

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Why does a controlled gate not constitute a measurement?

quantum-gate measurement

modified yesterday ChainedSymmetry 558

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What use has quantum computing been?

technologies applications nisq

modified yesterday Mark S 1,479

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Shor's Code: Understanding how it satisfies Knill Laflamme Theorem

quantum-information error-correction shors-algorithm

modified 2 days ago Anon 16

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