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Is the Hilbert-Schmidt probability simply zero that a generic rank-2 two-qubit (“pseudo-pure”) density matrix is separable?

quantum-state quantum-information entanglement density-matrix

modified 8 hours ago Paul B. Slater 631

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How to prepare a quantum circuit for $\frac{1}{\sqrt{3}}(|00\rangle+|01\rangle+|10\rangle)$ starting from $|00\rangle$

quantum-gate quantum-state circuit-construction entanglement

modified 16 hours ago glS 10.2k

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How can I print out a state vector of a specific wire?

algorithm quantum-state programming quantum-information entanglement

answered Jul 7 at 21:43 user12984287 502

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Connection between the definitions of concurrence for a two-qubit states

quantum-state quantum-information entanglement

modified Jul 6 at 6:21 netflix_and_physics 3

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Joint system of RAB after purification of A into R

quantum-state quantum-information entanglement density-matrix

answered Jul 4 at 14:09 John Watrous 2,838

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Finding phase angle in Q#

quantum-state entanglement q# phase-estimation

answered Jul 3 at 15:47 user12984287 502

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Are inseparable states with positive partial transposition nonlocal?

entanglement non-locality nonclassicality

answered Jul 2 at 10:13 Mateus Araújo 169

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Visualizing “interference” in Quantum Programs

quantum-state entanglement

answered Jul 2 at 9:03 Fleeep 267

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Predicting rotations with many EPR pairs

entanglement

answered Jun 29 at 18:40 Rammus 408

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Question about DIY Quantum Computer Prototype

quantum-gate entanglement physical-qubit deutsch-jozsa-algorithm photonics

answered Jun 29 at 7:33 DaftWullie 30.6k

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Bra-Ket Notation and Proof of a Ket Equation in Two-Party Shared-Entanglement Setting

algorithm quantum-information entanglement measurement

modified Jun 28 at 14:52 glS 10.2k

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What is the intuition behind the following entanglement distillation protocol for continuous variable systems?

entanglement key-distribution state-distillation

modified Jun 28 at 14:31 glS 10.2k

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Creative way to clone quantum data?

entanglement

answered Jun 27 at 12:29 Dripto Debroy 1,353

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Why does the entanglement negativity equal (in magnitude) the sum of the negative eigenvalues?

entanglement textbook-and-exercises entanglement-negativity

modified Jun 27 at 4:11 glS 10.2k

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