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Quantum Computing

Necromancer

 Necromancer
Answer a question more than 60 days later with score of 5 or more. This badge can be awarded multiple times.
Awarded 91 times.
general way to decompose a CZ gate on $n$-qubit system
Awarded Jul 8 at 10:21
Tools for creating quantum circuit diagrams
Awarded Jun 23 at 12:15
Explicit form for composition of Choi representation quantum channels
Awarded Jun 11 at 9:27
Review paper on depth, qubits and $T$ gates number on Clifford+T decomposition for various "typical" algorithms
Awarded May 12 at 13:11
What is a maximal number factored by Shor's algorithm so far?
Awarded May 10 at 19:26
Status of hidden shift and hidden subgroup problems
Awarded Apr 23 at 7:27
Which codes have transversal $T$ gate?
Awarded Apr 15 at 16:48
Is the $[\![7,1,3]\!]$ Steane code a surface code?
Awarded Apr 3 at 13:03
What is the "no fast-forwarding theorem"?
Awarded Mar 22 at 0:41
What channels preserve the purity of all pure inputs?
Awarded Mar 17 at 21:51
What kinds of objects are Liouvillian, Lindbladian, and Davies generator?
Awarded Mar 17 at 17:42
What are the best structured courses available online on quantum computing?
Awarded Mar 6 at 15:19
What are the best structured courses available online on quantum computing?
Awarded Mar 6 at 15:05
Introductory material for quantum machine learning
Awarded Mar 6 at 14:36
Do any educational quantum computing toys or devices exist?
Awarded Mar 6 at 1:48
Are all quantum algorithms hidden subgroup algorithms?
Awarded Mar 2 at 2:51
Relation between BQP-Complete and BQP \ PH
Awarded Feb 21 at 21:47
Do we know anything about the computational complexity of the exchange-correlation functional?
Awarded Feb 16 at 19:07
Physical implementation of gates on IBM Q
Awarded Feb 9 at 3:35
Is there any online Bloch sphere simulator?
Awarded Jan 23 at 15:27
Partial Cyclic Permutation with only Toffoli and CNOT gates?
Awarded Nov 30, 2023 at 16:42
When is the square root of a Clifford gate a Clifford gate?
Awarded Nov 23, 2023 at 22:05
Purity of mixed states as a function of radial distance from origin of Bloch ball
Awarded Nov 20, 2023 at 18:37
Has Blockchain made Quantum Money obsolete?
Awarded Nov 12, 2023 at 23:51
What is meant with "shot" in quantum computation?
Awarded Oct 18, 2023 at 19:01
Continued fractions with Shor's algorithm: which convergent?
Awarded Oct 13, 2023 at 17:20
Can we combine the square roots inside the definition of the fidelity?
Awarded Oct 4, 2023 at 15:08
Topological Circuit Simulator
Awarded Jul 18, 2023 at 11:36
Why isn't $Ry(\pi/2)$ gate equivalent to Hadamard gate?
Awarded Jul 11, 2023 at 5:57
Threshold estimate for 7-qubit code with flag-qubit syndrome extraction
Awarded Jul 2, 2023 at 21:33
Is there a lower bound on the average diamond norm of two uniformly random unitaries U1 and U1 of dimension D that are sampled from haar measure?
Awarded Apr 12, 2023 at 20:06
What is a Bacon-Shor code and what is its significance?
Awarded Mar 27, 2023 at 5:15
What are the best structured courses available online on quantum computing?
Awarded Mar 21, 2023 at 1:42
How to implement controlled multiqubit gates in qiskit?
Awarded Mar 19, 2023 at 7:11
What is the quantum circuit equivalent of a (delayed choice) quantum eraser?
Awarded Jan 31, 2023 at 7:26
Arbitrary powers of NOT and SWAP
Awarded Jan 19, 2023 at 18:33
Why are POVMs useful? Are they just an axiomatic way to define measurement?
Awarded Nov 22, 2022 at 9:41
New Hybrid-HHL algorithm vs VQLS
Awarded Nov 20, 2022 at 14:33
How to find the operator sum representation of the depolarizing channel?
Awarded Nov 13, 2022 at 9:27
Is there any online Bloch sphere simulator?
Awarded Nov 10, 2022 at 15:40
How do I show that a two-qubit state is an entangled state?
Awarded Nov 6, 2022 at 2:05
How is the surface of a Bloch sphere a Hilbert space?
Awarded Sep 29, 2022 at 10:42
Is there a simple, formulaic way to construct a modular exponentiation circuit?
Awarded Sep 2, 2022 at 12:40
What precisely is the quantum extended Church-Turing thesis?
Awarded Aug 30, 2022 at 1:27
What precisely is the quantum extended Church-Turing thesis?
Awarded Aug 30, 2022 at 1:27
Review paper on depth, qubits and $T$ gates number on Clifford+T decomposition for various "typical" algorithms
Awarded Aug 9, 2022 at 12:21
What is a Bacon-Shor code and what is its significance?
Awarded Jul 25, 2022 at 22:43
How to implement gate error mitigation in Qiskit?
Awarded May 17, 2022 at 13:34
What is the "Stinespring Dilation"?
Awarded Apr 14, 2022 at 17:02
What is the status of confirming the existence of anyons?
Awarded Mar 25, 2022 at 11:17
Can you make anyons in 3 dimensions using rings?
Awarded Mar 24, 2022 at 20:49
Is Connes' Embedding Problem akin to the word problem for finitely presented groups?
Awarded Feb 24, 2022 at 15:35
IBM Q devices scheduling of gates with different durations
Awarded Feb 9, 2022 at 2:55
Expected repetitions of the quantum part of Shor's algorithm
Awarded Jan 29, 2022 at 13:11
Quantum circuit for computing fidelity
Awarded Jan 3, 2022 at 9:42
Number of Qubits Required for Simulation of Caffeine and Penicillin Molecules
Awarded Nov 8, 2021 at 18:50
What are the best structured courses available online on quantum computing?
Awarded Oct 28, 2021 at 12:16
What is the meaning of the state $|1\rangle-|1\rangle$?
Awarded Sep 30, 2021 at 6:07
Quantum machine learning after Ewin Tang
Awarded Sep 23, 2021 at 16:26
What exactly is the relation between the Holevo quantity and the mutual information?
Awarded Jul 10, 2021 at 23:31
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