Quantum Computing

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First edit.
Awarded 2097 times.
A measure of entanglement created by a unitary operation
Awarded 9 hours ago
Mutual information of shared state is larger than expectation values
Awarded 2 days ago
Matrices size of n-qubit controlled gates and n+2 states qubit?
Awarded Nov 29 at 19:04
Problem with eigenvalue evaluation algorithm application on matrix $U$
Awarded Nov 28 at 11:55
Frequency of qubits in qiskit simulators
Awarded Nov 27 at 3:45
How to convert stim encoder circuit to a parity check matrix?
Awarded Nov 23 at 23:30
Finding the eigenvalues of a qutrit state
Awarded Nov 21 at 11:42
Question about Nielson & Chuang Problem 9.2
Awarded Nov 21 at 6:21
Adding measurement circuits to the singlet state circuit and want to create single circuit
Awarded Nov 21 at 5:57
Hadamard Gate on Cluster States
Awarded Nov 20 at 12:43
(post deleted or otherwise unavailable)
Awarded Nov 20 at 3:11
Mapping a QUBO onto an observable for use with Qiskit QAOA
Awarded Nov 20 at 1:56
Why is the operator $M_a |x\rangle= |a \cdot x \pmod{N} \rangle $ unitary?
Awarded Nov 19 at 20:43
Phase accumulation for multiple Rabi driving pulses
Awarded Nov 17 at 21:55
Why doesn´t Grover's Algorithm work for my Qiskit circuit?
Awarded Nov 16 at 21:35
(post deleted or otherwise unavailable)
Awarded Nov 16 at 17:20
Are these gate sets proven to be not universal?
Awarded Nov 16 at 13:48
Eigenvalues of a unitary U that implements a periodic function [closed]
Awarded Nov 16 at 5:12
The hidden subgroup problem for finite Abelian groups when $|G| \neq 2^n$
Awarded Nov 15 at 3:51
Is there a notion of approximate entanglement breaking (EB) channels?
Awarded Nov 15 at 2:11
Derivation of Choi-Jamiolkowski isomorphism
Awarded Nov 14 at 14:08
Quantum Process Tomography for 2 qubits
Awarded Nov 13 at 5:57
Is there a general method for calculating expectation values for time-dependent wavefunctions?
Awarded Nov 12 at 19:17
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Awarded Nov 10 at 20:40
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Awarded Nov 9 at 21:35
Single-shot error correction for the surface code with measurement errors
Awarded Nov 9 at 7:57
Inverse Quantum Fourier Transformation
Awarded Nov 8 at 22:04
Double Slit Experiment
Awarded Nov 7 at 22:50
Creating entangled states via Rydberg blockade
Awarded Nov 7 at 19:25
How to know what eigenvalue corresponds to measurements of individual qubits in a multiqubit system?
Awarded Nov 7 at 7:10
When does a Hamiltonian result in the construction of an IC-POVM?
Awarded Nov 6 at 11:17
(post deleted or otherwise unavailable)
Awarded Nov 6 at 1:37
Stim error when measuring detectors
Awarded Nov 5 at 9:45
Is Qiskit's Estimator Primitive running PauliStrings in Parallel?
Awarded Nov 2 at 20:35
Why does the point $(0,0,-1)$ on the bloch sphere correspond to the state $|1\rangle$ and not $-|1\rangle$ or $e^{i \phi}|1\rangle$?
Awarded Oct 27 at 10:04
Inner product in terms of Hadamard and controlled SWAP gates
Awarded Oct 26 at 13:35
Finding entanglement in matrix that is a sum of 4 Bell states
Awarded Oct 25 at 9:37
Quantum Lookup Table circuit
Awarded Oct 24 at 15:25
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Awarded Oct 22 at 19:17
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Awarded Oct 21 at 13:06
Yet another condition for a map to be completely-positive and trace-preserving
Awarded Oct 20 at 21:32
lattice surgery in state picture
Awarded Oct 19 at 23:16
NotFoundError when import tfq [closed]
Awarded Oct 19 at 13:36
What does any 2 Qbit Universal Gate in any Quantum Circuit with an N Qbit Input "operate on" mean mathematically
Awarded Oct 17 at 12:03
Sample detection events with TableauSimulator
Awarded Oct 17 at 5:06
The standard form of a CSS code is CSS?
Awarded Oct 14 at 17:35
How to work with SwitchCaseOp?
Awarded Oct 14 at 16:07
Magic square operator's measurement product
Awarded Oct 12 at 15:47
Qiskit Transpiler Error: Unknown Operation Type
Awarded Oct 12 at 13:05
Variational Quantum Eigensolver (VQE) by scipy minimize in cirq does not work
Awarded Oct 12 at 8:05
Is there a quantum algorithm for this?
Awarded Oct 11 at 1:06
Quantum circuit implementation of shift operator in quantum walk
Awarded Oct 10 at 7:41
Error: cannot pickle '_global_parameters' object while performing state tomography with qiskit [closed]
Awarded Oct 9 at 5:08
An operator that checks the second qubit
Awarded Oct 5 at 6:42
Can we combine the square roots inside the definition of the fidelity?
Awarded Oct 4 at 14:19
How to prove that these equations are correct for $CZ$ and $CX$?
Awarded Oct 4 at 2:01
How to compute the QFI of a thermal state?
Awarded Oct 4 at 0:07
(post deleted or otherwise unavailable)
Awarded Oct 3 at 6:28
Error: module 'rustworkx' has no attribute 'visit' when trying to execute a quantum circuit in a real quantum computer from IBM
Awarded Oct 2 at 21:05
Can you project on an orthogonal basis for a multipartite system using only local measurements and classical communication?
Awarded Sep 30 at 15:42
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