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Top Questions

4 votes
2 answers
174 views

Does the von Neumann entropy equal the smallest accessible Shannon entropy?

0 votes
1 answer
33 views

How to determine with local measurements which Bell state we have?

0 votes
1 answer
38 views

Can Quantum Computers (not simulators) solve a 4 node TSP?

2 votes
2 answers
35 views

Classical Information Theory vs. Quantum Information Theory

3 votes
2 answers
812 views

How is a quantum simulator able to simulate a quantum mechanical properties on a classical computer?

1 vote
0 answers
34 views

Doesn't a beamsplitter contradict the nocloning theorem?

0 votes
1 answer
15 views

Understanding Paddle Quantum's MBQC simulation

0 votes
2 answers
25 views

Where can I find runtime of ibm quantum gates?

0 votes
3 answers
45 views

AWS braket python sdk: user is not authorized to perform on quantum device

0 votes
0 answers
8 views

qiskit vs dimod: ising matrix in 2 libaries are different

1 vote
1 answer
58 views
+200

What is the conditional min-entropy for diagonal ("classical") matrices?

1 vote
0 answers
19 views

Is there a general parametric transformation matrix form in bloch-space corresponding to the unitary operations on qutrits?

0 votes
1 answer
57 views

What is the difference between $|\Phi^+\rangle=\frac1{\sqrt2}(|0,0\rangle+|1,1\rangle)$ and a mixture of $|00\rangle$ and $|11\rangle$?

0 votes
0 answers
12 views

qiskit: convert from ising result to qubo result?

6 votes
3 answers
306 views

Finite subgroup of $U(4)$ containing a non-Clifford gate and all local Cliffords

4 votes
1 answer
71 views

Estimate run time of Cirq circuit on forthcoming Google quantum computer

4 votes
1 answer
42 views

Is Density Matrix simulation same as Tensor Network simulation?

8 votes
0 answers
50 views

Why was Feynman hesitant about simulating fermions with a quantum computer?

1 vote
3 answers
44 views

What are the differences in using qasm, statevector, and unitary simulators in qiskit?

1 vote
2 answers
716 views

Relation between trace distance and inner product between pure states

1 vote
0 answers
14 views

Does QSVT/QSP require singular/eigen decomposition?

1 vote
1 answer
89 views

Qiskit: Mismatch between run_config.parameter_binds and all circuit parameters

0 votes
0 answers
38 views

Is there a proportionality how the number of quantum error corrections increases with the number of qubits? [closed]

2 votes
1 answer
58 views

What are the practical advantages of quantum GANs with respect to classical ones?

3 votes
0 answers
28 views

Specific relation between the classical Fourier transform for finite abelian groups and the QFT for finite abelian groups

2 votes
1 answer
42 views

I am having problem in executing measurement based quantum computing circuit

0 votes
0 answers
22 views

Why can't one use the phase kickback if the function is not binary?

4 votes
0 answers
42 views

What is a diference between solitons and anyons?

1 vote
1 answer
35 views

The relationship between number of shots and performance of quantum agent

18 votes
11 answers
10k views

Is my background sufficient to start quantum computing?

2 votes
0 answers
14 views

Simulation of non hermitian operators with Qiskit

0 votes
0 answers
27 views

My IBM quantum account has been disabled for no apparent reason [closed]

0 votes
0 answers
21 views

How to understand Tensor observables and Combined measurements from the perspective of quantum mechanics?

2 votes
0 answers
22 views

Efficient quantum algorithms to decompose Hessian matrices into sums of unitaries

4 votes
3 answers
246 views

Where I can read about protein folding on quantum computers with simple examples?

1 vote
0 answers
10 views

Encode Matrix Elements on register

1 vote
2 answers
48 views

How are black-box oracles implemented in Hamiltonian simulation?

4 votes
1 answer
175 views

Preparation of states that correspond to efficiently integrable probability distributions

1 vote
1 answer
145 views

how to prove quantum teleportation can't be achieved by sending only one classical bit

7 votes
2 answers
1k views

What is a Haar random quantum state?

3 votes
2 answers
151 views

Angular Error associated with Quantum Search Algorithm

1 vote
0 answers
23 views

ZX-calculus: Commutation rules for ZH gate

2 votes
1 answer
52 views

Confusion in Aaronson's CHP Paper

1 vote
1 answer
18 views

Where are the multi-qubit openpulse computers?

0 votes
0 answers
62 views

How to train a Quantum Neural network for regression model in supervised learning

7 votes
1 answer
476 views

Relating min-entropy with conditional entropy

4 votes
2 answers
95 views

Why does fault-tolerant transversal phase gate $P$ only work with doubly-even codes?

4 votes
2 answers
89 views

What are the best-known lower bounds on the number of measurements required for quantum state tomography?


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