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thespaceman
  • Member for 3 years, 7 months
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4 votes
1 answer
2k views

Which method of executing a multi-control gate is more efficient?

2 votes
2 answers
1k views

My IBMQ job hangs forever?

3 votes
2 answers
433 views

How to intentionally add noise to a Qiskit circuit?

1 vote
1 answer
358 views

How to optimize my HHL algorithm on qiskit?

1 vote
1 answer
312 views

Why does the Qiskit tutorial for the Variational Quantum Linear Solver not work properly?

0 votes
1 answer
283 views

How to force a matrix to be unitary given constraints on some of the elements? [duplicate]

3 votes
1 answer
283 views

How to find the expectation value of several circuits using Qiskit aqua operator logic?

8 votes
1 answer
232 views

Why is HHL the popular choice to solve QLSP and not the Childs et al. (2017) algorithm?

5 votes
3 answers
200 views

When will Qiskit Runtime be available to all users?

2 votes
1 answer
199 views

Why and how is quantum noise predictable?

3 votes
1 answer
193 views

Is it required to input full matrix when using Qiskit HHL algorithm for sparse matrices?

3 votes
1 answer
187 views

Is it possible to compute a matrix inverse for an arbitrary matrix within a subroutine?

0 votes
0 answers
178 views

What does it mean to have a negative cost (aka loss) function?

2 votes
1 answer
140 views

How does this expression from the VQLS paper result in a CZ-gate?

5 votes
0 answers
109 views

What is the best way to use loop statements on a quantum computer?

1 vote
0 answers
94 views

What is the justification for the use of this arbitrary post-processing vector?

2 votes
1 answer
74 views

How can I use the quantum volume to design the scale of my experiment?

0 votes
0 answers
74 views

What does "point-wise addition" mean in the context of this paper?

0 votes
1 answer
72 views

What is the correct way to represent the CNOT gate on a circuit drawing where the target is an arbitrary qubit in a register? [closed]

0 votes
1 answer
51 views

How can I shift elements around in my state vector according to a specific pattern?