Quantum Computing Stack Exchange is a question and answer site for engineers, scientists, programmers, and computing professionals interested in quantum computing. It only takes a minute to sign up.

Sign up to join this community
Anybody can ask a question
Anybody can answer
The best answers are voted up and rise to the top

Explore our questions

0 votes
0 answers
6 views

How can I initialize a classic register in qiskit?

0 votes
0 answers
10 views

How to estimate the negative amplitude of multiple qubits?

1 vote
1 answer
13 views

For arbitrary single-qubit unitary gate, does there exist a code such that the given gate is transversal?

1 vote
2 answers
34 views

Access individual qubits of a quantum circuit in qiskit by qubit name

0 votes
1 answer
23 views

general way to decompose a CZ gate on $n$-qubit system

2 votes
1 answer
109 views

How to compute the tensor product in QCL?

0 votes
0 answers
12 views

Parallelize estimation of expectation values in Qiskit

3 votes
2 answers
136 views

Distance of the concatenated quantum error correcting code

1 vote
1 answer
152 views

How is phase kickback possible if qubits are unentangled?

2 votes
1 answer
73 views
+50

Number of logical cycles to implement $R_Z(\theta)$ gates in lattice surgery: why isn't it the number of layers $\times$ the $T$-count in $R_Z$?

1 vote
0 answers
32 views

Can you push a CZ gate through a Toffoli gate?

0 votes
1 answer
23 views

In Qiskit, no state vector after measure and reset

3 votes
1 answer
76 views
+100

Underlying Hamiltonians and pulse level controls of different commercially available quantum computers

1 vote
1 answer
111 views

Get parameters of a CU gate for implementing an erroneous CX gate with fidelity = 0.81

Browse more Questions