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8 votes
2 answers
270 views

Non-entangling two-qubit gates

2 votes
2 answers
991 views

Qiskit CNOT-gate matrix mixup?

4 votes
2 answers
1k views

Is quantum teleportation fully secure (in principle)?

2 votes
0 answers
47 views

Entangling attack on BB84 protocol

0 votes
2 answers
145 views

CNOT gate an elementary example of a single qubit quantum operation

3 votes
1 answer
123 views

What are the possible gates that I can use to vary input states before CNOT?

0 votes
1 answer
85 views

Trouble re-creating quantum psuedo-telepathy

4 votes
1 answer
102 views

How to represent a statevector in Dirac notation form using Qiskit?

0 votes
0 answers
38 views

How to teleport an entangled state via the two-qubit Heisenberg model?

4 votes
1 answer
80 views

Is the post-measurement state always pure after a partial measurement?

0 votes
2 answers
42 views

Why after breaking the entanglement does the phase disk in the second qbit not match the result?

2 votes
1 answer
42 views

"Bell state + x-measurement on qubit 0"

1 vote
1 answer
21 views

How are the singlets distilled in Bennett et al.'s 1995 protocol?

1 vote
3 answers
441 views

How to calculate the amount of entanglement for each qubit in a quantum computer

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