Quantum Computing
Niel de Beaudrap's user avatar
Niel de Beaudrap's user avatar
Niel de Beaudrap's user avatar
Niel de Beaudrap
  • Member for 6 years, 1 month
  • Last seen more than a month ago
  • Oxford, United Kingdom
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105 Answers

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5 votes

How should we interpret these quantum logic gates as physical observables?

11 votes
Accepted

Why can't a quantum computer strongly simulate itself?

5 votes
Accepted

Quantum teleportation of a state, from one of two bases

4 votes

Understanding quantum circuit diagrams: a circuit that compares two states $|YX\rangle$ and $|AB\rangle$

26 votes
Accepted

How to calculate circuit depth properly?

8 votes

Is there any (really) quantum procedure that's an algorithm and not a Las Vegas algorithm?

19 votes
Accepted

Why can't there be an error correcting code with fewer than 5 qubits?

2 votes

Stabilizer for quantum error correction code

8 votes
Accepted

Are the eigenvalues of an observable always -1 and 1?

9 votes
Accepted

Why is the $N$-qubit stabilizer group abelian?

11 votes

Advances on imperfect quantum copying

5 votes
Accepted

Calculating measurement result of quantum swap circuit

4 votes

Simulation vs Construction of Fredkin gate with Toffoli gates

13 votes
Accepted

How is computation done in a 2D surface code array?

6 votes
Accepted

Relation between $\mathrm{QMA}$ and $\mathrm{P^{QMA}}$

7 votes

Depolarizing channel implementation on IBM Q

9 votes
Accepted

Connection between stabilizer generators and parity check matrices in the Steane code

6 votes
Accepted

When would I consider using an outer product of quantum states, to describe aspects of a quantum algorithm?

4 votes

Is there a simple rule for the inverse of a Clifford circuit's stabilizer table?

5 votes
Accepted

Analyzing the three-polarizing-filter experiment as a quantum circuit

33 votes
Accepted

How to derive the CNOT matrix for a 3-qubit system where the control & target qubits are not adjacent?

6 votes
Accepted

Decomposition of an arbitrary 1-qubit gate into a specific gateset

9 votes

What are the models of quantum computation?

5 votes

Compact way of describing the set of all stabilizer groups for fixed number of physical qubits and encoded logical qubits

8 votes

What's the physical significance of |0⟩ and |1⟩?

6 votes
Accepted

Quantum XOR Cipher Construction

11 votes
Accepted

How to re-create the following circuit image?

3 votes
Accepted

Simplifying Quantum Tensor products with coefficients

14 votes
Accepted

Graphical Calculus for Quantum Circuits

2 votes

Showing the equivalence of two simple {NOT, CNOT} circuits