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Markus Heinrich's user avatar
Markus Heinrich's user avatar
Markus Heinrich's user avatar
Markus Heinrich
  • Member for 6 years, 1 month
  • Last seen this week
11 votes
Accepted

Is the Clifford group finite?

11 votes

How can one argue that the $S$-gate is Clifford while $T$-gate is not?

10 votes

Why are there eight $T$ magic state and twelve $H$ magic states?

10 votes

Why does the twirl of a quantum channel give a depolarizing channel?

10 votes
Accepted

Is the Clifford group a semidirect product?

9 votes
Accepted

Prove that adding any non Clifford gate to the Clifford group yields a universal gate set

9 votes
Accepted

Are almost-Clifford circuits almost easy to simulate?

8 votes
Accepted

How to generate all stabilizer states numerically?

8 votes

Why are quantum channels described by linear maps?

8 votes
Accepted

Using Classical Shadow to predict quantum state's fidelity has nothing to do with the dimension of the density matrix?

8 votes

What are the relations between the permutation group and the Clifford group?

8 votes

Are classical shadows useful?

7 votes
Accepted

Where does the Clifford circuits stand in the complexity hierarchy?

7 votes
Accepted

Random quantum states and Schur-Weyl duality

7 votes
Accepted

Stabilizer codes to Classical codes over GF(4)

7 votes
Accepted

How to reason about absorbing Pauli Product rotations into measurements?

6 votes
Accepted

Lower bounds on the number of measurements outcomes required for quantum state tomography

6 votes
Accepted

Proof for Cardinality of the Clifford Group

6 votes
Accepted

Can a single qutrit in superposition be considered entangled?

6 votes

Is the Haar measure invariant under conjugation?

6 votes

How to show that the integral over all Haar states vanishes: $\int|\psi\rangle\,{\rm d}\psi = 0 $?

6 votes
Accepted

What is the Stabilizer of a Code?

6 votes
Accepted

Quantum channels that commute with any unitary channel

6 votes
Accepted

Is this single qubit gate in the Clifford hierarchy?

6 votes
Accepted

Is the Clifford hierarchy finite?

6 votes
Accepted

do local clifford gates preserve code distance?

6 votes

Are these gate sets proven to be not universal?

6 votes
Accepted

Clifford group without the phase gate

5 votes
Accepted

Which Clifford groups are 2-designs?

5 votes

How to sample from a unitary 2-design?