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peachnuts
  • Member for 2 years, 7 months
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  • Montpellier, France
37 votes
2 answers
12k views

What is the "surface code" in the context of quantum error correction?

21 votes
3 answers
3k views

What are magic states?

  • 777
20 votes
2 answers
3k views

Circuit construction for Hamiltonian simulation

14 votes
4 answers
3k views

What is a list of research journals publishing quantum computing articles?

12 votes
2 answers
4k views

What's the Difference between T2 and T2*?

  • 1,240
9 votes
3 answers
169 views

Is there quantum advantage to be had with a D-Wave computer in 2020?

  • 591
9 votes
2 answers
354 views

Decomposing Hamiltonian into qubit model representation

  • 12.5k
9 votes
2 answers
1k views

What does it mean to "measure an operator"?

  • 905
8 votes
2 answers
2k views

Qiskit - Z expectation value from counts?

7 votes
1 answer
88 views

Enforcing a particular layout mapping in Qiskit

  • 71
7 votes
1 answer
1k views

How to perform quantum state tomography on two qubits?

5 votes
2 answers
485 views

Quantum circuit for a three-qubit bit-flip code

  • 535
5 votes
2 answers
179 views

Why does quantum error correction work?

  • 1,263
5 votes
1 answer
1k views

What does the error rate on the IBMQ website mean?

  • 179
5 votes
3 answers
295 views

How to create the logical $|0_L\rangle$ state for the Steane's 7-qubit code?

  • 75
5 votes
3 answers
1k views

What is a "maximally mixed state"?

  • 255
5 votes
2 answers
138 views

Are there established best practices for designing Dwave embeddings?

4 votes
2 answers
228 views

Why does one need a non-commuting Hamiltonian for an algorithm to exhibit "quantumness"

4 votes
1 answer
281 views

Can QAOA be considered as simulation of a quantum annealer on a gate-based quantum computer?

3 votes
1 answer
287 views

How to formulate Dynamical Decoupling passes in Qiskit to improve result upon circuit execution

  • 12.5k
3 votes
1 answer
216 views

What is the standard noise channel that is applied in simulations?

2 votes
3 answers
212 views

Compiling the Pauli-Z operator to the Rz operator for Hamiltonian simulation

  • 3,908
1 vote
0 answers
297 views

Expectation value of a quantum circuit [closed]

  • 1,263
1 vote
1 answer
196 views

How to measure expectation values of $Z$ and $X$ on the given states? [closed]

1 vote
1 answer
79 views

What's the relation between the sign of error correction code and commute of operators?

  • 1,263