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Marco Fellous-Asiani's user avatar
Marco Fellous-Asiani's user avatar
Marco Fellous-Asiani's user avatar
Marco Fellous-Asiani
  • Member for 5 years, 7 months
  • Last seen this week
34 votes
1 answer
11k views

What exactly is an oracle?

21 votes
3 answers
4k views

Intuition about Knill-Laflamme QEC conditions

13 votes
2 answers
973 views

Where do we put error correction code in quantum circuit?

12 votes
3 answers
2k views

Quantum advantage with only Clifford gates (Gottesman Knill theorem)

11 votes
2 answers
602 views

Review paper on depth, qubits and $T$ gates number on Clifford+T decomposition for various "typical" algorithms

11 votes
1 answer
195 views

Group theory lecture for quantum information

10 votes
2 answers
386 views

A rigorous definition for an exponential quantum advantage

10 votes
1 answer
2k views

Global phase and single qubit gate: does it actually matter for two (or more) qubit gates?

9 votes
3 answers
532 views

Magic state distillation: why is it harder to prepare the encoded $|A_{\pi/4}\rangle$ than $|0 \rangle$

9 votes
1 answer
3k views

Transversal logical gate for Stabilizer (or at least Steane code)

8 votes
3 answers
4k views

Square root of Pauli operators: is there a common convention to define them uniquely?

8 votes
1 answer
359 views

Good references to learn magic state distillation for fault tolerance

8 votes
2 answers
322 views

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

8 votes
2 answers
614 views

Why attenuator and not filters for QC driving line

7 votes
1 answer
307 views

What limits speed of quantum gates?

7 votes
1 answer
413 views

Adding a phase to qubit: why is it necessary for arbitrary single qubit gate

7 votes
2 answers
1k views

How is the Deutsch-Jozsa algorithm faster than classical for practical implementation?

7 votes
1 answer
187 views

Given $n-k$ stabiliser generators, how can we find an additional $k$ commuting generators?

7 votes
0 answers
571 views

What are the "nice" properties of the diamond norm and why is it used?

7 votes
1 answer
653 views

Definition of magic $T$ and $H$ states: are there different definitions for them?

7 votes
1 answer
605 views

How to check if a $n$-qubit unitary is the tensor product of single-qubit unitaries

7 votes
1 answer
395 views

Why do we need to keep of history of $d$ cycle for surface code in order to resist against data *and* measurement errors

7 votes
2 answers
1k views

How to find the stabilizer generators for a post-measurement state?

6 votes
2 answers
227 views

Proven quantum advantage (in the algorithmic sense) without error correction (for specific algo, or noise models)

6 votes
1 answer
416 views

State of the art decoding algorithms for surface code

6 votes
1 answer
454 views

Is there a non-Clifford gate preserving both $X$ and $Z$ errors?

6 votes
1 answer
237 views

Getting intuition on the state-injection relations for the generalized $\exp(-iP \pi/8)$ $T$-gates (ideally using ZX calculus)

6 votes
3 answers
1k views

Why are POVMs useful? Are they just an axiomatic way to define measurement?

5 votes
3 answers
737 views

Why do purifications only differ by a local unitary?

5 votes
2 answers
2k views

Maximally entangled state definition, and orthonormal basis of maximally entangled state

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