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Mithrandir24601's user avatar
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Mithrandir24601
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  • Member for 6 years, 3 months
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34 votes
Accepted

How does a quantum computer do basic math at the hardware level?

32 votes
Accepted

How do I add 1+1 using a quantum computer?

24 votes

Twirling Quantum Channels: Pauli and Clifford Twirling

19 votes
Accepted

Why can't quantum annealing be described by a gate model?

14 votes
Accepted

What level of "confidence" of the result from a quantum computer is possible?

14 votes
Accepted

What exactly is meant by "noise" in the following context?

10 votes
Accepted

State produced by spontaneous parametric down-conversion (SPDC)

10 votes
Accepted

How does approximating gates via universal gates scale with the length of the computation?

10 votes
Accepted

What components are needed to realize a photonic CNOT gate?

9 votes
Accepted

How are gates implemented in a continuous-variable quantum computer?

8 votes

How should different quantum computing devices be compared?

8 votes
Accepted

How does Fourier sampling actually work (and solve the parity problem)?

7 votes
Accepted

Can quantum computers design quantum computers autonomously better than other methods?

7 votes

What does quantum error correction code notation stand for?

7 votes

How does the Grover diffusion operator work and why is it optimal?

6 votes
Accepted

Are qutrits more robust to decoherence?

6 votes
Accepted

Why or how is 'cat' state preparation via a C-not-not operation not fault tolerant?

6 votes
Accepted

Accessible information of system vs system, apparatus and environment

6 votes

'Rectilinear' and 'Diagonal' Basis in BB84 Protocol

5 votes
Accepted

What do we mean by parity of qubits?

5 votes
Accepted

A two qubit state in a special form

5 votes
Accepted

Is it possible to speed up the generation of the weighting matrix using a quantum algorithm?

5 votes

Why do error correction protocols only work when the error rates are already significantly low to begin with?

5 votes
Accepted

PennyLane operations - Kerr, Displacement and Squeeze

4 votes

Can the theory of quantum computation assist in the miniaturization of transistors?

4 votes

Why is the decomposition of a qubit-qutrit Hamiltonian in terms of Pauli and Gell-Mann matrices not unique?

4 votes
Accepted

Matrix representation of continuous-variable gates

4 votes
Accepted

Deduce the Kraus operators of the dephasing channel using the Choi

4 votes
Accepted

Eigenvalues of CPT operator

3 votes

Can we use quantum parallelism to calculate many functions at once?