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jecado
  • Member for 1 year, 8 months
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9 votes
Accepted

What does the paper "Training Variational Quantum Algorithms Is NP-Hard (Phys. Rev. Lett. 127, 120502)" mean?

9 votes
Accepted

Roughly speaking, How many qubits will be needed to study (or simulate) a molecule such as: C29H31N7O?

5 votes

Is where measurement is done the requirement for what gets to be called the computational basis?

5 votes
Accepted

Do VQE and QAOA use the same Hamiltonian?

4 votes
Accepted

Terminology - "Multi-controlled gate": "multiply" or "multiple"

4 votes

What is a term for a basis state along with its corresponding complex amplitude?

4 votes

How to apply the Hadamard gate to a given qubit state?

4 votes
Accepted

simulating quantum system on quantum simulator vs classical computer

3 votes
Accepted

Suppress Warnings

3 votes
Accepted

Does the formula $\sum_k f_k{\rm Tr}(O_k U\rho_k U^\dagger)$ have any physical meaning, in the context of variational quantum algorithms?

3 votes
Accepted

Generally, could VQE be used to prepare the highest energy state?

2 votes

What is the role of entanglement in quantum-computational speed-up?

2 votes

How is Quantum Phase Estimation useful for simulating dynamics of a many-body system?

2 votes

Best way to measure similarity of two quantum circuits?

2 votes
Accepted

Why does quantum phase estimation complexity scale with maximum representable energy?

2 votes
Accepted

Why von Neumann entropy requires diagonalization and linear entropy doesn't?

2 votes

Relationship between entanglement and complex vector space

1 vote
Accepted

How does quantum computer store data in QPU and how to calculate?

1 vote

How to calculate the coefficients of a qubit from the angles of its Bloch representation?

0 votes

Are there any examples of anyone applying quantum algorithms to problems in computational biology?

0 votes

unsymmetric observable estimation by Qiskit

0 votes
Accepted

Why does $a ⊕ (a ⊕ b) = b$ and $(a ⊕ b) ⊕ b = a$?

0 votes

Decomposing Hamiltonian into qubit model representation

0 votes

Theta value passed as input to quantum phase estimation: qiskit textbook