Quantum Computing
Tristan Nemoz's user avatar
Tristan Nemoz's user avatar
Tristan Nemoz's user avatar
Tristan Nemoz
  • Member for 3 years, 6 months
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128 Answers

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8 votes
Accepted

Is quantum computer without entanglement no better than anything classically achievable?

7 votes
Accepted

Transforming a Quantum State to a superposition of its inverse

7 votes
Accepted

quantum label classification using qiskit

6 votes
Accepted

What is the correlation between Toffoli and a more generic rotation shown in qiskit textbook

6 votes
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How to check a qubit's state?

6 votes
Accepted

Initial state preparation for Hadamard test

6 votes

Is it true that the way we must program Quantum Computers is through Total functions only, if so why?

6 votes

How can I represent the completely mixed state as $\frac I2=\frac14(\rho+X\rho X+Y\rho Y+Z\rho Z)$?

6 votes

Why do quantum computers have more qubits than classical computers have bits?

6 votes
Accepted

How to derive the state of a qubit after a partial measurement?

5 votes
Accepted

HHL Algorithm: How to compute the signs of the solution vector

5 votes
Accepted

Could "no cloning" be used as a defence for quantum encryption?

5 votes
Accepted

Is it possible to distinguish a pure state from a "partially uniform" state?

5 votes
Accepted

Phase estimation using $U_3$ gate

5 votes

Is there a quantum gate that can turn any superposition $|\varphi \rangle $ into a unit column vector $|00\cdots 1\cdots 0\rangle $

5 votes
Accepted

How is the state preparation Unitary in initialize selected?

4 votes
Accepted

Does Qiskit Statevector has actual speed up for Grover Search?

4 votes
Accepted

What happens if a Pauli $X$ gate is applied to part of a Bell state?

4 votes
Accepted

Universality and coverage of irrational multiples of $2\pi$ In $[0, 2\pi)$

4 votes

Controlled Z gate using Pauli rotation operators and Z tensor product Z

4 votes

Why does the output for $y$ have to be $y ⊕ f(x)$ in Quantum parallelism?

4 votes
Accepted

Hamiltonian of Qiskit QFT is not hermitian

4 votes
Accepted

Is there a name for a gate that 'moves' one qubit to a new position via multiple SWAP gates?

4 votes
Accepted

How does VQE work?

4 votes

Is Shor demonstration wrong?

3 votes
Accepted

Why uncomputing removes entanglement in general?

3 votes
Accepted

How to construct common classical gates with CNOT circuit?

3 votes
Accepted

How to calculate the log of a density matrix?

3 votes

Realizing Haar random unitary matrix on IBM Q

3 votes
Accepted

Conditional expectation for Haar random states

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