User cnada

12 votes

How do you implement the Toffoli gate using only single-qubit and CNOT gates?

answered Aug 6, 2018 at 15:14

8 votes

Accepted

What exactly is "matrix sparsity" $s$?

answered Aug 11, 2018 at 12:09

8 votes

Accepted

Submitting jobs to IBMQ backend via HTTP API Requests

answered Jan 11, 2019 at 5:27

7 votes

Accepted

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

answered Nov 5, 2018 at 13:33

7 votes

How would D-Wave be used for complex optimization problems?

answered Aug 1, 2018 at 13:07

6 votes

How can I calculate the inner product of two quantum registers of different sizes?

answered Aug 9, 2018 at 21:49

6 votes

Accepted

How to describe, or encode, the input vector x of Quantum Fourier Transform?

answered Nov 20, 2018 at 9:55

6 votes

Can the SWAP test only compare registers with the same number of qubits?

answered Feb 8, 2019 at 14:09

6 votes

Accepted

QAOA for MaxCut - Algorithm motivation

answered Feb 18, 2020 at 22:41

5 votes

Accepted

Implementation of Grover's Algorithm (minimum spanning tree)

answered Jun 7, 2019 at 7:58

5 votes

Accepted

How do I build a gate from a matrix on Qiskit?

answered Dec 19, 2018 at 12:43

5 votes

Is there any (really) quantum procedure that's an algorithm and not a Las Vegas algorithm?

answered Dec 19, 2018 at 21:02

5 votes

Accepted

What's the matrix representation of this 3-qubit CZ circuit?

answered Nov 10, 2018 at 20:59

5 votes

Why are oracles Hermitian by construction?

answered Oct 24, 2018 at 21:23

5 votes

Practical example of Grover's algorithm (in Q#)

answered Nov 1, 2018 at 10:04

5 votes

Accepted

Clarification needed: "Simulation" of $e^{-iHt}$ and its time complexity

answered Nov 4, 2018 at 11:18

5 votes

State of the art gate speeds and decoherence times

answered Aug 28, 2018 at 4:01

5 votes

Which programming language is suitable for a beginner?

answered Sep 10, 2018 at 15:53

5 votes

Accepted

Is there a general method to implement a 'greater than' quantum circuit?

answered Oct 5, 2018 at 13:12

4 votes

What's an example of building a circuit $U_f$ that implements a simple function $f$?

answered Oct 18, 2018 at 21:15

4 votes

Accepted

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

answered Sep 6, 2018 at 17:29

4 votes

How to add two integers in Q#?

answered Sep 15, 2018 at 13:48

4 votes

How to re-create the following circuit image?

answered Aug 21, 2018 at 16:30

4 votes

Is quantum computing mature enough for a computer scientist with no physics background?

answered Aug 7, 2018 at 22:18

4 votes

Can quantum computing be profitable without quantum hardware?

answered Oct 28, 2018 at 1:44

4 votes

Accepted

How does the CNOT gate operate when the control qubit is a superposition?

answered Dec 9, 2018 at 18:07

4 votes

How to implement Grover's diffusion operator when starting with a W state?

answered Dec 15, 2018 at 2:16

4 votes

Current limits on Grover search space

answered Feb 9, 2019 at 12:48

4 votes

How to study quantum machine learning?

answered Feb 22, 2019 at 22:46

4 votes

How is the Grover-Algorithm applied to a database?

answered Mar 14, 2019 at 7:43

Stack Exchange Network

97 Answers

How do you implement the Toffoli gate using only single-qubit and CNOT gates?

What exactly is "matrix sparsity" $s$?

Submitting jobs to IBMQ backend via HTTP API Requests

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

How would D-Wave be used for complex optimization problems?

How can I calculate the inner product of two quantum registers of different sizes?

How to describe, or encode, the input vector x of Quantum Fourier Transform?

Can the SWAP test only compare registers with the same number of qubits?

QAOA for MaxCut - Algorithm motivation

Implementation of Grover's Algorithm (minimum spanning tree)

How do I build a gate from a matrix on Qiskit?

Is there any (really) quantum procedure that's an algorithm and not a Las Vegas algorithm?

What's the matrix representation of this 3-qubit CZ circuit?

Why are oracles Hermitian by construction?

Practical example of Grover's algorithm (in Q#)

Clarification needed: "Simulation" of $e^{-iHt}$ and its time complexity

State of the art gate speeds and decoherence times

Which programming language is suitable for a beginner?

Is there a general method to implement a 'greater than' quantum circuit?

What's an example of building a circuit $U_f$ that implements a simple function $f$?

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

How to add two integers in Q#?

How to re-create the following circuit image?

Is quantum computing mature enough for a computer scientist with no physics background?

Can quantum computing be profitable without quantum hardware?

How does the CNOT gate operate when the control qubit is a superposition?

How to implement Grover's diffusion operator when starting with a W state?

Current limits on Grover search space

How to study quantum machine learning?

How is the Grover-Algorithm applied to a database?