Quantum Computing
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JSdJ's user avatar
JSdJ's user avatar
JSdJ
  • Member for 4 years, 4 months
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  • Berlin, Germany
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99 Answers

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32 votes

Which subatomic particle does each company use in quantum computing?

29 votes
Accepted

What are magic states?

12 votes
Accepted

How to perform quantum state tomography on two qubits?

12 votes

Can quantum computer solve NP-complete problems?

11 votes

What is a flying qubit?

11 votes
Accepted

What is the relationship between Choi and Chi matrix in Qiskit?

10 votes
Accepted

How to perform Quantum Process Tomography for three qubit gates?

10 votes
Accepted

How to show that amount of qubits needed to crack the RSA-2048 protocol using Shor's algorithm?

10 votes
Accepted

Characteristics of the IBM quantum computer

9 votes

How to build a quantum computer in your house?

8 votes
Accepted

Why is the complexity of $n$-qubit state tomography not upper bounded as $O(3^n)$?

8 votes
Accepted

Does a photonic quantum computer control a single photon?

7 votes
Accepted

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

6 votes

Is it right to think of superposition as just angle?

6 votes

How to define a quantum channel for the partial trace?

6 votes
Accepted

What's the observable when measuring multiple qubits in the computational basis?

5 votes

Is spontaneous excitation possible?

5 votes

Is the tensor product of two states commutative?

5 votes
Accepted

How to get the stabilizer group for a given state?

5 votes
Accepted

Quantum circuit for a three-qubit bit-flip code

5 votes

How to run an approximate simulation, and why

5 votes
Accepted

What are examples of quantum computing platforms availble for free (other than IBM Q)?

5 votes

Why does quantum error correction work?

5 votes
Accepted

How to construct a CU3 gate using only CX and U3 gates?

5 votes

Is Quantum Computing a problem for Cryptography?

5 votes
Accepted

Good references to learn magic state distillation for fault tolerance

5 votes

On Cluster States: Measuring in $|+\rangle$ and $|-\rangle$ basis vs. some other computational basis

5 votes
Accepted

5 qubit codewords definition in terms of operators: Mermin

5 votes
Accepted

Logical bit-flip and Phase-flip operators of Shor’s 9-qubit code

5 votes
Accepted

Do global phases matter when a gate is converted into a controlled gate?

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