22 Is error correction necessary? 2018-03-14T01:32:52.570

20 Which quantum error correction code has the highest threshold (as proven at the time of writing this)? 2018-03-13T13:24:24.397

15 What exactly is meant by "noise" in the following context? 2018-03-13T10:05:43.737

13 How does approximating gates via universal gates scale with the length of the computation? 2018-03-19T23:00:47.297

9 How do quantum computers prevent "quantum noise"? 2018-03-28T20:12:03.880

8 Depolarizing channel implementation on IBM Q 2018-10-07T00:18:00.340

7 How to make qubits more stable towards noise? 2018-03-13T06:40:05.623

7 Does Barkhausen noise affect the measurement of magnetic particle based qubits? 2018-03-26T02:22:40.907

7 Is it true that observing a quantum state will end the superposition of states? How can I not observe? 2018-04-21T20:29:23.433

7 How are Rigetti and IBM QX device parameters related to Kraus operators? 2018-11-05T21:52:22.943

7 Derive phase damping quantum operation 2019-07-27T14:21:40.190

6 Threshold and practical requirements for initial state preparation? 2018-05-01T06:51:41.983

5 Quantum teleportation with "noisy" entangled state 2019-04-17T15:16:29.680

5 What are the physical reasons behind noise/errors in quantum computers? 2019-09-06T01:11:03.800

5 Explicit form for composition of Choi representation quantum channels 2020-03-08T21:30:50.937

5 How to not optimize the quantum gates in a qiskit circuit when running it in the real device? 2020-06-06T11:54:21.373

4 Do avoided crossings / CTs /ZEFOZs optimize quantum fidelity in practice? 2018-05-12T17:34:38.400

4 How can noise on a device be simulated using measured noise parameters? 2019-01-07T13:17:03.400

4 Implementing a depolarizing channel for 2 qubits on IBM Q 2019-04-29T08:49:20.973

4 Degradable channels and their quantum capacity 2019-05-09T15:39:08.343

4 How to add noise to existing gates in Cirq? 2019-11-03T12:59:14.253

4 How good is basic_device_noise_model() simulating the noise in the quantum computer? 2019-11-26T19:32:34.523

4 How's quantum noise and fault-tolerance related to symplectic geometry and geometric quantization? 2019-12-04T13:52:05.150

4 What types of noise are there? 2019-12-25T02:54:59.107

4 What kind of errors does the master equation in the Lindblad form describe, continuous errors or discrete errors? 2020-01-10T07:33:03.800

4 Why attenuator and not filters for QC driving line 2020-07-15T22:50:38.083

4 How can I fit an unknown quantum channel? 2021-01-18T16:59:45.550

4 Is un-computing $U$ a good proxy for circuit fidelity? 2021-01-23T00:35:08.757

3 Does self-induced collapse limit the size of a quantum computer? 2019-01-11T12:16:26.200

3 What do you specify when you physically apply a unitary? 2019-01-13T12:50:38.063

3 What are reasonable noise/dephasing parameters for QuEST to emulate state-of-the-art quantum computers? 2019-03-07T09:50:49.083

3 How to selectively apply noise in Qiskit simulations? 2019-10-23T14:31:51.010

3 Why are two qubits gates more noisy? 2020-03-08T15:18:31.530

3 Exponential Growth of Noise in Quantum Computers 2020-05-23T17:03:12.920

3 In the three-qubit bit flip code, why can the first bit flip without impacting the entanglement with the other qubits? 2020-07-31T19:08:47.080

3 Is spontaneous excitation possible? 2020-08-10T15:35:59.537

3 Is there any way we get the state vector/density matrix of a noisy simulation in qiskit? 2020-08-26T11:57:57.570

3 noisy circuit by openfermion 2021-01-30T15:15:26.267

2 What noise channel that is not coming from the control can lead to XY qubit rotations? 2019-03-08T21:26:01.143

2 Application of improved compatibility 2019-03-19T16:37:49.370

2 Implementing noise model in Quantum simulator 2019-08-01T13:21:49.827

2 Implementing noise model in Qiskit using arbitrary basis gates 2019-10-16T13:39:27.440

2 How is quantum error applied to the qubits? 2020-01-25T09:22:23.550

2 Rigorous definition of phenomenological master equation for decoherence 2020-01-28T16:00:26.230

2 Dealing with noise in NISQ 2020-02-06T23:28:37.943

2 Mitigating the noise in a quantum circuit 2020-03-10T16:25:18.327

2 Different QFT results when using Simulator or Quantum Machine 2020-03-13T21:29:18.953

2 Readout error in IBM quantum experience processor 2020-04-27T10:27:54.110

2 What happens when you send a Bell state through depolarizing channel? 2020-06-04T17:40:03.033

2 Prove that the depolarizing channel is completely positive 2020-06-20T03:38:16.973

2 Splitting a quantum task between multiple devices 2020-09-13T19:55:39.840

2 How to intentionally add noise to a Qiskit circuit? 2020-10-28T21:12:31.643

2 Why and how is quantum noise predictable? 2020-11-07T22:58:08.967

2 Depolarization of density operator with zeros in diagonal 2020-11-08T17:01:46.223

2 Is Noise model for quantum prototypes accurate in Qiskit 2020-12-07T06:07:56.357

2 What are the possible gates that I can use to vary input states before CNOT? 2020-12-20T12:22:48.820

1 How does qiskit finally implement a noise model? 2020-01-29T07:32:45.093

1 How do I know in which state the qubit is in each step of the circuit for the simulator in qiskit? 2020-02-26T17:51:52.290

1 IBM Q calibration parameters 2020-03-04T14:00:28.677

1 What is the precise definition of the environment a qubit lives in? 2020-03-29T21:48:20.657

1 I want to create a depolarizing channel on IBM qiskit 2020-06-24T21:42:31.187

1 Why should we use density matrices to simulate quantum systems with noise? 2020-07-19T04:03:29.133

1 Frequency collision and crosstalk error 2020-07-19T20:20:31.107

1 A question about quantum noise model 2020-07-22T09:36:32.790

1 How does noise affect the implementation of quantum gates? 2020-08-06T18:40:13.070

1 Do we expect similar results in form of measurement histogram for both (1 run with 100 shots) and (100 runs with 1 shot each)? 2020-09-03T02:36:37.200

1 What causes the random variations in the probabilities with respect to the theoretical values, in IBM and QASM simulators? 2020-09-12T02:58:29.043

1 Noise model for 3 Qubit $|GHZ \rangle$ state measurement circuit 2020-10-01T15:03:05.377

1 Why is the VQE insensitive to noise? 2020-10-13T19:27:01.830

1 Simulating noise of googles quantum computers 2020-10-19T07:13:21.157

1 Bit Flip, Seperable state and Several Question about Cirq 2020-10-21T23:24:10.483

1 Bernstein-Vazirani Gate IBM Q Noise 2020-10-28T23:19:54.723

0 How can I implement a kraus_error in qiskit? 2019-11-27T14:17:27.253

0 How can I obtain the lineally independent Kraus operators for the composition of two quantum channels? 2020-03-27T11:33:06.950

0 Error parameters from Qiskit backends 2020-04-06T16:00:50.063

0 Computation and measurement of readout error in IBM quantum experience 2020-04-28T17:13:52.773

0 QAOA with Qiskit: Is the initial state affected by the noise model? 2020-05-14T11:40:41.767

0 There seems to be a bias against states with more 1s, in IBM's calibration matrix generator: What are the consequences and possible solutions? 2020-08-17T02:48:48.487

0 Qiskit function phase_amplitude_damping_error 2020-09-02T11:47:52.017

0 Which type of quantum computer is explained by spin-boson Hamiltonian? 2020-09-11T01:13:45.600

0 How can I implement a circuit that simulates white noise on $n$ qubits? 2020-09-23T15:57:01.270

0 What do the "gate errors rates" mean physically for IBM's quantum computers? 2020-10-06T08:54:54.187

0 Simulation of Noise in a particular quantum computer 2020-10-17T10:02:00.357

0 Qiskit: simulate a circuit using a backend noise model 2020-12-23T08:41:48.727

-3 Building a DIY quantum computer - how to reduce a noise? 2020-01-12T14:24:15.480