Quantum Computing

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First edit.
Awarded 1443 times.
Help with objective function definition for CQM problem
Awarded yesterday
What role does Landauer's principle play in quantum reverisbility?
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Expectation value of Pauli string for VQE
Awarded yesterday
Expectation value of Pauli string for VQE
Awarded 2 days ago
Why can the CNOT representation $e^{i\frac{\pi}{4}\left(I-Z\right)\otimes\left(I-X\right)}$ hardly be found in books?
Awarded May 18 at 10:09
Computing characteristic polynomial of unitary operation
Awarded May 17 at 16:30
Computational Complexity of random Transverse-Ising Chain
Awarded May 16 at 10:55
Is there a relation between quantum entanglement and inclusion-exclusion principle?
Awarded May 16 at 7:34
How are IBM's 127 qubits more potent than the 5760 qubits D-Wave - Advantage_system6.1?
Awarded May 15 at 13:32
Lattice surgery on small Surface Code (d=2, 7 qubits)
Awarded May 14 at 17:03
Question on State Transfers [closed]
Awarded May 14 at 1:16
Can you construct a 3-qubit XOR state?
Awarded May 13 at 15:30
Is (square root) fidelity strictly concave?
Awarded May 13 at 5:19
ket zero $|0\rangle = [1,\, 0]$, why a qubit which is initialized with zero is 1 in first basis state?
Awarded May 10 at 23:33
What optimizations does the matrix need to run in HHL algorithm?
Awarded May 10 at 22:46
What is the adjoint of the complementary channel?
Awarded May 10 at 17:31
Is there a quantum algorithm to find the xor of a dataset
Awarded May 8 at 13:10
How to simulate $H(\theta) = B(\sin\theta S_1^x +\cos\theta S_1^z +\sin\theta S_2^x +\cos\theta S_2^z)+aS_2^zI_z$ on IBM Qiskit
Awarded May 7 at 0:46
What is the correct name of this quantum gate? Possibly state control gate
Awarded May 5 at 20:57
Counting the number of CCX and CX gates in controlled modular addition
Awarded May 5 at 13:05
Is 60% accuracy high when calculating 1+1 on a quantum computer?
Awarded May 5 at 11:43
What gate combinations create entangled two-qubit states?
Awarded May 4 at 21:26
Why does code switching not allow for universal fault-tolerant quantum computation?
Awarded May 4 at 11:11
Create a 2-qubit quantum circuit with given state probabilities
Awarded May 3 at 18:36
Is it possible to turn modular multiplication into in-place operation?
Awarded May 3 at 9:51
split_dataset_to_data_and_labels in qiskit not working correctly
Awarded May 2 at 12:48
How to define the phase obtained from the quantum phase estimation when using the randomized product formula as the Hamiltonian simulation?
Awarded Apr 29 at 17:27
No module named 'qiskit.optimization' on Google Colab
Awarded Apr 29 at 0:43
How many times does syndrome extraction need to be repeated?
Awarded Apr 28 at 21:35
Proven quantum advantage (in the algorithmic sense) without error correction (for specific algo, or noise models)
Awarded Apr 27 at 11:16
(Exercise-verification) Basic exercise on a 3 qubits circuit
Awarded Apr 27 at 8:10
AWS Braket Backend for Qiskit?
Awarded Apr 26 at 22:48
(post deleted or otherwise unavailable)
Awarded Apr 26 at 0:42
Why does the parameter circuit include both the positive and negative shift terms?
Awarded Apr 25 at 23:27
Can the Bernstein-Vazirani algorithm be applied to a remote classical function?
Awarded Apr 23 at 0:55
Question about mock backends!
Awarded Apr 22 at 19:01
Qiskit Controlled Reset of a qubit
Awarded Apr 20 at 21:25
Are qubits just analog, continuous classical bits?
Awarded Apr 20 at 15:22
(post deleted or otherwise unavailable)
Awarded Apr 20 at 12:42
How to obtain an expression of the complexity of the period-finding algorithm with respect to the period length?
Awarded Apr 19 at 23:05
How accurate must QM be for applications of quantum computing?
Awarded Apr 18 at 18:57
O(N log(M)) vs O(log(MN)) Complexity Name
Awarded Apr 17 at 23:31
Five qubits can be entangled in how many ways?
Awarded Apr 17 at 8:16
Why is the combination of NTRU Prime and X25519 ECDH in OpenSSH believed to be secure against quantum attacks?
Awarded Apr 16 at 14:05
How are Deutsch-Jozsa and Bernstein-Vazirani algorithms a fair comparison to classical ones
Awarded Apr 14 at 16:40
How to get the matrix of a quantum circuit when the ancilla qubit is set to a specific state?
Awarded Apr 14 at 2:35
Can a quantum computer break quantum cryptography?
Awarded Apr 13 at 21:31
Theta value passed as input to quantum phase estimation: qiskit textbook
Awarded Apr 12 at 18:09
Derivation of the linear cross entropy
Awarded Apr 11 at 13:17
State Initialization of quantum circuit
Awarded Apr 11 at 11:03
What is measure_all function and the vertical dotted line represent in the circuit?
Awarded Apr 11 at 8:55
What is the expectation value ${\Bbb E}[\langle\psi,O\psi\rangle]$ over the Haar distribution?
Awarded Apr 11 at 7:36
What is the difference between CV QKD and DV QKD?
Awarded Apr 8 at 5:41
(post deleted or otherwise unavailable)
Awarded Apr 5 at 14:17
How to mathematically determine the final state of a system after some Gaussian microwave pulse?
Awarded Apr 3 at 1:30
Qiskit: bind parameters to sub-circuit
Awarded Apr 1 at 11:03
What's meaning of the expression like "Qubit[] => Result"
Awarded Apr 1 at 4:07
Local Hermitian operators can be written as sums over local error operators?
Awarded Mar 29 at 12:57
Calculating the expectation value of an observable in Qiskit
Awarded Mar 27 at 18:41
Ekert's QKD protocol with Eve ( hacker ) sending random mixture of qubit pairs in the states |00>, |11>, |++>, |-->
Awarded Mar 27 at 10:06
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