Quantum Computing

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First edit.
Awarded 1827 times.
How does uncomputation vs a reset effect the measurement
Awarded 12 hours ago
How to add Source and sink qubit in dag Circuit
Awarded 2 days ago
What is a Bacon-Shor code and what is its significance?
Awarded Mar 27 at 2:49
Quantum error correction [closed]
Awarded Mar 26 at 19:41
(post deleted or otherwise unavailable)
Awarded Mar 25 at 23:51
How can I produce the state $\frac{1}{\sqrt{2}^N} (|1,0^{N-1}\rangle + |01,0^{N-2}\rangle + ...+|0^{N-1},1\rangle)$
Awarded Mar 25 at 6:47
Using QuTip to define tensor product of more than two operators
Awarded Mar 25 at 1:32
How to represent two gates addition on Qiskit composer. we can do tensor product and multiplication but how to do Addition
Awarded Mar 24 at 14:19
How can I implement an n-bit Toffoli gate?
Awarded Mar 24 at 11:20
Clarification needed regarding quantum "black-box" circuits
Awarded Mar 24 at 5:50
What's $(\langle 0|\otimes I)(|00\rangle + |11\rangle)$ simplified?
Awarded Mar 22 at 12:40
Why for every state there is always a measurement that has a deterministic outcome?
Awarded Mar 20 at 16:05
(post deleted or otherwise unavailable)
Awarded Mar 19 at 10:30
expectation value of a noisy system
Awarded Mar 18 at 16:58
Are Quantum Algorithms that construct another Quantum Algorithm still valid to solve problems in BQP?
Awarded Mar 17 at 15:18
(post deleted or otherwise unavailable)
Awarded Mar 16 at 1:11
Adding phases of two qubits
Awarded Mar 15 at 17:21
Is there another parameterization of a qutrit 3-level system, besides Gell-Mann?
Awarded Mar 15 at 13:28
Is there another parameterization of a qutrit 3-level system, besides Gell-Mann?
Awarded Mar 15 at 12:57
(post deleted or otherwise unavailable)
Awarded Mar 15 at 1:17
Quantum simulation for solving complicated hamiltonians exactly
Awarded Mar 14 at 22:26
Distributive property of Ket over addition
Awarded Mar 14 at 7:06
Measuring T1 and T2 constants on IBM Q
Awarded Mar 14 at 7:01
Grover's algorithm is optimal under alternative oracle definition? [duplicate]
Awarded Mar 13 at 20:36
Prove that the conditional min-entropy is $H_{\rm min}(A|B)=\max_\sigma\sup\{\lambda:\,\rho\le 2^{-\lambda}(I\otimes\sigma)\}$
Awarded Mar 12 at 16:10
Status of Google's quantum supremacy claim 2022
Awarded Mar 11 at 20:11
What physical quantity does a density operator represent as an observable?
Awarded Mar 11 at 15:25
Zero noise extrapolation for error mitigation: Meaning of rescaled density matrix, specifically when there is no local hamiltonian evolution
Awarded Mar 10 at 14:19
What are the available quantum algorithms to solve an IVP of a given ODE?
Awarded Mar 7 at 9:48
How to correct error during the syndrome measurement or recovery process?
Awarded Mar 7 at 0:48
Controlled Z gate entanglement
Awarded Mar 5 at 2:36
Entanglement and superposition illustration
Awarded Mar 4 at 0:20
Quantum gate count minimization
Awarded Mar 3 at 18:25
Two-time correlators in Cirq?
Awarded Mar 3 at 9:40
Building universal gate set for $SU(d^n)$ from universal gate set for $SU(d)$
Awarded Mar 2 at 18:49
How to calculate the evolution of ket states through a simple quantum circuit?
Awarded Mar 2 at 9:02
How to modify the Deutsch-Jozsa algorithm to distinguish between two types of $n$-bit inputs
Awarded Mar 1 at 3:06
What are the possible $\beta$ in a qubit state $\frac{e^{i\pi/8}}{\sqrt5}|0\rangle+\beta|1\rangle$?
Awarded Feb 28 at 21:34
How are quantum circuits constructed on cloud-based quantum computers?
Awarded Feb 27 at 20:35
IBMQ job was not run immediately after it was sent during my reservation [closed]
Awarded Feb 26 at 16:37
Degenerated vs non degenerated code: for both there always exist Kraus bringing to different orthogonal subspaces?
Awarded Feb 26 at 11:27
Mandatory conditions to fulfil Entanglement state?
Awarded Feb 25 at 15:43
Has the optimality of Grover's algorithm be proven in the standard oracle case?
Awarded Feb 25 at 14:20
Knill-Laflamme condition and requirements for error correction
Awarded Feb 25 at 6:38
(post deleted or otherwise unavailable)
Awarded Feb 24 at 20:36
Modular Addition general explanation
Awarded Feb 24 at 18:55
Qiskit: density matrix after measurement
Awarded Feb 24 at 9:56
Express $e^{i\frac{\gamma}{2}Z\otimes Z}$ in terms of CNOT and rotations gate
Awarded Feb 23 at 13:26
What is the meaning of $\langle e_k|U|e_0\rangle$ when $U$ acts on a larger Hilbert space than that in which $|e_0\rangle$ and $|e_k\rangle$ live?
Awarded Feb 22 at 10:56
The error with Estimator primitive due to the qiskit version
Awarded Feb 21 at 2:50
Clifford gates constructed from CNOT, H and S gates
Awarded Feb 20 at 20:20
How does one begin to map a circuit to this problem? (Reversible 2-bit demultiplexer using NOT, CNOT, Toffoli & Fredkin)
Awarded Feb 20 at 17:50
Quantum counting with ancillary qubits
Awarded Feb 20 at 13:18
(post deleted or otherwise unavailable)
Awarded Feb 19 at 3:18
Circuit containing only Hadamard gate returns bad results
Awarded Feb 17 at 13:05
Find the desire state with a set of gates?
Awarded Feb 17 at 12:26
Why is the operation in Nielsen and Chuang's Section 8.5 not a quantum operation?
Awarded Feb 17 at 5:18
What is the difference between quantum gates and quantum channels?
Awarded Feb 16 at 1:32
Not able to run on Riggeti from Azure
Awarded Feb 14 at 23:04
Will deep learning neural networks run on quantum computers?
Awarded Feb 14 at 14:19
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