Top new questions this week:
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I have just started reading the paper A Grand Unification of Quantum Algorithms. There is a claim on page 2 that "by simply adjusting the parameters of QSVT, one can construct nearly all known ...
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The question is more from the physical side of quantum computers. Can we say that operators are unitary or due to the NISQ nature, the operator (impact on particles) in reality deviates from this ...
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Suppose I am given a QUBO problem consisting in the minimization of a quadratic function $\vec{x}^T Q \vec{x}$ over a binary-valued vector $\vec{x} \in \{0, 1\}^n$, with $Q$ a symmetric indefinite ...
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I am trying to understand what exactly is passManager, what exactly it its use, where exactly we need to use it?
https://github.com/Qiskit/qiskit-tutorials/blob/...
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There are 3 Projections $P_1$, $P_2$, and $P_3$ corresponding to 3 inputs $x = 1, 2, 3$ for Alice. Similarly, the same projections are used by Bob for $y = 1, 2, 3$. Each input has 2 outcomes, $a = 1, ...
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Suppose we want to perform a gate from the third level of the Clifford hierarchy for example $ T,CS, CCZ, CCX $. To implement such a gate using gate teleportation we need to take as an input certain ...
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I am currently working my way through "Introduction to Classical and Quantum Computing" by Thomas Wong. I am trying to solve the following problem:
Exercise 7.23. Answer the following ...
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Greatest hits from previous weeks:
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While writing this answer I realized it would be really helpful if I could show the OP a video or .gif of how qubit states in Bloch spheres transform under certain unitary operations. I googled up a ...
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I am trying to run the Quantum Teleportation Algorithm using Qiskit on Jupyter Notebook.
Here is my code below where I am finding an error -
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In Quantum adder of two states that are themselves superpositions, I asked:
I have two states $|a\rangle = \frac{1}{\sqrt N}\sum_{i=0}^{N-1}|i\rangle|a_i\rangle$ and $|b\rangle = \frac{1}{\sqrt N}\...
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I want to create a Toffoli gate controlled by n qubits, and implement it in QISKit. Can this be done? If so, how?
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From this link:
Where equation 1 is:
I can probably brute-force this by explicitly calculating this quantum circuit's effective 4x4 matrix and seeing that its equivalent to this teleportation ...
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Below is a figure from a TIME magazine edition. I have a few questions regarding this representation of quantum computing:
Is saying "0 and 1 at the same time" a correct statement? Isn't ...
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Quantum state teleportation is the quantum information protocol where a qubit is transferred between two parties using an initial shared entangled state, Bell measurement, classical communication and ...
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Can you answer these questions?
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While reading the QMA-QCMA paper by Aaronson and Kuperberg I wondered how their result extends to quantum circuits.
Suppose you have an oracle $O$ such that $O\left|\psi\right>=-\left|\psi\right>...
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I have a circuit with $2N + 1$ qubits and with depth $2t + 2$, where $t$ is essentially the number of trotter steps, or the number of times a fixed block of gates repeats itself in the circuit. After ...
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Recently, I've been looking into quantum error correction codes as tensor networks. I collected the following "facts" (which may be wrong, if so, please feel free to correct me on them).
A $[...
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