Questions tagged [encoding]
For questions that are about representing a physical quantity as a quantum state. For instance, questions about amplitude encoding, state encoding or fermion to qubit encoding should use this tag.
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Why a basis in super dense quantum coding?
In the classical super dense quantum coding scheme of Bennet and Wiesner (1992), the authors start from an element in the Bell base (which consists of $4 = 2^2 = 2 \times 2$ states, in dimension $4$), ...
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Do encoding schemes for variational algorithms apply to annealing methods (e.g. DWave)?
I understand there are some efficient encoding schemes for variational algorithms, that attempt to approximate the variational state using fewer qubits. I'm thinking of 2 papers in particular, which ...
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How to introduce non-linearity into a quantum circuit?
What are the known ways to encode or introduce non-linear functions/operators into a quantum circuit?
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Quantum data as input for Quantum Neural Net
I'm new to quantum machine learning, and I wanted to know how quantum data is processed in a quantum neural net.
For example, if I am training a QNN to classify entangled circuits from non-entangled ...
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How can I decode a ZZFeatureMap?
I've encoded a basic 2x2 image into a quantum circuit using a ZZFeatureMap in Qiskit. Is there any way I can verify that this encoding was correctly done?
My first thought was to try to decode this ...
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Preparation of logical state with qLDPC code
I'm recently learning qLDPC code. Although I've seen literature talking about the code construction, parity check, possible logical operation and decoding. How exactly do I prepare e.g. a logical phi ...
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A matrix that can be simultaneously diagonalisable can induce a decomposition of its space
Potentially "space" is not the correct word to use in the title, please correct if wrong
I am reading "Quantum Error Correction Via codes over Gf(4)" and I came across something I ...
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Does the fact that the elements of the normalizer group commute with elements of the stabilizer group imply that the normalizer is abelian?
The following question is from a paper I am reading called "Quantum Error Correction Via Codes Over GF(4)"
It says:
Let $E$ be the quantum error group.
Let $S' \leqslant E$ which specifies ...
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Visualize the qubit state after amplitude encoding
I trying to visualize qubits state after amplitude encoding.
I have the following code which takes the 8 feature [1/2, 1/2, 1/2, 1/2,1/2, 1/2,1/2,1/2] and encodes into 3 qubits.
I now get the output [...
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Is efficient state preparation possible for binary states?
Binary Vector Definition:
A vector where each entry has one of 2 possible values: $\{0, \dfrac{1}{\sqrt{K}}\}$.
Where $K$ is the number of non zero entries.
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Is there anything special about ...
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How to best represent 5-Qbit codeword operator in Qiskit [duplicate]
We learned that in the 5-Qibit error correcting code, the logical zero state $ | \bar{0} \rangle $ is encoded in the form of $ \frac{1}{4} (\mathbb{1}+M_0)(\mathbb{1}+M_1)(\mathbb{1}+M_2)(\mathbb{1}+...
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Derivation of complexity for data encoding schemes
Could anyone help to derive the space-time complexities of the following different data encoding schemes ?
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Encoding classical data to quantum space
I went through the link " https://learn.qiskit.org/course/ch-applications/hybrid-quantum-classical-neural-networks-with-pytorch-and-qiskit" where a hybrid of classical and quantum ...
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How does one perform amplitude encoding using only unitary gates?
How does one perform amplitude encoding using only unitary gates ?
Could you show me a concrete example ?
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Grover's algorithm to maximize QUBO functions
I'm trying to maximize a QUBO function f(x,y,z) = 3xy + 4xz - 3yz + 11y + z. How can I use Grover's algorithm to do this?
I've been told to encode this cost ...
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