Quantum Computing
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Attila Kun
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5 answers
35 votes
4k views
38 bookmarks
Introductory material for quantum machine learning
5 answers
30 votes
5k views
19 bookmarks
How to derive the CNOT matrix for a 3-qubit system where the control & target qubits are not adjacent?
1 answer
20 votes
851 views
6 bookmarks
What are examples of Hamiltonian simulation problems that are BQP-complete?
2 answers
8 votes
639 views
6 bookmarks
What is the advantage of quantum machine learning over traditional machine learning?
1 answer
8 votes
332 views
3 bookmarks
Consequences of $MIP^\ast=RE$ Regarding Quantum Algorithms
1 answer
8 votes
467 views
3 bookmarks
What is recursive Fourier sampling and how does it prove separations between BQP and NP in the black-box model?
1 answer
8 votes
217 views
2 bookmarks
Nielsen and Chuang's proof for 'approximating arbitrary unitary gates is generically hard'
3 answers
7 votes
1k views
2 bookmarks
Hadamard gate as a product of $R_x$, $R_z$ and a phase
1 answer
7 votes
220 views
1 bookmarks
Does the GLOA have any advantage over the Solovay-Kitaev algorithm?
2 answers
6 votes
208 views
1 bookmarks
Can $|\Psi\rangle\simeq\sum_k |u_k\rangle|v_k\rangle$ be maximally entangled even if $\{|u_k\rangle\}_k,\{|v_k\rangle\}_k$ are not orthonormal?
1 answer
6 votes
163 views
1 bookmarks
Bob applies a projector - what happens to eigenvalues of Alice's reduced state?
1 answer
6 votes
476 views
3 bookmarks
Is there any 'official' list of errata for Nielsen & Chuang?
1 answer
5 votes
301 views
2 bookmarks
Showing that Matrix Inversion is BQP-complete - HHL Algorithm
1 answer
5 votes
451 views
1 bookmarks
What are examples of non-trivial POVM measurements?
1 answer
5 votes
247 views
3 bookmarks
Is Connes' Embedding Problem akin the word problem for finitely presented groups?
1 answer
5 votes
355 views
4 bookmarks
How can the Holevo bound be used to show that $n$ qubits cannot transmit more than $n$ classical bits?
4 answers
5 votes
170 views
2 bookmarks
Quantum teleportation and the reality of quantum states
1 answer
5 votes
304 views
2 bookmarks
Decomposition of any 2-level matrix into single qubit and CNOT gates
1 answer
4 votes
251 views
4 bookmarks
How to implement linear combination of two unitary gates in a quantum circuit?
1 answer
4 votes
121 views
1 bookmarks
Can local projections increase entanglement?
1 answer
4 votes
324 views
4 bookmarks
Proof that any unitary can be written as $U=e^{-iH}$ with $H$ Hamiltonian with bounded norm
1 answer
4 votes
137 views
1 bookmarks
Is there a proof or example to show that a noiseless subsystem is not necessarily closed under addition?
2 answers
4 votes
699 views
1 bookmarks
Can classical linear algebra solvers implement quantum algorithms with similar speed-ups?
1 answer
4 votes
161 views
2 bookmarks
Adding a phase to qubit: why is it necessary for arbitrary single qubit gate
2 answers
3 votes
117 views
1 bookmarks
Example of a two-qudit state whose measurement outcomes are independent in one basis but dependent in another
1 answer
2 votes
104 views
1 bookmarks
Is it possible to detect the phase $\pi$ or 0 for the single qubit circuit X H P?
1 answer
2 votes
169 views
1 bookmarks
N-Qubit Hadamard vs Quantum Fourier Transform
1 answer
2 votes
45 views
1 bookmarks
$N(\frac{1}{2},2)=3$ for vectors in a Hilbert Space
1 answer
2 votes
129 views
1 bookmarks
Nielsen & Chuang Theorem 2.6 Proof
1 answer
1 vote
57 views
1 bookmarks
How to compute the inverse of a unitary B when it's defined only by B|0⟩=XXXX?
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