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Characterizing families of $p^2$ orthogonal $p \times p$ unitaries?

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#linear-algebra #operator-theory #quantum-information
171
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Question concerning Stirling’s Approximation

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#quantum-mechanics #quantum-information
737
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Does $\mathcal{B}(\mathcal{H})=\mathcal{H}\otimes\mathcal{H}^*$ in infinite dimensions?

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#functional-analysis #hilbert-spaces #tensor-products #quantum-information
120
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Difference between operator defined on a space and operator represented in a space

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#linear-algebra #abstract-algebra #functional-analysis #representation-theory #quantum-information
89
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Problem in quantum information theory

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#mathematical-physics #quantum-mechanics #quantum-information
731
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What is the essential difference between classical and quantum information geometry?

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#differential-geometry #information-theory #quantum-mechanics #quantum-information #information-geometry
227
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The Kraus representation of a completely depolarising channel

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#quantum-information
276
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Intuition for Kitaev's geometrical lemma

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#linear-algebra #computational-complexity #quantum-information
3.8k
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How do unitary matrices preserve the magnitude of unit vectors?

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#linear-algebra #matrices #vector-spaces #quantum-computation #quantum-information
33
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How can one define the quantum interferometric power in the case of a multiparametric system using the quantum Fisher information matrix?

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#quantum-mechanics #quantum-information #fisher-information
335
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Pure states on subalgebras of $\mathcal{B}(\mathcal{H})$ in finite dimensions.

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#functional-analysis #operator-algebras #c-star-algebras #von-neumann-algebras #quantum-information
229
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Lower bound for quantum relative entropy

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#inequality #information-theory #entropy #quantum-information
6.7k
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Bitwise inner product and orthogonality

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#inner-products #quantum-computation #quantum-information
204
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Summation over set notation

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#linear-algebra #tensor-products #quantum-information
155
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Partition function inequality for Gibbs states associated with graphs

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#inequality #spectral-graph-theory #quantum-information

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