# Quantum Information Processing

Quantum Information Processing > 2019 > 18 > 6 > 1-14

*q*-ary systems where

*q*is an odd prime power. Through a clever use of sequential stabilizer manipulations, we can implement several

*q*-ary logical gates in a fault-tolerant way. Furthermore, a randomized fault-tolerant code conversion procedure between arbitrary non-binary stabilizer codes is proposed, in which descendant...

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*x*-axis and the

*y*-axis. The color values are demonstrated by the former, and the latter indicates the number of pixels having the corresponding color values. Because quantum image processing (QImP) has been developed rapidly in recent years, in this paper,...

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*z*-relative R$$\acute{e}$$ e´ nyi entropy. These quantifiers satisfy all the standard criteria for well-defined measures of coherence and include some existing coherence measures as special cases.

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Quantum Information Processing > 2019 > 18 > 6 > 1-16

*d*-dimensional subspace of $$M (d,\mathbb {C})$$ M(d,C) , i.e. mutually unbiased unitary bases (MUUBs) comprising of unitary operators. We note an obvious isomorphism between the vector spaces and beyond that, we define a relevant monoid structure for...

Quantum Information Processing > 2019 > 18 > 6 > 1-10

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Quantum Information Processing > 2019 > 18 > 6 > 1-12

*X*states in nontrivial mutually unbiased bases for 4-dimensional Hilbert space are equal. We propose the concept of “autotensor...

Quantum Information Processing > 2019 > 18 > 6 > 1-14

Quantum Information Processing > 2019 > 18 > 6 > 1-21

*k*-ME concurrence as a measure of multipartite entanglement (ME) unambiguously detects all

*k*-nonseparable states in arbitrary dimensions and satisfies many important properties of an entanglement measure. Negativity is a simple computable bipartite entanglement measure. Invariant and tangle are useful tools to study the properties of the quantum states. In this paper, we mainly investigate the...