Quantum Information Processing
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Quantum operation sharing with symmetric and asymmetric W states
Quantum Information Processing - Tập 12 - Trang 2453-2464 - 2013
Two tripartite schemes for sharing a single-qubit operation on a remote target state are proposed with symmetric and asymmetric W states, respectively. They are treated and compared from the aspects of quantum resource consumption, operation complexity, classical resource consumption, success probability and efficiency. It is found that the first scheme is better than the second one. In particular......
Limitations on post-processing assisted quantum programming
Quantum Information Processing - Tập 16 - Trang 1-15 - 2017
A quantum multimeter is a programmable device that can implement measurements of different observables depending on the programming quantum state inserted into it. The advantage of this arrangement over a single-purpose device is in its versatility: one can realize various measurements simply by changing the programming state. The classical manipulation of measurement output data is known as post-......
Polygamy relations of multipartite systems
Quantum Information Processing - Tập 18 Số 4 - Trang 1-14 - 2019
We investigate the polygamy relations of multipartite quantum states. General polygamy inequalities are given in the $$\alpha $$ th $$(\alpha \ge 2)$$ power of concurrence of assistance, $$\beta $$ th $$(\beta \ge 1)$$ power of entanglement of assistance, and the squared convex-roof extended negativity of assistance (SCRENoA).
A secure controlled quantum image steganography scheme based on the multi-channel effective quantum image representation model
Quantum Information Processing - Tập 22 - Trang 1-32 - 2023
In this article, we introduce a multi-channel effective representation of quantum images (MCEQI) based on the improved flexible representation of quantum images (IFRQI) to facilitate the quantum analysis of colored digital images. We use an effective method to encode the intensity value of each pixel of a color digital image into a quantum state vector that yields a highly distinctive probability ......
Pieceable fault tolerant conversion between 5-qubit code and 7-CSS code
Quantum Information Processing - Tập 19 Số 8 - 2020
Statistics of projective measurement on a quantum probe as a witness of noncommutativity of algebra of a probed system
Quantum Information Processing - Tập 21 - Trang 1-22 - 2022
We consider a quantum probe P undergoing pure dephasing due to its interaction with a quantum system S. The dynamics of P is then described by a well-defined sub-algebra of operators of S, i.e. the “accessible” algebra on S from the point of view of P. We consider sequences of n measurements on P, and investigate the relationship between Kolmogorov consistency of probabilities of obtaining seque......
Optimal estimation of parameters for Schwinger effect
Quantum Information Processing - Tập 19 - Trang 1-11 - 2020
We study the optimal estimation of quantum parameters, in the framework of local quantum estimation theory, for excitations of Dirac field under a strong electric field. The study is carried out by employing the key concept of quantum metrology–quantum Fisher information. We find that the quality of estimation is very sensitive to characteristic parameters of the Dirac field. By suitably designing......
Atom–photon entanglement beyond the multi-photon resonance condition
Quantum Information Processing - Tập 15 - Trang 199-213 - 2015
Atom–photon entanglement between the dressed atom and its spontaneous emission is studied in a near-degenerate three-level V-type atomic system in multi-photon resonance condition and beyond it. Taking into account the quantum interference due to the spontaneous emission, the density matrix equations of motion are numerically calculated in two-photon resonance condition and beyond it. The dynamica......
Christopher A. Fuchs: Coming of age with quantum information: notes on a Paulian idea
Quantum Information Processing - Tập 11 - Trang 633-636 - 2011
Benchmarking Advantage and D-Wave 2000Q quantum annealers with exact cover problemsAbstract We benchmark the quantum processing units of the largest quantum annealers to date, the $$5000+$$ hiện toàn bộ
Quantum Information Processing -
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