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
Qibin Ji, Yimin Liu, Xiaofeng Yin, Xiansong Liu, Zhanjun Zhang
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...... hiện toàn bộ
An improved robust ADMM algorithm for quantum state tomography
Quantum Information Processing - Tập 15 - Trang 2343-2358 - 2016
Kezhi Li, Hui Zhang, Sen Kuang, Fangfang Meng, Shuang Cong
In this paper, an improved adaptive weights alternating direction method of multipliers algorithm is developed to implement the optimization scheme for recovering the quantum state in nearly pure states. The proposed approach is superior to many existing methods because it exploits the low-rank property of density matrices, and it can deal with unexpected sparse outliers as well. The numerical exp...... hiện toàn bộ
Limitations on post-processing assisted quantum programming
Quantum Information Processing - Tập 16 - Trang 1-15 - 2017
Teiko Heinosaari, Takayuki Miyadera, Mikko Tukiainen
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-...... hiện toàn bộ
Improvements on “multiparty quantum key agreement with single particles”
Quantum Information Processing - Tập 12 - Trang 3411-3420 - 2013
Zhiwei Sun, Cai Zhang, Banghai Wang, Qin Li, Dongyang Long
Recently, Liu et al. (Quantum Inf Process 12: 1797–1805, 2013) proposed a secure multiparty quantum key agreement (MQKA) protocol with single particles. Their protocol allows N parties to negotiate a secret session key in such away that (1) outside eavesdroppers cannot gain the session key without introducing any errors; (2) the session key cannot be determined by any non-trivial subset of the par...... hiện toàn bộ
Generation and swapping of multi-qubit entangled state in a coupled superconducting resonator array
Quantum Information Processing - Tập 17 - Trang 1-16 - 2018
Xinke Li, Shengli Ma, Yuan Zhou, Jikun Xie, Fuli Li
An efficient method is proposed for the generation and swapping of multi-qubit entangled state in an array of linearly coupled superconducting resonators, each of which is coupled to N superconducting qubits. With the external driving fields to adjust the desired qubit–resonator interaction, we firstly show that the multipartite entangled state of superconducting qubits hosted in two nearest-neigh...... hiện toàn bộ
Nonlinear dynamics of continuous-variable quantum games with bounded rationality
Quantum Information Processing - - 2018
Zhe Yang, Qingbin Gong
Polygamy relations of multipartite systems
Quantum Information Processing - Tập 18 Số 4 - Trang 1-14 - 2019
Jin, Zhi-Xiang, Fei, Shao-Ming, Qiao, Cong-Feng
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).
Quantum sealed-bid auction protocol based on quantum secret sharing
Quantum Information Processing - Tập 21 - Trang 1-13 - 2022
Jing-Tao Wang, Yun Pan, Wen Liu, Zhen-Zhen Li
A quantum sealed-bid auction (QSA) with post-confirmation can realize the public verification of the honesty of bidders. In this paper, we apply the quantum secret sharing (QSS) into the post-confirmation. Surprisingly, it shows that a QSS protocol with information leakage can better ensure the security of the protocol when applied to a quantum auction. We consider a QSS scheme based on quantum st...... hiện toàn bộ
Solutions for the MaxEnt problem with symmetry constraints
Quantum Information Processing - Tập 18 - Trang 1-20 - 2019
Marcelo Losada, Federico Holik, Cesar Massri, Angelo Plastino
In this paper, we deal with the situation in which the unknown state of a quantum system has to be estimated under the assumption that it is prepared obeying a known set of symmetries. We present a system of equations and an explicit solution for the problem of determining the MaxEnt state satisfying these constraints. Our approach can be applied to very general situations, including symmetries of...... hiện toàn bộ
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
Mubashar Khan, Amer Rasheed
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 ...... hiện toàn bộ
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