Quantum Information Processing最新文献_第10页

Hardware efficient decomposition of the Laplace operator and its application to the Helmholtz and the Poisson equation on quantum computer 拉普拉斯算子的硬件高效分解及其在量子计算机上对亥姆霍兹和泊松方程的应用

IF 2.2 3区物理与天体物理

Quantum Information Processing Pub Date : 2024-07-10 DOI: 10.1007/s11128-024-04458-y

Jaehyun Bae, Gwangsu Yoo, Satoshi Nakamura, Shota Ohnishi, Dae Sin Kim

{"title":"Hardware efficient decomposition of the Laplace operator and its application to the Helmholtz and the Poisson equation on quantum computer","authors":"Jaehyun Bae, Gwangsu Yoo, Satoshi Nakamura, Shota Ohnishi, Dae Sin Kim","doi":"10.1007/s11128-024-04458-y","DOIUrl":"10.1007/s11128-024-04458-y","url":null,"abstract":"<div><p>With the rapid advancement of quantum computers in the past few years, there is ongoing development of algorithms aimed at solving problems that are difficult to tackle with classical computers. A pertinent instance of this is the resolution of partial differential equations (PDEs), where a current trend involves the exploration of variational quantum algorithms (VQAs) tailored to efficiently function on the noisy intermediate-scale quantum (NISQ) devices. Recently, VQAs for solving the Poisson equation have been proposed, and these algorithms require highly entangled quantum states or specific types of qubit entanglement to compute the expectation value of the Laplace operator. Implementing such requirements on NISQ devices poses a significant challenge. To overcome this problem, we propose a new method for representing the Laplace operator in the finite difference formulation. Since the quantum circuits introduced for evaluating the expectation value of the Laplace operator through proposed method do not require processes that degrade the fidelity of computation, such as swap operations or generation of highly entangled states, they can be easily implemented on NISQ devices. In the regime of quantum supremacy (the number of qubits is approximately 50), our proposed approach necessitates approximately one-third fewer CNOT operations compared to conventional methods. To assess the effectiveness of the proposed method, we conduct computations for finding the eigenvalues of the Helmholtz equation and solving the Poisson equation on cloud-based quantum hardware. We calculate the fidelity of quantum states required for each method through quantum tomography and also estimate the fidelity in the quantum supremacy regime. We believe that the proposed method can be applied to other PDEs having the Laplace operator and greatly assists in solving them.</p></div>","PeriodicalId":746,"journal":{"name":"Quantum Information Processing","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141577251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photonic communications with quadrature-amplitude modulated quantum coherent states in alternated and dual polarizations 交替和双极化正交振幅调制量子相干态的光子通信

IF 2.2 3区物理与天体物理

Quantum Information Processing Pub Date : 2024-07-08 DOI: 10.1007/s11128-024-04479-7

Arturo Arvizu-Mondragón, Francisco J. Mendieta-Jiménez, César A. López-Mercado, Ramón Muraoka-Espíritu

引用次数: 0

A new attack resistant encryption method based on hybrid chaotic-quantum key distribution (CQKD) 基于混沌量子密钥分配（CQKD）的新型抗攻击加密方法

IF 2.2 3区物理与天体物理

Quantum Information Processing Pub Date : 2024-07-06 DOI: 10.1007/s11128-024-04434-6

Vida Mamandi, Nahid Ardalani, Behbod Ghalamkari

{"title":"A new attack resistant encryption method based on hybrid chaotic-quantum key distribution (CQKD)","authors":"Vida Mamandi, Nahid Ardalani, Behbod Ghalamkari","doi":"10.1007/s11128-024-04434-6","DOIUrl":"10.1007/s11128-024-04434-6","url":null,"abstract":"<div><p>In this paper, a new hybrid chaotic-quantum encryption model is investigated aiming to solve the interception trouble of information transmission through insecure environment. In this model, the image encryption method is studied using block diagonal chaotic (BDC) matrix and quantum based private key. The block diagonal chaotic model is designed with structured matrix based on two different nonlinear chaotic sequences and private key bits combined with quantum walks (QWs) path. At sender, the key bits convert to QWs states to increase tamper resistant of quantum key distribution in noisy communication channel. At the receiver side, the received data is retrieved merely by both initial key bits and states as similar as the sender initial key bits and states. If the eavesdropper attempts to measure quantum based private key, the key bits change to different states compared to real sender states and drops the bits eavesdropped in quantum channel. We call the hybrid chaotic image encryption method with private key based on quantum states as chaotic quantum key distribution (CQKD) method. The key space is evaluated using CQKD model rather than chaotic based encryption method without quantum distributed states over impure channels. Considering the sensitivity of block diagonal chaotic-based encryption BDC method with accuracy of 10<sup>(−32)</sup>, the key space is increased from <span>({10}^{111})</span> to <span>({10}^{142}times {10}^{a}times f(DeltaPhi ) times {(frac{1}{Delta {p}_{e}})}^{{rm N}_{e}})</span> with phase-shifted QWs. It guarantees no information access by attackers considering high security against brute-force attacks and outperforms rather than the conventional chaotic encryption schemes.</p></div>","PeriodicalId":746,"journal":{"name":"Quantum Information Processing","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141566805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lorentz invariants of pure three-qubit states 纯三量子比特态的洛伦兹不变式

IF 2.2 3区物理与天体物理

Quantum Information Processing Pub Date : 2024-07-06 DOI: 10.1007/s11128-024-04454-2

A. R. Usha Devi, Sudha, H. Akshata Shenoy, H. S. Karthik, B. N. Karthik

引用次数: 0

Tree-based quantum anonymous ranking protocol 基于树的量子匿名排序协议

IF 2.2 3区物理与天体物理

Quantum Information Processing Pub Date : 2024-07-05 DOI: 10.1007/s11128-024-04476-w

Justin Joseph, Syed Taqi Ali

引用次数: 0

Quantum-compliant users scheduling optimization in joint transmission mobile access networks 联合传输移动接入网络中符合量子标准的用户调度优化

IF 2.2 3区物理与天体物理

Quantum Information Processing Pub Date : 2024-07-04 DOI: 10.1007/s11128-024-04471-1

Deborah Volpe, Giovanni Amedeo Cirillo, Roberto Fantini, Andrea Boella, Giovanni Mondo, Mariagrazia Graziano, Giovanna Turvani

{"title":"Quantum-compliant users scheduling optimization in joint transmission mobile access networks","authors":"Deborah Volpe, Giovanni Amedeo Cirillo, Roberto Fantini, Andrea Boella, Giovanni Mondo, Mariagrazia Graziano, Giovanna Turvani","doi":"10.1007/s11128-024-04471-1","DOIUrl":"10.1007/s11128-024-04471-1","url":null,"abstract":"<div><p>Joint Transmission (JT) is the dynamic coordination of transmission and/or reception at multiple geographically separated sites to improve end-user service quality. When user equipment receives signals from multiple sites, downstream performance improves. An optimization problem arises in selecting the best user subset for JT within a multiple-input–multiple-output (MIMO) system. Unfortunately, a pure brute-force approach is not feasible due to exponential time growth with user combinations, unsuitable for real-time selection in mobile networks with users continuously changing in time. This article proposes quantum-compliant heuristics using quadratic unconstrained binary optimization (QUBO) for JT user scheduling. QUBO handles initial user selection, followed by brute-force exploration for the solution. Numerical results indicate that quantum-compliant methods decrease solution time without substantial accuracy loss compared to brute-force methods.\u0000</p></div>","PeriodicalId":746,"journal":{"name":"Quantum Information Processing","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11128-024-04471-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141552292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-party three-dimensional asymmetric cyclic controlled quantum teleportation in noisy environment 嘈杂环境中的多方三维非对称循环受控量子远距传输

IF 2.2 3区物理与天体物理

Quantum Information Processing Pub Date : 2024-07-03 DOI: 10.1007/s11128-024-04474-y

She-Xiang Jiang, Jin Shi

{"title":"Multi-party three-dimensional asymmetric cyclic controlled quantum teleportation in noisy environment","authors":"She-Xiang Jiang, Jin Shi","doi":"10.1007/s11128-024-04474-y","DOIUrl":"10.1007/s11128-024-04474-y","url":null,"abstract":"<div><p>In this paper, a new scheme for asymmetric cyclic controlled teleportation of arbitrary three-dimensional unknown quantum states is proposed by performing three-dimensional Bell-state measurements and three-dimensional Hadamard transformation. The entangled state of thirteen-qutrit acts as the quantum channel to connect senders and receivers, which is constructed by a three-qutrit entangled state and five two-qutrit entangled states. In this scheme, Alice wants to transmit an arbitrary unknown single-qutrit state to Bob, at the same time, Bob wants to transmit an arbitrary unknown two-qutrit entangled state to Charlie and Charlie wants to transmit an arbitrary unknown three-qutrit entangled state to Alice under the control of the supervisor David. Participants can reconstruct the original states and make the scheme perfectly by performing appropriate unitary operation. Then, the scheme can be generalized to realize the asymmetric cyclic controlled quantum teleportation of <i>N</i> (<i>N</i> > 3) participants in the three-dimensional system, and come up with two universal schemes are determined by the parity of the participant. Furthermore, the scheme is investigated in two different noisy channels: amplitude-damping noise and phase-damping noise, and calculated the fidelities of the output states. It is demonstrated that the fidelities only depend on the coefficients of the initial state and the decoherence noisy rate. The security of the scheme is briefly analyzed and compares with the previous schemes in terms of efficiency. The proposed scheme contributes to advancing understanding of high-dimensional quantum teleportation.</p></div>","PeriodicalId":746,"journal":{"name":"Quantum Information Processing","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141514374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Radial and angular correlations in a confined system of two atoms in two-dimensional geometry 二维几何中两个原子封闭系统的径向和角相关性

IF 2.2 3区物理与天体物理

Quantum Information Processing Pub Date : 2024-07-02 DOI: 10.1007/s11128-024-04470-2

Przemysław Kościk

引用次数: 0

ENR DigiSig: an efficient post-quantum digital signature scheme using polar codes ENR DigiSig：使用极性码的高效后量子数字签名方案

IF 2.2 3区物理与天体物理

Quantum Information Processing Pub Date : 2024-07-02 DOI: 10.1007/s11128-024-04462-2

Rupali Khurana, Ekta Narwal, Sonika Ahlawat

引用次数: 0

On the effectiveness of Bayesian discrete feedback for quantum information reclaiming 论贝叶斯离散反馈在量子信息回收中的有效性

IF 2.2 3区物理与天体物理

Quantum Information Processing Pub Date : 2024-06-28 DOI: 10.1007/s11128-024-04467-x

Milajiguli Rexiti, Samad Khabbazi Oskouei, Stefano Mancini

引用次数: 0