Jia Hao, Yu-Guang Yang, Guang-Bao Xu, Dong-Huan Jiang, Dan Li, Yi-Hua Zhou, Wei-Min Shi
{"title":"Quantum private information retrieval with lattice-based access authentication","authors":"Jia Hao, Yu-Guang Yang, Guang-Bao Xu, Dong-Huan Jiang, Dan Li, Yi-Hua Zhou, Wei-Min Shi","doi":"10.1007/s11128-025-04765-y","DOIUrl":"10.1007/s11128-025-04765-y","url":null,"abstract":"<div><p>Most quantum key distribution (QKD)-based quantum private information retrieval (QPIR) protocols cannot resist denial-of-service (DoS) attacks. Furthermore, these protocols generally involve issues with an unspecified error rate threshold. To address these issues, we propose the QPIR protocol based on two lattice-based post-quantum algorithms, i.e., CRYSTALS-Dilithium for digital signatures and CRYSTALS-KYBER for key establishment. Specifically, in the quantum secure direct communication network, part of the key establishment process is replaced by the verification of signatures encoded in quantum states. This approach not only achieves access authentication but also effectively resists DoS attacks. We provide a detailed security analysis of our protocol. Furthermore, we provide a method for selecting three parameters <span>(m)</span>, <span>(d)</span> and <span>(theta )</span> according to security requirements, especially for the security against DoS attacks, thus offering greater flexibility in our protocol.</p></div>","PeriodicalId":746,"journal":{"name":"Quantum Information Processing","volume":"24 5","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144108649","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}
{"title":"Maximally Entangled GHZ States for Quantum Information Processing using MS Gate","authors":"Vaishali Sood, Rishi Pal Chauhan","doi":"10.1007/s11128-025-04766-x","DOIUrl":"10.1007/s11128-025-04766-x","url":null,"abstract":"<div><p>This paper researches maximally entangled Greenberger–Horne–Zeilinger (GHZ) states in a four-qubit system using Ytterbium-171 ions. A framework for a multiple instruction single data (MISD) control framework is proposed and implemented with a hyperfine ground state of Ytterbium-171 (<span>(^{171}text {Yb}^{+})</span>) ions, insensitive to noise due to magnetic field fluctuations of first order. The global entangling Molmer–Sorensen operations and single-qubit rotations apprehend the collective vibrational phonon mode ion interactions. We prove the resilience of the states by generating the pulse sequence with <span>(1.73 times 10^{3})</span> Hz leakage noise to mitigate errors due to laser-induced decoherence and qubit crosstalk. Results demonstrate the effective creation of GHZ states with a fidelity of 96.42% extending the operational scope of trapped-ion quantum systems towards practical quantum information processing.</p></div>","PeriodicalId":746,"journal":{"name":"Quantum Information Processing","volume":"24 5","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144100147","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}
Carlos Octavio A. Ribeiro Neto, Bertúlio de Lima Bernardo
{"title":"Thermodynamics of ancilla-assisted erasure of quantum information","authors":"Carlos Octavio A. Ribeiro Neto, Bertúlio de Lima Bernardo","doi":"10.1007/s11128-025-04770-1","DOIUrl":"10.1007/s11128-025-04770-1","url":null,"abstract":"<div><p>Landauer’s principle sets a fundamental limit on the heat dissipated when one classical bit of information is erased from a memory, thereby establishing a direct link between information theory and thermodynamics. With the advent of quantum technologies, a natural question arises: How does Landauer’s principle extend to the quantum regime? In this work, we study the thermodynamics of a quantum channel that erases an arbitrary state of a qubit memory in contact with a reservoir composed of a thermal qubit and a pure ancilla qubit. The channel is based only on CNOT gates, and the introduction of the ancilla makes it capable of operating beyond Landauer’s limit, when the temperature of the thermal qubit is above a given limit temperature. However, we observe that, since the introduction of the ancilla does not correspond to a strict Landauer’s scenario, our protocol does not represent a violation of Landauer’s principle.</p></div>","PeriodicalId":746,"journal":{"name":"Quantum Information Processing","volume":"24 5","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091186","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}
{"title":"Entanglement concentration with nonidentical entanglement sources","authors":"A.-Peng Liu, Qi Guo, Liu-Yong Cheng, Hongyuan Ma","doi":"10.1007/s11128-025-04761-2","DOIUrl":"10.1007/s11128-025-04761-2","url":null,"abstract":"<div><p>We present two entanglement concentration protocols (ECPs) for unknown less-entangled states. Different from conventional ECPs where two or more copies of less-entangled states are selected from the same ensemble, here we describe two general ECPs for two initially nonidentical less-entangled states. In the first protocol, we suppose the coefficients of the two initial entangled states are different. While in the second protocol, we suppose not only the coefficients but also the bit information are different between the two initial entangled states. We show that the successful operation of a conventional ECP may not obtain a more entangled state, while the discarded source pair, which is usually regarded as a failure in conventional ECPs, may have more entanglement than the initial one. We give the criteria of the successful concentration to obtain a more entangled state. Our ECPs may have potential application in practical long-distance quantum communications.</p></div>","PeriodicalId":746,"journal":{"name":"Quantum Information Processing","volume":"24 5","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091187","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}
Xiuli Song, Jianbing Zhou, Qian Chen, Tao Wu, Yousheng Zhou
{"title":"Quantum homomorphic encryption scheme based on elliptic curve cryptography","authors":"Xiuli Song, Jianbing Zhou, Qian Chen, Tao Wu, Yousheng Zhou","doi":"10.1007/s11128-025-04746-1","DOIUrl":"10.1007/s11128-025-04746-1","url":null,"abstract":"<div><p>As an important component of the quantum encryption algorithm family, quantum homomorphic encryption performs evaluation calculations on ciphertext quantum states without decryption, and the calculated results are the same as those obtained by directly calculating plaintext quantum states. In the evaluation process, when using <i>T</i>-gate as the evaluation operator, an error of <i>S</i>-gate will be generated. In the current scheme, the complexity of the method to eliminate this error is too high. Therefore, in this paper, elliptic curve cryptography(ECC) and quantum encoding methods are integrated into the quantum homomorphic encryption scheme, enhancing the security of evaluation parameters during transmission. At the same time, a method is proposed to eliminate <i>S</i>-gate errors by constructing an <span>(Gamma _u)</span>-operator. Compared to other similar QHE encryption schemes, the proposed scheme has higher security and reduces the complexity of eliminating <i>S</i>-gate errors. Finally, the security of each process in the algorithm was analyzed, and the feasibility and correctness of the algorithm were verified through simulation experiments.</p></div>","PeriodicalId":746,"journal":{"name":"Quantum Information Processing","volume":"24 5","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144084936","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}
{"title":"Comparative study of squeezing-assisted Mach–Zehnder interferometer under homodyne, product detection and first-order correlation measurements","authors":"Anand Kumar, Gaurav Shukla, Devendra Kumar Mishra","doi":"10.1007/s11128-025-04751-4","DOIUrl":"10.1007/s11128-025-04751-4","url":null,"abstract":"<div><p>Precision measurement plays an important role in the field of quantum metrology. Choosing an appropriate measurement scheme improves measurement outcomes. Homodyne detection schemes, product detection schemes and correlation measurement schemes are the detection schemes that provide better information than the intensity detection schemes. Here, we compare the performance of all three detection schemes on a squeezing-assisted Mach–Zehnder interferometer in real scenarios. This comparison helps in the application of quantum sensing.\u0000</p></div>","PeriodicalId":746,"journal":{"name":"Quantum Information Processing","volume":"24 5","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144074094","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}
Haoyu Liao, Qingbin Luo, Yuanmeng Zheng, Yi Lv, Lang Ding
{"title":"Quantum circuit implementation for (mathbb {F}_{2^8}) multiplication based on algebraic curve method","authors":"Haoyu Liao, Qingbin Luo, Yuanmeng Zheng, Yi Lv, Lang Ding","doi":"10.1007/s11128-025-04749-y","DOIUrl":"10.1007/s11128-025-04749-y","url":null,"abstract":"<div><p>Binary field multiplication is widely used in quantum information processing, such as quantum algorithms, cryptanalysis and mathematical arithmetic. The core quantum resources of binary field multiplication are the qubit count and Toffoli depth of its quantum circuit, both of which are largely dependent on the Toffoli gate count. In this paper, we analyze the multiplicative complexity of binary field and present quantum circuits for <span>(mathbb {F}_{2^8})</span> multiplication from the perspective of time and space. We find that the Toffoli gate count of quantum circuit corresponds to the bilinear complexity in <span>(mathbb {F}_{2^n})</span> multiplication. The Toffoli gate count obtained by the algebraic curve method increases linearly with <span>({varvec{n}})</span>, which is slower than the sub-quadratic complexity of Karatsuba algorithm and the iterated logarithm complexity of Chinese remainder theorem (CRT). To demonstrate the advantages of the algebraic curve method, we use elliptic curve bilinear algorithm in <span>(mathbb {F}_{(2^2)^4})</span> and composite field arithmetic (CFA) to present two types quantum circuits for <span>(mathbb {F}_{2^8})</span> multiplication, both of which have 24 Toffoli gates and are the lowest at present. The Toffoli depth of the time-efficient quantum circuit is only 1, and the product <span>({varvec{Dcdot W}})</span> of the depth and width of the circuit is 72, which is lower than before. The space-efficient quantum circuits require 24 qubits and maintain the Toffoli depth of 4, their <span>({varvec{Dcdot W}})</span> and Toffoli depth are reduced by at least 77.8<span>(%)</span> compared with the most advanced research.</p></div>","PeriodicalId":746,"journal":{"name":"Quantum Information Processing","volume":"24 5","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949470","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}
{"title":"Two coupled spins via Ising model as the working substance for quantum Carnot and Otto cycles","authors":"Neda Valizadeh, Zahra Ebadi, Hosein Mohammadzadeh","doi":"10.1007/s11128-025-04763-0","DOIUrl":"10.1007/s11128-025-04763-0","url":null,"abstract":"<div><p>We study a quantum Carnot and Otto engine consisting of two coupled spin-<span>(frac{1}{2})</span> particles and two coupled spin-1 particles within the Ising model, focusing on how the system transitions between functioning as a heat engine or a refrigerator based on the external magnetic fields and coupling constant. The magnetic fields influence the energy levels of the spins, while the coupling constant governs the strength of spin interactions, enabling enhanced energy transfer and utilization. Our analysis reveals that the coupled system achieves higher efficiency and coefficient of performance (COP) compared to its uncoupled counterpart under specific conditions. By identifying optimal values for the magnetic fields and coupling constant, we demonstrate how the interplay of these parameters allows the coupled system to outperform uncoupled systems in both energy conversion and thermal regulation, highlighting the potential of spin coupling in optimizing quantum thermodynamic devices.</p></div>","PeriodicalId":746,"journal":{"name":"Quantum Information Processing","volume":"24 5","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949468","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}
{"title":"Non-Hermitian coupling strength induced exceptional points and nonlinear effects","authors":"Wenlin Li, Chong Li, Heshan Song","doi":"10.1007/s11128-025-04747-0","DOIUrl":"10.1007/s11128-025-04747-0","url":null,"abstract":"<div><p>Non-Hermitian quantum theories with parity-time symmetry have been rapidly developed and hold great promise for future applications. Unlike most of the existing works that consider the symmetry of the free energy terms (e.g., gain–loss system), in this paper it is proved that a realizable non-Hermitian two-body interaction with asymmetric coupling strength between quantum resonance systems can also have a real spectrum after the exceptional point. Such a non-Hermitian interaction is realized in designed optomechanics, and we find that some nonlinear effects, such as synchronization phase transition and chaos, are observed as expected. Moreover, all quantum properties of the whole system, including the asymmetric interaction parts, can be solved by full quantum theory. Our results provide a platform for realizing parity-time symmetry devices and studying properties of non-Hermitian quantum mechanics.</p></div>","PeriodicalId":746,"journal":{"name":"Quantum Information Processing","volume":"24 5","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949465","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}
{"title":"Supersymmetric extension of Deutsch–Jozsa algorithm","authors":"Abdeslem Khemakhmia, Habib Aissaoui","doi":"10.1007/s11128-025-04753-2","DOIUrl":"10.1007/s11128-025-04753-2","url":null,"abstract":"<div><p>This work introduces a supersymmetric (SUSY) extension of the Deutsch–Jozsa algorithm, leveraging superqubits and supergates to enhance quantum computational efficiency. We present a theoretical framework for SUSY-based quantum information processing, demonstrating how superqubit manipulation via supergates preserves the exponential speedup of the Deutsch–Jozsa algorithm while improving resource utilization. Numerical simulations using Qiskit validate the protocol’s advantages over conventional quantum approaches. Additionally, we establish foundational connections between supersymmetry and quantum computing, highlighting potential applications in cryptography and optimization.</p></div>","PeriodicalId":746,"journal":{"name":"Quantum Information Processing","volume":"24 5","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949471","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}