Article
Multidisciplinary Sciences
Michael Ampatzis, Theodore Andronikos
Summary: The Symmetric Extensible Quantum Secret Sharing protocol is a novel protocol that securely shares secret messages using entanglement. It is characterized by symmetry and can be extended to any number of players. After the completion of the quantum part, the spymaster has the privilege of deciding when the agents can unlock the secret message.
Article
Quantum Science & Technology
Yuan Tian, Jian Li, Xiu-Bo Chen, Chong-Qiang Ye, Heng-Ji Li
Summary: An efficient semi-quantum secret sharing protocol based on Bell states is proposed in this study, which is more flexible and practical compared to existing protocols, and the qubit efficiency is increased significantly.
QUANTUM INFORMATION PROCESSING
(2021)
Article
Optics
Qin Liao, Haijie Liu, Lingjin Zhu, Ying Guo
Summary: This paper introduces a quantum secret sharing (QSS) protocol using discretely modulated coherent states (DMCSs) for multi-user key sharing, with an asymptotic security proof and numerical simulations showing potential transmission distances.
Article
Quantum Science & Technology
Lele Li, Zhaowei Han, Feiting Guan
Summary: In this paper, the authors propose an authenticable quantum multi-secret sharing scheme based on monotone span program for secure multi-key management. The scheme employs a quantum state digital signature algorithm to identify dishonest participants, enhancing its security. During the reconstruction phase, participants encode their shares onto generalized Bell states using the generalized Pauli operator to reconstruct multiple secrets. Security analysis demonstrates that the proposed scheme can defend against various attacks including entangle-measure, intercept-resend, forgery, collusion, and denial attacks.
QUANTUM INFORMATION PROCESSING
(2023)
Article
Quantum Science & Technology
Minjin Choi, Soojoon Lee
Summary: Quantum secret sharing is achieved through constructing specific quantum states in this work, allowing participants to securely share information. The article also demonstrates a method for N players to share an N-party genuine secret-sharing state, and explains the connection between the distillable rate and the relative entropy of entanglement.
QUANTUM INFORMATION PROCESSING
(2021)
Article
Quantum Science & Technology
Chen-Ming Bai, Sujuan Zhang, Lu Liu
Summary: In this paper, we propose a physical process to mask a d-dimensional quantum state into multipartite quantum systems and introduce a quantum secret sharing scheme for a specific hypergraph access structure. In the proposed protocol, the distributor shares an unknown d-dimensional quantum state and masks the secret state into a multi-party quantum systems. Participants in the authorized set reconstruct the original information state through measurements and appropriate unitary operations. The security of our scheme is also analyzed under three primary quantum attacks.
QUANTUM INFORMATION PROCESSING
(2022)
Editorial Material
Quantum Science & Technology
Tian-Yin Wang, Xiao-Xuan Wang, Xiao-Qiu Cai, Chun-Yan Wei, Rui-Ling Zhang
Summary: Dynamic secret sharing can address the problems of adding and revoking agents. However, the protocol based on Bell states analyzed in this work fails to meet the requirements for dynamic secret sharing. The authors discuss how to solve this issue and suggest a possible way to improve the protocol.
QUANTUM INFORMATION PROCESSING
(2021)
Article
Quantum Science & Technology
Chia-Wei Tsai, Chun-Wei Yang, Jason Lin
Summary: This study proposes a multiparty mediated quantum secret sharing protocol that addresses common challenges in existing protocols and improves efficiency.
QUANTUM INFORMATION PROCESSING
(2022)
Article
Physics, Multidisciplinary
Si-Jia Fu, Ke-Jia Zhang, Long Zhang, Kun-Chi Hou
Summary: In this study, a new four-party quantum secret sharing protocol based on locally indistinguishable orthogonal product (LIOP) states is proposed for quantum network communication. The protocol does not require entangled resources or complicated operations, and enhances defense against existing attacks.
FRONTIERS IN PHYSICS
(2022)
Article
Physics, Multidisciplinary
Yuan Tian, Genqing Bian, Jinyong Chang, Ying Tang, Jian Li, Chongqiang Ye
Summary: Semi-quantum cryptography communication allows quantum users to have complete quantum capabilities while classical users have limited quantum capabilities. Secret sharing is achieved by dividing secret information and requiring cooperation among participants. A novel and efficient semi-quantum secret sharing (SQSS) protocol is proposed based on hyper-entangled states, which expands the channel capacity and improves transmission efficiency. Security analysis shows that the protocol can effectively resist known attacks, providing a theoretical basis for practical applications of semi-quantum cryptography communication.
Article
Quantum Science & Technology
Shihao Wang, Bin Liu, Wei Huang, Bingjie Xu, Yang Li
Summary: At the current stage, quantum secret sharing (QSS) protocols are still facing challenges in practical application due to the expensive cost of quantum devices and the difficulties in quantum memory technology development. This paper proposes a newly designed (n,n)-threshold multiparty quantum secret sharing protocol with collective detection, which eliminates the need for quantum memory by having the sender immediately measure the agents' qubits upon receipt. This protocol shows more promise for practical application compared to previous QSS protocols with collective detection, considering the difficulties in quantum memory development. Communication security, measurement, quantum devices used, and communication efficiency are also analyzed in this study.
QUANTUM INFORMATION PROCESSING
(2023)
Article
Quantum Science & Technology
Runsheng Peng, Ying Guo, Yijun Wang, Qin Liao
Summary: Quantum secret sharing is a method that allows multiple users to share a secret key, but the dealer's position poses potential security risks. To address this issue, we propose a decentralized quantum secret sharing scheme where any honest user can act as the dealer in a quantum communication network.
QUANTUM INFORMATION PROCESSING
(2023)
Article
Physics, Multidisciplinary
Kartick Sutradhar, Hari Om
Summary: This paper introduces a secret sharing based quantum protocol for (t, n) threshold secure multiparty multiplication, allowing efficient multiplication computation at low cost. The protocol employs linear secret sharing and provides higher security against intercept, entangle-measure, collusion, collective, and coherent attacks compared to existing protocols.
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
(2021)
Article
Quantum Science & Technology
Chaoyang Li, Chongqiang Ye, Yuan Tian, Xiu-Bo Chen, Jian Li
Summary: Two quantum secret sharing (QSS) protocols utilizing four-qubit cluster state and Bell state entanglement are proposed in this paper, catering to quantum and classical users respectively. The proposed protocols demonstrate full security and resistance to common eavesdropping attacks, while also showing efficiency advantages over similar protocols in terms of qubit efficiency.
QUANTUM INFORMATION PROCESSING
(2021)
Article
Physics, Multidisciplinary
WenWen Hu, Ri-Gui Zhou, Jia Luo
Summary: A novel semi-quantum secret sharing protocol in high-dimensional quantum system using product states is proposed in this paper, which shows higher efficiency and security.
CHINESE JOURNAL OF PHYSICS
(2022)
Article
Multidisciplinary Sciences
Peng Xue, Xingze Qiu, Kunkun Wang, Barry C. Sanders, Wei Yi
Summary: Topological edge states in non-Hermitian parity-time (PT)-symmetric systems were experimentally detected in photonic quantum walks with spontaneously broken PT symmetry, providing a complete description of topological phenomena. The global Berry phase in PT-symmetric quantum-walk dynamics unambiguously defines topological invariants of the system in both the PT-symmetry-unbroken and broken regimes. These results establish a unified framework and a useful method to observe topological phenomena in PT-symmetric non-Hermitian systems.
NATIONAL SCIENCE REVIEW
(2023)
Article
Physics, Multidisciplinary
Abdul Wahab, Muqaddar Abbas, Barry C. Sanders
Summary: In this study, an atomic grating is proposed based on the phenomenon of electromagnetically induced transparency. The grating is able to switch between zeroth-order diffraction and a distinct higher-order diffraction pattern by driving a planar gaseous medium of a four-level tripod atoms with three laser beams. The behavior of the diffraction intensities of different orders is numerically investigated by varying the field detunings and orbital angular momentum number of the composite vortex light beam. The proposed scheme may have potential applications in optical memory devices by storing information to diffraction orders of the atomic grating.
NEW JOURNAL OF PHYSICS
(2023)
Article
Physics, Multidisciplinary
Yi-Zheng Zhen, Yingqiu Mao, Yu-Zhe Zhang, Feihu Xu, Barry C. Sanders
Summary: Device-independent quantum key distribution (DIQKD) is a secure method against adversaries with scalable quantum computers and malicious key establishment systems, but the current key rate is low. Therefore, we propose a DIQKD scheme based on the quantum nonlocal Mermin-Peres magic square game, which asymptotically delivers DIQKD against collective attacks even with noise. Our scheme outperforms DIQKD using the Clauser-Horne-Shimony-Holt game in terms of the number of game rounds, provided that both state visibility and detection efficiency are high enough.
PHYSICAL REVIEW LETTERS
(2023)
Article
Optics
Yingkai Ouyang, Kaumudibikash Goswami, Jacquiline Romero, Barry C. Sanders, Min-Hsiu Hsieh, Marco Tomamichel
Summary: In this paper, we introduce and analyze the concept of approximate quantum secret sharing in a formal cryptographic setting. The goal is to allow authorized players to approximately reconstruct a quantum secret, while denying access to nonauthorized players. We show that this is possible if the information leakage, measured in terms of entanglement-assisted capacity of the complementary quantum channel, is small for players outside the authorized structure and the environment.
Article
Physics, Multidisciplinary
Seyed Shakib Vedaie, Eduardo J. Paez, Nhung H. Nguyen, Norbert M. Linke, Barry C. Sanders
Summary: Researchers have successfully implemented a two-qubit gate in an ion chain using addressed Raman beams. They have optimized quantum control techniques to achieve reductions in gate duration and gate error rate.
PHYSICAL REVIEW RESEARCH
(2023)
Article
Optics
Xiao-Xu Fang, Kui An, Bai-Tao Zhang, Barry C. Sanders, He Lu
Summary: We study maximal coin-position entanglement generation via a discrete-time quantum walk, in which the coin operation is randomly selected from one of two coin operators set at each step. We solve maximal entanglement generation as an optimization problem with quantum process fidelity as the cost function. Then we determine the maximal entanglement that can be rigorously generated for any step beyond the second regardless of initial conditions with appropriate coin sequences. The simplest coin sequence comprising Hadamard and identity operations is equivalent to the generalized elephant quantum walk, which exhibits an increasingly faster spreading in terms of probability distribution. Experimentally, we demonstrate a ten-step quantum walk driven by such coin sequences with linear optics and thereby show the desired high-dimensional bipartite entanglement as well as the transport behavior of faster spreading.
Article
Physics, Fluids & Plasmas
Carlo Maria Scandolo, Gilad Gour, Barry C. Sanders
Summary: We develop a rigorous theory of external influences on finite discrete dynamical systems, going beyond the perturbation paradigm. The theory of covariant influences is developed using resource theories, for both deterministic and stochastic evolutions. We provide necessary and sufficient conditions for state transitions under deterministic covariant influences and necessary conditions in the presence of stochastic covariant influences, predicting forbidden transitions between states. Our approach, employing the framework of resource theories, unifies the behavior of different types of finite discrete dynamical systems.
Article
Astronomy & Astrophysics
Daniel J. George, Yuval R. Sanders, Mohsen Bagherimehrab, Barry C. Sanders, Gavin K. Brennen
Summary: This study introduces a multiscale representation of free scalar bosonic and Ising model fermionic quantum field theories using wavelets. The wavelet transform is shown to reveal scale-dependent subsystem entanglement entropy, renormalization of correlations in the ground state, and serve as a compressed representation of QFT ground states for studying quantum phase transitions.
Article
Physics, Multidisciplinary
Laleh Memarzadeh, Barry C. Sanders
Summary: Constructing extreme instances of completely positive trace-preserving maps is a challenging and valuable problem in quantum information theory. We introduce a systematic approach for constructing extreme channels that are covariant with respect to finite discrete groups or compact connected Lie groups.
PHYSICAL REVIEW RESEARCH
(2022)
Article
Optics
Aritra Das, Barry C. Sanders
Summary: The article presents a classically verifiable quantum scheme for blindly factorizing the semiprime 21, advancing the state of the art and paving the way for scaling blind quantum factorization in the future.
Article
Physics, Multidisciplinary
Abhijeet Alase, Robert R. Nerem, Mohsen Bagherimehrab, Peter Hoyer, Barry C. Sanders
Summary: This article introduces a quantum algorithm for the system of linear equations problem (SLEP), focusing on the query complexity in the setting of block encoding of matrix M. A quantum algorithm is constructed and a lower bound is derived, showing that the quantum query complexity for SLEP in this setting is Theta(alpha/epsilon).
PHYSICAL REVIEW RESEARCH
(2022)
Article
Quantum Science & Technology
Mohsen Bagherimehrab, Yuval R. Sanders, Dominic W. Berry, Gavin K. Brennen, Barry C. Sanders
Summary: We propose a quasilinear quantum algorithm for generating an approximation of the ground state of a quantum field theory. Our algorithm achieves a superquadratic speedup over existing methods for ground-state generation and overcomes the bottleneck in the previous approach. We present two quantum algorithms, Fourier-based and wavelet-based, for generating the ground state of a free massive scalar bosonic quantum field theory with quasilinear gate complexity.
Article
Physics, Multidisciplinary
Jizhou Wu, Barry C. Sanders
Summary: This study presents a scheme to enable the observation of higher-order multiphoton collective phases by designing a sparse interferometer, which greatly reduces complexity compared to existing schemes. The scheme addresses a major obstacle in observing large-scale collective phases by reducing optical depth and the number of beam splitters.
PHYSICAL REVIEW RESEARCH
(2022)
Article
Physics, Multidisciplinary
Kunal Sharma, Barry C. Sanders, Mark M. Wilde
Summary: This paper proposes an optimal test for measuring the performance of continuous-variable quantum teleportation and provides an analytical solution for the energy-constrained diamond distance between a photodetector and its experimental approximation. The results are relevant for experiments using continuous-variable teleportation and photodetectors.
PHYSICAL REVIEW RESEARCH
(2022)
Article
Physics, Multidisciplinary
Shu Xu, Joerg Schmiedmayer, Barry C. Sanders
Summary: This study proposes a method for Bose-Einstein condensate (BEC) interferometry and quantum logic based on nonlinear quantum mechanics. By solving the equation for evolution, a rigorous foundation for quantum gates is established, and feasible nonlinear interferometry devices are designed by combining quantum-control techniques and appropriate state-sampling techniques.
PHYSICAL REVIEW RESEARCH
(2022)