Pub Date : 2026-01-16DOI: 10.1007/s11128-025-05045-5
Yuan Tian, Jialong Wang, Ying Tang, Jian Li
Quantum secret sharing (QSS) is essential for secure multi-party information distribution. However, existing multi-party quantum secret sharing (MQSS) protocols suffer from several limitations, such as requiring the distributor to know each participant’s secret in advance, low efficiency, challenging quantum resource preparation, and complex operations. This paper proposes an efficient MQSS protocol based on single photons. The protocol utilizes single photons and simple local unitary operations for secret distribution. Participants are not required to perform measurements, which reduces the difficulty of resource preparation and improves operability. By incorporating decoy particles, the protocol can ideally achieve 100% efficiency. Security analysis demonstrates its robustness against common attacks. Compared with existing protocols, the proposed scheme excels in terms of quantum resource requirements, the distributor’s prior knowledge of secrets, and qubit efficiency. Simulations on the IBM quantum platform confirm its feasibility.
{"title":"A multi-party quantum secret sharing protocol based on single photons","authors":"Yuan Tian, Jialong Wang, Ying Tang, Jian Li","doi":"10.1007/s11128-025-05045-5","DOIUrl":"10.1007/s11128-025-05045-5","url":null,"abstract":"<div><p>Quantum secret sharing (QSS) is essential for secure multi-party information distribution. However, existing multi-party quantum secret sharing (MQSS) protocols suffer from several limitations, such as requiring the distributor to know each participant’s secret in advance, low efficiency, challenging quantum resource preparation, and complex operations. This paper proposes an efficient MQSS protocol based on single photons. The protocol utilizes single photons and simple local unitary operations for secret distribution. Participants are not required to perform measurements, which reduces the difficulty of resource preparation and improves operability. By incorporating decoy particles, the protocol can ideally achieve 100% efficiency. Security analysis demonstrates its robustness against common attacks. Compared with existing protocols, the proposed scheme excels in terms of quantum resource requirements, the distributor’s prior knowledge of secrets, and qubit efficiency. Simulations on the IBM quantum platform confirm its feasibility.</p></div>","PeriodicalId":746,"journal":{"name":"Quantum Information Processing","volume":"25 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145983216","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":"Electromagnetic structure of axial-vector mesons and implications for the muon g − 2 ","authors":"","doi":"10.1103/xbls-4zqr","DOIUrl":"https://doi.org/10.1103/xbls-4zqr","url":null,"abstract":"","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"177 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2026-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146000737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 phases and phase transitions in monitored free fermion systems of localization","authors":"","doi":"10.1103/q1d9-943y","DOIUrl":"https://doi.org/10.1103/q1d9-943y","url":null,"abstract":"","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"02 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146000763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Demonstration of a novel phase-space painting method in a coupled lattice to mitigate space charge in high-intensity hadron beams","authors":"","doi":"10.1103/bvwq-34jf","DOIUrl":"https://doi.org/10.1103/bvwq-34jf","url":null,"abstract":"","PeriodicalId":20069,"journal":{"name":"Physical review letters","volume":"142 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2026-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146000793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Topological charges, Fermi arcs, and surface states of K 4 crystal","authors":"","doi":"10.1103/jc96-wrmj","DOIUrl":"https://doi.org/10.1103/jc96-wrmj","url":null,"abstract":"","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"57 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146001493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}
Pub Date : 2026-01-16DOI: 10.1007/s10909-025-03363-7
Y. Shimazu, T. Miyatake, K. Ueno, H. Watanabe, M. Uehara
Layered transition metal dichalcogenides, such as MoS2, are promising platforms for exploring electric-field-controlled phenomena. While gate-induced superconductivity has been extensively studied in single-crystalline MoS2 flakes, the behavior of bulk polycrystalline MoS2 under similar conditions remains unexplored. In this study, we investigate electric-field-induced phase transitions in bulk polycrystalline MoS2 using an ionic liquid (IL) gate, focusing on the role of electrode configuration and contact proximity in transport properties, and on the emergence of superconductivity in bulk samples. Three different electrode configurations were employed to examine the impact of contact geometry. In setups with distant contacts, the samples exhibited insulating behavior down to 1.8 K, whereas in the configuration with contacts placed close to the gate electrode, a clear metal–insulator transition and the onset of superconductivity were observed, with a maximum Tc of 4.2 K. Analysis revealed that the contact resistance strongly depends on the distance between the gate electrode and the voltage/current leads, differing by nearly an order of magnitude between contacts located near and far from the gate. The critical apparent sheet resistance at the metal–insulator transition was estimated to be ~ 50 Ω, much lower than the quantum resistance, likely due to penetration of the IL into the granular polycrystalline structure. These findings highlight the crucial role of electrode configuration in IL gating of bulk materials and demonstrate that electrostatic doping can induce superconductivity in polycrystalline systems, extending the scope of gate-controlled quantum phenomena to materials for which high-quality single crystals are difficult to obtain.
{"title":"Electric-Field-Induced Insulator-to-Metal and Superconducting Transitions in Bulk Polycrystalline MoS2: Role of the Gate Electrode Configuration","authors":"Y. Shimazu, T. Miyatake, K. Ueno, H. Watanabe, M. Uehara","doi":"10.1007/s10909-025-03363-7","DOIUrl":"10.1007/s10909-025-03363-7","url":null,"abstract":"<div><p>Layered transition metal dichalcogenides, such as MoS<sub>2</sub>, are promising platforms for exploring electric-field-controlled phenomena. While gate-induced superconductivity has been extensively studied in single-crystalline MoS<sub>2</sub> flakes, the behavior of bulk polycrystalline MoS<sub>2</sub> under similar conditions remains unexplored. In this study, we investigate electric-field-induced phase transitions in bulk polycrystalline MoS<sub>2</sub> using an ionic liquid (IL) gate, focusing on the role of electrode configuration and contact proximity in transport properties, and on the emergence of superconductivity in bulk samples. Three different electrode configurations were employed to examine the impact of contact geometry. In setups with distant contacts, the samples exhibited insulating behavior down to 1.8 K, whereas in the configuration with contacts placed close to the gate electrode, a clear metal–insulator transition and the onset of superconductivity were observed, with a maximum <i>T</i><sub>c</sub> of 4.2 K. Analysis revealed that the contact resistance strongly depends on the distance between the gate electrode and the voltage/current leads, differing by nearly an order of magnitude between contacts located near and far from the gate. The critical apparent sheet resistance at the metal–insulator transition was estimated to be ~ 50 Ω, much lower than the quantum resistance, likely due to penetration of the IL into the granular polycrystalline structure. These findings highlight the crucial role of electrode configuration in IL gating of bulk materials and demonstrate that electrostatic doping can induce superconductivity in polycrystalline systems, extending the scope of gate-controlled quantum phenomena to materials for which high-quality single crystals are difficult to obtain.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"222 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10909-025-03363-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145983338","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}
Pub Date : 2026-01-16DOI: 10.1088/1361-6382/ae3424
Pradosh Keshav MV
We develop a stochastic extension of the Wheeler–DeWitt equation in Friedmann–Lemaître–Robertson–Walker (FLRW) minisuperspace and show that quantum backreaction can dynamically regulate the big bang singularity without imposing external boundary conditions. Using Laplace–Beltrami (LB) quantisation and an open-system treatment of coarse-grained graviton modes, we obtain a stochastic Hamiltonian evolution equation in which the diffusion coefficient takes the form . This multiplicative noise vanishes at the origin and renders a = 0 an entrance boundary in Feller’s classification, leading to super-exponential suppression of the LB weighted stationary density and zero probability flux into the singular point. At large scale factor, the global behaviour depends on the cosmological sector: de Sitter and positive potential-dominated regimes exhibit power-law stationary tails, whereas confining potentials or negative effective cosmological constant lead to an entrance boundary at infinity and a globally normalisable steady state. Taken together, these results indicate that stochastic backreaction arising from semiclassical coarse-graining provides a consistent and dynamical mechanism for singularity avoidance in minisuperspace quantum cosmology.
{"title":"Can stochastic clocks in FLRW minisuperspace prevent dynamical singularities?","authors":"Pradosh Keshav MV","doi":"10.1088/1361-6382/ae3424","DOIUrl":"https://doi.org/10.1088/1361-6382/ae3424","url":null,"abstract":"We develop a stochastic extension of the Wheeler–DeWitt equation in Friedmann–Lemaître–Robertson–Walker (FLRW) minisuperspace and show that quantum backreaction can dynamically regulate the big bang singularity without imposing external boundary conditions. Using Laplace–Beltrami (LB) quantisation and an open-system treatment of coarse-grained graviton modes, we obtain a stochastic Hamiltonian evolution equation in which the diffusion coefficient takes the form . This multiplicative noise vanishes at the origin and renders a = 0 an entrance boundary in Feller’s classification, leading to super-exponential suppression of the LB weighted stationary density and zero probability flux into the singular point. At large scale factor, the global behaviour depends on the cosmological sector: de Sitter and positive potential-dominated regimes exhibit power-law stationary tails, whereas confining potentials or negative effective cosmological constant lead to an entrance boundary at infinity and a globally normalisable steady state. Taken together, these results indicate that stochastic backreaction arising from semiclassical coarse-graining provides a consistent and dynamical mechanism for singularity avoidance in minisuperspace quantum cosmology.","PeriodicalId":10282,"journal":{"name":"Classical and Quantum Gravity","volume":"18 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145972327","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}
Pub Date : 2026-01-16DOI: 10.1088/1361-6633/ae3983
Xiaoliang Xiao,Xingyu Yue,Jinyang Ni,Jin-Zhu Zhao,Ruiqiang Wang,Xin Wang,Guoqing Chang,Yuanjun Jin
Manipulating the nonlinear Hall effect (NLHE) through non-volatile approach is of great significance for device applications, yet effective gating control remains elusive. In this Letter, using first-principles calculations and symmetry analysis, we propose a universal design principle for gate-field control of the NLHE in bilayer systems. Using bilayer SnSe and SnTe, the well-known ferroelectric and thermoelectric materials, as examples, it reveals that the inherent hidden polarization can activate a layer-locked hidden Berry curvature dipole (BCD) under an applied gate field, thereby inducing a giant nonlinear Hall current. The hidden polarization locked to BCD in a gate field, experiences a pseudospin Zeeman field as a spin in magnetic field. Therefore, reversing the direction of the gate-field can switch the preferred pseudospin orientation, enabling the switchable second-order NLHE. This mechanism does not require intrinsic magnetism and provides a binary ON/OFF switching control method, greatly expanding the application potential of layered systems in nonlinear Hall transport. Our findings not only demonstrate the universal design principle of the switchable second-order NLHE but also can be extended to other gate-field-controllable nonlinear transport and nonlinear optics.
{"title":"A universal design principle for switchable control of the second-order nonlinear Hall effect.","authors":"Xiaoliang Xiao,Xingyu Yue,Jinyang Ni,Jin-Zhu Zhao,Ruiqiang Wang,Xin Wang,Guoqing Chang,Yuanjun Jin","doi":"10.1088/1361-6633/ae3983","DOIUrl":"https://doi.org/10.1088/1361-6633/ae3983","url":null,"abstract":"Manipulating the nonlinear Hall effect (NLHE) through non-volatile approach is of great significance for device applications, yet effective gating control remains elusive. In this Letter, using first-principles calculations and symmetry analysis, we propose a universal design principle for gate-field control of the NLHE in bilayer systems. Using bilayer SnSe and SnTe, the well-known ferroelectric and thermoelectric materials, as examples, it reveals that the inherent hidden polarization can activate a layer-locked hidden Berry curvature dipole (BCD) under an applied gate field, thereby inducing a giant nonlinear Hall current. The hidden polarization locked to BCD in a gate field, experiences a pseudospin Zeeman field as a spin in magnetic field. Therefore, reversing the direction of the gate-field can switch the preferred pseudospin orientation, enabling the switchable second-order NLHE. This mechanism does not require intrinsic magnetism and provides a binary ON/OFF switching control method, greatly expanding the application potential of layered systems in nonlinear Hall transport. Our findings not only demonstrate the universal design principle of the switchable second-order NLHE but also can be extended to other gate-field-controllable nonlinear transport and nonlinear optics.","PeriodicalId":21110,"journal":{"name":"Reports on Progress in Physics","volume":"83 1","pages":""},"PeriodicalIF":18.1,"publicationDate":"2026-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145986351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
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