Physical Review Research最新文献_第3页

Generation of ultrashort ion pulses from ultrafast electron-stimulated desorption 超快电子刺激解吸产生超短离子脉冲

Physical Review Research Pub Date : 2024-09-16 DOI: 10.1103/physrevresearch.6.l032066

M. C. Chirita Mihaila, G. L. Szabo, A. Redl, M. Goldberger, A. Niggas, R. A. Wilhelm

引用次数: 0

Higher-order Poincaré spheres and spatiospectral Poincaré beams 高阶 Poincaré 球和空间谱 Poincaré 光束

Physical Review Research Pub Date : 2024-09-16 DOI: 10.1103/physrevresearch.6.033298

R. Fickler, L. Kopf, M. Ornigotti

引用次数: 0

Comment on “Tunneling-tip-induced collapse of the charge gap in the excitonic insulator Ta2NiSe5” 关于 "激子绝缘体 Ta2NiSe5 中隧道尖端诱导的电荷间隙塌缩 "的评论

Physical Review Research Pub Date : 2024-09-16 DOI: 10.1103/physrevresearch.6.038001

Dowook Kim, So Young Kim, Jun Sung Kim, Arthur P. Baddorf, An-Ping Li, Tae-Hwan Kim

{"title":"Comment on “Tunneling-tip-induced collapse of the charge gap in the excitonic insulator Ta2NiSe5”","authors":"Dowook Kim, So Young Kim, Jun Sung Kim, Arthur P. Baddorf, An-Ping Li, Tae-Hwan Kim","doi":"10.1103/physrevresearch.6.038001","DOIUrl":"https://doi.org/10.1103/physrevresearch.6.038001","url":null,"abstract":"In this study, we investigate the discrepancy between the estimate of Q. He et al. [Phys. Rev. Res. 3, L032074 (2021)], who observed a remarkable collapse of the exciton gap in <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><msub><mi>Ta</mi><mn>2</mn></msub><msub><mi>NiSe</mi><mn>5</mn></msub></mrow></math> due to the electrostatic field between the scanning tunneling microscope (STM) tip and the sample, and that of a recent angle-resolved photoemission spectroscopy investigation [C. Chen et al., Phys. Rev. Res. 5, 043089 (2023)]. It is proposed that a critical factor contributing to this discrepancy is due to He et al.'s assumption of a constant work function of the STM tip. This assumption led to an underestimation of the tip-induced electric field. Using a literature value for the sample work function, a more substantial electric field strength is obtained, which resolves the apparent conflict between the doping estimates of these two techniques. Furthermore, our findings highlight the importance of the STM tip condition, which can significantly impact the tip work function and, consequently, influence the doping estimation in experiments involving tip-induced electric fields.","PeriodicalId":20546,"journal":{"name":"Physical Review Research","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142248820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stabilizing quantum simulations of lattice gauge theories by dissipation 通过耗散稳定格规理论的量子模拟

Physical Review Research Pub Date : 2024-09-16 DOI: 10.1103/physrevresearch.6.033306

Tobias Schmale, Hendrik Weimer

引用次数: 0

Genuine non-Gaussian entanglement of light and quantum coherence for an atom from noisy multiphoton spin-boson interactions 来自噪声多光子自旋玻色子相互作用的原子的真正非高斯纠缠光和量子相干性

Physical Review Research Pub Date : 2024-09-16 DOI: 10.1103/physrevresearch.6.033302

Pradip Laha, P. A. Ameen Yasir, Peter van Loock

{"title":"Genuine non-Gaussian entanglement of light and quantum coherence for an atom from noisy multiphoton spin-boson interactions","authors":"Pradip Laha, P. A. Ameen Yasir, Peter van Loock","doi":"10.1103/physrevresearch.6.033302","DOIUrl":"https://doi.org/10.1103/physrevresearch.6.033302","url":null,"abstract":"Harnessing entanglement and quantum coherence plays a central role in advancing quantum technologies. In quantum optical light-atom platforms, these two fundamental resources are often associated with a Jaynes-Cummings model description describing the coherent exchange of a photon between an optical resonator mode and a two-level spin. In a generic nonlinear spin-boson system, more photons and more modes will take part in the interactions. Here we consider such a generalization: the two-mode multiphoton Jaynes-Cummings (MPJC) model. We demonstrate how entanglement and quantum coherence can be optimally generated and subsequently manipulated in experimentally accessible parameter regimes. A detailed comparative analysis of this model reveals that nonlinearities within the MPJC interactions produce genuinely non-Gaussian entanglement, devoid of Gaussian contributions, from noisy resources. More specifically, strong coherent sources may be replaced by weaker, incoherent ones, significantly reducing the resource overhead, though at the expense of reduced efficiency. At the same time, increasing the multiphoton order of the MPJC interactions expedites the entanglement generation process, thus rendering the whole generation scheme again more efficient and robust. We further explore the use of additional dispersive spin-boson interactions and Kerr nonlinearities in order to create spin coherence solely from incoherent sources and to enhance the quantum correlations, respectively. As for the latter, somewhat unexpectedly, there is not necessarily an increase in quantum correlations due to the augmented nonlinearity. Towards possible applications of the MPJC model, we show how, with appropriately chosen experimental parameters, we can engineer arbitrary NOON states as well as the tripartite W state.","PeriodicalId":20546,"journal":{"name":"Physical Review Research","volume":"162 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142248866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Propulsion of a chiral swimmer in viscoelastic fluids 手性游泳器在粘弹性流体中的推进力

Physical Review Research Pub Date : 2024-09-16 DOI: 10.1103/physrevresearch.6.033304

Takuya Kobayashi, John J. Molina, Ryoichi Yamamoto

引用次数: 0

Pulse instabilities can shape virus-immune coevolution 脉冲不稳定性可影响病毒与免疫的共同进化

Physical Review Research Pub Date : 2024-09-16 DOI: 10.1103/physrevresearch.6.033300

David A. Kessler, Herbert Levine

引用次数: 0

Quantum counterpart of equipartition theorem: A Möbius inversion approach 等分定理的量子对应物：莫比乌斯反演法

Physical Review Research Pub Date : 2024-09-13 DOI: 10.1103/physrevresearch.6.l032064

Xin-Hai Tong, Yao Wang

引用次数: 0

Effective light-induced Hamiltonian for atoms with large nuclear spin 大核自旋原子的有效光诱导哈密顿方程

Physical Review Research Pub Date : 2024-09-13 DOI: 10.1103/physrevresearch.6.033293

D. Burba, H. Dunikowski, M. Robert-de-Saint-Vincent, E. Witkowska, G. Juzeliūnas

{"title":"Effective light-induced Hamiltonian for atoms with large nuclear spin","authors":"D. Burba, H. Dunikowski, M. Robert-de-Saint-Vincent, E. Witkowska, G. Juzeliūnas","doi":"10.1103/physrevresearch.6.033293","DOIUrl":"https://doi.org/10.1103/physrevresearch.6.033293","url":null,"abstract":"Ultracold fermionic atoms, having two valence electrons, exhibit a distinctive internal state structure, wherein the nuclear spin becomes decoupled from the electronic degrees of freedom in the ground electronic state. Consequently, the nuclear spin states are well isolated from the environment, rendering these atomic systems an opportune platform for quantum computation and quantum simulations. Coupling with off-resonance light is an essential tool to selectively and coherently manipulate the nuclear spin states. In this paper, we present a systematic derivation of the effective Hamiltonian for the nuclear spin states of ultracold fermionic atoms due to such an off-resonance light. We obtain compact expressions for the scalar, vector, and tensor light shifts taking into account both linear and quadratic contributions to the hyperfine splitting. The analysis has been carried out using the Green operator approach and solving the corresponding Dyson equation. Finally, we analyze different scenarios of light configurations which lead to the vector- and tensor-light shifts, as well as the pure spin-orbit coupling for the nuclear spin.","PeriodicalId":20546,"journal":{"name":"Physical Review Research","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142248871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multiplexed quantum state transfer in waveguides 波导中的复用量子态传输

Physical Review Research Pub Date : 2024-09-13 DOI: 10.1103/physrevresearch.6.033294

Guillermo F. Peñas, Ricardo Puebla, Juan José García-Ripoll

{"title":"Multiplexed quantum state transfer in waveguides","authors":"Guillermo F. Peñas, Ricardo Puebla, Juan José García-Ripoll","doi":"10.1103/physrevresearch.6.033294","DOIUrl":"https://doi.org/10.1103/physrevresearch.6.033294","url":null,"abstract":"In this article, we consider a realistic waveguide implementation of a quantum network that serves as a testbed to show how to maximize the storage and manipulation of quantum information in QED setups. We analyze two approaches using wavepacket engineering and quantum state transfer protocols. First, we propose and design a family of orthogonal photons in the time domain. These photons allow for a selective interaction with distinct targeted qubits. Yet, mode multiplexing employing resonant nodes is largely spoiled by cross-talk effects. This motivates the second approach, namely, frequency multiplexing. Here we explore the limits of frequency multiplexing through the waveguide, analyzing its capabilities to host and faithfully transmit photons of different frequencies within a given bandwidth. We perform detailed one- and two-photon simulations and provide theoretical bounds for the fidelity of coherent quantum state transfer protocols under realistic conditions. Our results show that state-of-the-art experiments can employ dozens of multiplexed photons with global fidelities fulfilling the requirements imposed by fault-tolerant quantum computing. This is with the caveat that the conditions for single-photon fidelity are met.","PeriodicalId":20546,"journal":{"name":"Physical Review Research","volume":"80 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142211064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0