Physical Review Applied最新文献_第10页

Fast ZZ-free entangling gates for superconducting qubits assisted by a driven resonator 驱动谐振器辅助超导量子比特的快速无 ZZ 纠缠门

IF 4.6 2区物理与天体物理

Physical Review Applied Pub Date : 2024-09-04 DOI: 10.1103/physrevapplied.22.034007

Ziwen Huang, Taeyoon Kim, Tanay Roy, Yao Lu, Alexander Romanenko, Shaojiang Zhu, Anna Grassellino

{"title":"Fast ZZ-free entangling gates for superconducting qubits assisted by a driven resonator","authors":"Ziwen Huang, Taeyoon Kim, Tanay Roy, Yao Lu, Alexander Romanenko, Shaojiang Zhu, Anna Grassellino","doi":"10.1103/physrevapplied.22.034007","DOIUrl":"https://doi.org/10.1103/physrevapplied.22.034007","url":null,"abstract":"Engineering high-fidelity two-qubit gates is an indispensable step toward practical quantum computing. For superconducting quantum platforms, one important setback is the stray interaction between qubits, which causes significant coherent errors. For transmon qubits, protocols for mitigating such errors usually involve fine-tuning the hardware parameters or introducing usually noisy flux-tunable couplers. In this work, we propose a simple scheme to cancel these stray interactions. The coupler used for such cancelation is a driven high-coherence resonator, where the amplitude and frequency of the drive serve as control knobs. Through the resonator-induced-phase interaction, the static <math display=\"inline\" overflow=\"scroll\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>Z</mi><mi>Z</mi></math> coupling can be entirely neutralized. We numerically show that such a scheme can enable short and high-fidelity entangling gates, including cross-resonance controlled-not (cnot) gates within 40 ns and adiabatic controlled-<math display=\"inline\" overflow=\"scroll\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>Z</mi></math> gates within 140 ns. Our architecture is not only <math display=\"inline\" overflow=\"scroll\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>Z</mi><mi>Z</mi></math>-free, but also contains no extra noisy components, such that it preserves the coherence times of fixed-frequency transmon qubits. With the state-of-the-art coherence times, the error of our cross-resonance cnot gate can be reduced to below <math display=\"inline\" overflow=\"scroll\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><msup><mn>10</mn><mrow><mo>−</mo><mn>4</mn></mrow></msup></math>.","PeriodicalId":20109,"journal":{"name":"Physical Review Applied","volume":"32 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185215","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}

引用次数: 0

Hybrid magnonics with localized spoof surface-plasmon polaritons 具有局部欺骗性表面等离子体极化子的混合磁性元件

IF 4.6 2区物理与天体物理

Physical Review Applied Pub Date : 2024-09-04 DOI: 10.1103/physrevapplied.22.034009

Yuzan Xiong, Andrew Christy, Zixin Yan, Amin Pishehvar, Muntasir Mahdi, Junming Wu, James F. Cahoon, Binbin Yang, Michael C. Hamilton, Xufeng Zhang, Wei Zhang

{"title":"Hybrid magnonics with localized spoof surface-plasmon polaritons","authors":"Yuzan Xiong, Andrew Christy, Zixin Yan, Amin Pishehvar, Muntasir Mahdi, Junming Wu, James F. Cahoon, Binbin Yang, Michael C. Hamilton, Xufeng Zhang, Wei Zhang","doi":"10.1103/physrevapplied.22.034009","DOIUrl":"https://doi.org/10.1103/physrevapplied.22.034009","url":null,"abstract":"Hybrid magnonic systems have emerged as a promising direction for information propagation with preserved coherence. Because of the high tunability of magnons, their interactions with microwave photons can be engineered to probe novel phenomena based on strong photon-magnon coupling. Improving the photon-magnon coupling strength can be done by tuning the structure of microwave resonators to better interact with the magnon counterpart. Planar resonators have been explored due to their potential for on-chip integration, but only common modes from stripline-based resonators have been used. Here, we present a microwave spiral resonator supporting spoof localized surface plasmons (LSPs) and implement it in the investigation of photon-magnon coupling for hybrid magnonic applications. We showcase strong magnon-LSP photon coupling using a ferrimagnetic yttrium iron garnet sphere. We discuss the engineering capacity of the photon mode frequency and spatial field distributions of the spiral resonator via both experiment and simulation. As a result of the localized photon mode profiles, the resulting magnetic field concentrates near the surface dielectrics, giving rise to an enhanced magnetic filling factor. The strong coupling and large engineering space render the spoof LSPs an interesting contender in developing novel hybrid magnonic systems and functionalities.","PeriodicalId":20109,"journal":{"name":"Physical Review Applied","volume":"11 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142224225","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}

引用次数: 0

Nyquist-compliant cycloidal computed tomography 符合奈奎斯特标准的摆线计算机断层扫描

IF 4.6 2区物理与天体物理

Physical Review Applied Pub Date : 2024-09-04 DOI: 10.1103/physrevapplied.22.034011

G. Lioliou, A. Charman, O. Roche i Morgó, M. Endrizzi, S. Arridge, D. Bate, A. Olivo, C. Hagen

{"title":"Nyquist-compliant cycloidal computed tomography","authors":"G. Lioliou, A. Charman, O. Roche i Morgó, M. Endrizzi, S. Arridge, D. Bate, A. Olivo, C. Hagen","doi":"10.1103/physrevapplied.22.034011","DOIUrl":"https://doi.org/10.1103/physrevapplied.22.034011","url":null,"abstract":"Cycloidal computed tomography, by which a lateral sample translation and rotation are combined, is a fully-fly-scan-compatible acquisition scheme for micro-computed-tomography systems using amplitude-modulated beams. Such systems have gained popularity, as they enable x-ray phase-contrast imaging (XPCI) and aperture-driven spatial resolution. The former provides superior contrast for weakly attenuating samples, while the latter allows the resolution of a micro-computed-tomography system to be increased beyond the conventional limit dictated by the source and detector. Such systems initially required time-inefficient step-and-shoot acquisitions, a limitation that has been removed by the development of cycloidal computed tomography. Here we derive cycloidal sampling conditions that are optimal in the sense of the Nyquist-Shannon theorem. Their availability enables the acquisition of well-sampled (i.e., high-resolution) XPCI images in a time-efficient manner, a long-sought outcome with relevance to laboratory implementations, where scan times have traditionally been long, and to synchrotron implementations, where the next frontier is to achieve high-speed (e.g., dynamic) imaging. We make no assumptions on the type of x-ray source used, but demonstrate the optimal conditions with a rotating-anode x-ray tube.","PeriodicalId":20109,"journal":{"name":"Physical Review Applied","volume":"45 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142224223","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}

引用次数: 0

Nonlocal twist sequences in floppy kagome chains 松软卡戈米链中的非局部扭曲序列

IF 4.6 2区物理与天体物理

Physical Review Applied Pub Date : 2024-09-03 DOI: 10.1103/physrevapplied.22.034001

Pegah Azizi, Stefano Gonella

{"title":"Nonlocal twist sequences in floppy kagome chains","authors":"Pegah Azizi, Stefano Gonella","doi":"10.1103/physrevapplied.22.034001","DOIUrl":"https://doi.org/10.1103/physrevapplied.22.034001","url":null,"abstract":"The twisted kagome family comprises a spectrum of configurations that can be realized through the sweep of a single configurational degree of freedom known as a twist angle. Recently, it was shown that certain pairs of configurations along this sweep were linked by duality transformations and displayed matching phonon spectra. In this work, we introduce an intercell-connection system that spreads the lattice in the dimension orthogonal to the tessellation plane. The resulting three-dimensional character of the lattice allows us to sweep the entirety of the twist-angle spectrum, including all the compact configurations featuring overlapping triangles that, in a strictly two-dimensional space, are forbidden. Duality provides precious guidance for interpreting the availability of floppy mechanisms arising in the compact configurations through the one-to-one correspondence with their expanded counterparts. Our focus is on the compact configuration corresponding to a null twist angle, where the lattice degenerates to a chain. From the perspective of the chain, several of the local connections between neighboring lattice cells play the role of nonlocal long-range interactions between cells of the chain. We demonstrate experimentally some peculiar behavior that results from such nonlocality, including a selective activation of floppy sequences that is informed by the direction of loading.","PeriodicalId":20109,"journal":{"name":"Physical Review Applied","volume":"59 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185219","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}

引用次数: 0

Implementation of Shor’s algorithm with a single photon in 32 dimensions 用 32 维单光子实现肖尔算法

IF 4.6 2区物理与天体物理

Physical Review Applied Pub Date : 2024-09-03 DOI: 10.1103/physrevapplied.22.034003

Hao-Cheng Weng, Chih-Sung Chuu

引用次数: 0

Extension of Babinet’s relations to reflective metasurfaces: Application to the simultaneous control of wavefront and polarization 将巴比内关系扩展到反射元表面：应用于同时控制波前和偏振

IF 4.6 2区物理与天体物理

Physical Review Applied Pub Date : 2024-09-03 DOI: 10.1103/physrevapplied.22.034002

Takayoshi Fujikawa, Toshihiro Nakanishi

引用次数: 0

Interplay between magnetism and superconductivity in a hybrid magnon-photon bilayer system 混合磁子-光子双层体系中磁性与超导性的相互作用

IF 4.6 2区物理与天体物理

Physical Review Applied Pub Date : 2024-09-03 DOI: 10.1103/physrevapplied.22.034004

Alberto Ghirri, Claudio Bonizzoni, Maksut Maksutoglu, Marco Affronte

引用次数: 0

Non-Hermitian topological ohmmeter 非赫米拓扑欧姆计

IF 4.6 2区物理与天体物理

Physical Review Applied Pub Date : 2024-09-03 DOI: 10.1103/physrevapplied.22.l031001

Viktor Könye, Kyrylo Ochkan, Anastasiia Chyzhykova, Jan Carl Budich, Jeroen van den Brink, Ion Cosma Fulga, Joseph Dufouleur

引用次数: 0

Investigation of the cesium activation of GaN photocathodes by low-energy electron microscopy 利用低能电子显微镜研究氮化镓光电阴极的铯活化情况

IF 4.6 2区物理与天体物理

Physical Review Applied Pub Date : 2024-09-03 DOI: 10.1103/physrevapplied.22.034005

Mylène Sauty, Cameron W. Johnson, Tanay Tak, Wan Ying Ho, Yi Chao Chow, James S. Speck, Andreas K. Schmid, Claude Weisbuch, Jacques Peretti

{"title":"Investigation of the cesium activation of GaN photocathodes by low-energy electron microscopy","authors":"Mylène Sauty, Cameron W. Johnson, Tanay Tak, Wan Ying Ho, Yi Chao Chow, James S. Speck, Andreas K. Schmid, Claude Weisbuch, Jacques Peretti","doi":"10.1103/physrevapplied.22.034005","DOIUrl":"https://doi.org/10.1103/physrevapplied.22.034005","url":null,"abstract":"Low-energy electron microscopy (LEEM) was performed on <math display=\"inline\" overflow=\"scroll\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>p</mi></math>-<math display=\"inline\" overflow=\"scroll\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><mi>Ga</mi><mi mathvariant=\"normal\">N</mi></mrow></math> samples during in situ cesium deposition. LEEM images of electron reflectivity recorded as a function of the incident electron energy at different <math display=\"inline\" overflow=\"scroll\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>Cs</mi></math> coverages allowed to spatially resolve the evolution of the local work function (WF) during the activation process. While the average WF drops by more than 3 eV, the local WF remains quite uniform across the surface throughout the activation process. Maximum fluctuations of less than 0.2 eV were observed in the WF maps for <math display=\"inline\" overflow=\"scroll\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>Cs</mi></math> coverage of a fraction of a monolayer. These fluctuations are mainly related to the surface topography, in particular, to the atomic steps’ structure, which replicates the substrate miscut. Apart from these weak spatial fluctuations, no <math display=\"inline\" overflow=\"scroll\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>Cs</mi></math> clusters that would induce strong local WF contrast were observed at the scale of the 20-nm resolution of the measurements. These observations agree with the simple model of semiconductor activation to negative electron affinity that describes the formation of a dipole layer as responsible for the lowering of the WF. Additionally, at complete <math display=\"inline\" overflow=\"scroll\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>Cs</mi></math> coverage, the WF becomes fully homogeneous over the surface, smoothing out features originating from defects and topography.","PeriodicalId":20109,"journal":{"name":"Physical Review Applied","volume":"66 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185217","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}

引用次数: 0

Quantum transport signature of strain-induced scalar and pseudovector potentials in a crenelated h-BN/graphene heterostructure 石墨烯/氮化硼异质结构中应变诱导标量和伪矢量势的量子输运特征

IF 4.6 2区物理与天体物理

Physical Review Applied Pub Date : 2024-08-30 DOI: 10.1103/physrevapplied.22.024076

Romaine Kerjouan, Michael Rosticher, Aurélie Pierret, Kenji Watanabe, Takashi Taniguchi, Sukhdeep Dhillon, Robson Ferreira, Daniel Dolfi, Mark Goerbig, Bernard Plaçais, Juliette Mangeney

{"title":"Quantum transport signature of strain-induced scalar and pseudovector potentials in a crenelated h-BN/graphene heterostructure","authors":"Romaine Kerjouan, Michael Rosticher, Aurélie Pierret, Kenji Watanabe, Takashi Taniguchi, Sukhdeep Dhillon, Robson Ferreira, Daniel Dolfi, Mark Goerbig, Bernard Plaçais, Juliette Mangeney","doi":"10.1103/physrevapplied.22.024076","DOIUrl":"https://doi.org/10.1103/physrevapplied.22.024076","url":null,"abstract":"The sharp Dirac cone of electronic dispersion confers to graphene a remarkable sensitivity to strain. It is usually encoded in scalar and pseudovector potentials, induced by the modification of hopping parameters, which have given rise to new phenomena at the nanoscale, such as giant pseudomagnetic fields and valley polarization. Here, we unveil the effect of these potentials on the quantum transport across a succession of strain-induced barriers. We use high-mobility <math display=\"inline\" overflow=\"scroll\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>h</mi></math>-<math display=\"inline\" overflow=\"scroll\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>BN</mi></math>–encapsulated graphene, transferred over a large (<math display=\"inline\" overflow=\"scroll\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mn>10</mn><mo>×</mo><mn>10</mn><mspace width=\"0.2em\"></mspace><mtext fontfamily=\"times\">μ</mtext><msup><mrow><mi mathvariant=\"normal\">m</mi></mrow><mn>2</mn></msup></math>) crenelated <math display=\"inline\" overflow=\"scroll\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>h</mi></math>-<math display=\"inline\" overflow=\"scroll\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>BN</mi></math> substrate. We show the emergence of a broad resistance ancillary peak at positive energy that arises from Klein-tunneling barriers induced by the tensile strain at the trench edges. Our theoretical study, in agreement with experiment, quantitatively highlights the balanced contributions of strain-induced scalar and pseudovector potentials on ballistic transport. Our results establish crenelated van der Waals heterostructures as a promising platform for strain engineering in view of applications and basic physics.","PeriodicalId":20109,"journal":{"name":"Physical Review Applied","volume":"9 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142224251","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}

引用次数: 0