Nature Physics最新文献_第9页

Publisher Correction: Heavy-tailed neuronal connectivity arises from Hebbian self-organization 出版商更正：重尾神经元连通性源于海比自组织

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2024-12-19 DOI: 10.1038/s41567-024-02748-x

Christopher W. Lynn, Caroline M. Holmes, Stephanie E. Palmer

引用次数: 0

Controlling interactions between high-frequency phonons and single quantum systems using phononic crystals 利用声子晶体控制高频声子与单量子系统之间的相互作用

IF 17.6 1区物理与天体物理

Nature Physics Pub Date : 2024-12-18 DOI: 10.1038/s41567-024-02697-5

Kazuhiro Kuruma, Benjamin Pingault, Cleaven Chia, Michael Haas, Graham D. Joe, Daniel Rimoli Assumpcao, Sophie Weiyi Ding, Chang Jin, C. J. Xin, Matthew Yeh, Neil Sinclair, Marko Lončar

{"title":"Controlling interactions between high-frequency phonons and single quantum systems using phononic crystals","authors":"Kazuhiro Kuruma, Benjamin Pingault, Cleaven Chia, Michael Haas, Graham D. Joe, Daniel Rimoli Assumpcao, Sophie Weiyi Ding, Chang Jin, C. J. Xin, Matthew Yeh, Neil Sinclair, Marko Lončar","doi":"10.1038/s41567-024-02697-5","DOIUrl":"10.1038/s41567-024-02697-5","url":null,"abstract":"The ability to control phonons in solids is key in many fields of quantum science, ranging from quantum information processing to sensing. Phonons often act as a source of noise and decoherence when solid-state quantum systems interact with the phonon bath of their host matrix. In this study, we demonstrate the ability to control the phononic local density of states of the host matrix using phononic crystals and measure its positive impact on single quantum systems. We design and fabricate diamond phononic crystals with features down to around 20 nm, resulting in a high-frequency complete phononic bandgap from 50 to 70 GHz. The engineered local density of states is probed using single silicon-vacancy colour centres embedded in the phononic crystals. We observe an 18-fold reduction in the phonon-induced orbital relaxation rate of the emitters compared to bulk, thereby demonstrating that the phononic crystal suppresses spontaneous single-phonon processes. Furthermore, we show that our approach can efficiently suppress single-phonon–emitter interactions up to 20 K, allowing the investigation of multi-phonon processes in the emitters. Our results represent an important step towards the realization of efficient phonon–emitter interfaces that can be used for quantum acoustodynamics and quantum phononic networks. The phonon density of states in diamond is engineered using phononic crystals to suppress single-phonon processes that induce decoherence in individual quantum emitters.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"21 1","pages":"77-82"},"PeriodicalIF":17.6,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142840856","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}

引用次数: 0

Nishimori transition across the error threshold for constant-depth quantum circuits 恒定深度量子电路跨误差阈值的西森转变

IF 17.6 1区物理与天体物理

Nature Physics Pub Date : 2024-12-16 DOI: 10.1038/s41567-024-02696-6

Edward H. Chen, Guo-Yi Zhu, Ruben Verresen, Alireza Seif, Elisa Bäumer, David Layden, Nathanan Tantivasadakarn, Guanyu Zhu, Sarah Sheldon, Ashvin Vishwanath, Simon Trebst, Abhinav Kandala

{"title":"Nishimori transition across the error threshold for constant-depth quantum circuits","authors":"Edward H. Chen, Guo-Yi Zhu, Ruben Verresen, Alireza Seif, Elisa Bäumer, David Layden, Nathanan Tantivasadakarn, Guanyu Zhu, Sarah Sheldon, Ashvin Vishwanath, Simon Trebst, Abhinav Kandala","doi":"10.1038/s41567-024-02696-6","DOIUrl":"10.1038/s41567-024-02696-6","url":null,"abstract":"Quantum computing involves the preparation of entangled states across many qubits. This requires efficient preparation protocols that are stable to noise and gate imperfections. Here we demonstrate the generation of the simplest long-range order—Ising order—using a measurement-based protocol on 54 system qubits in the presence of coherent and incoherent errors. We implement a constant-depth preparation protocol that uses classical decoding of measurements to identify long-range order that is otherwise hidden by the randomness of quantum measurements. By experimentally tuning the error rates, we demonstrate the stability of this decoded long-range order in two spatial dimensions, up to a critical phase transition belonging to the unusual Nishimori universality class. Although in classical systems Nishimori physics requires fine-tuning multiple parameters, here it arises as a direct result of the Born rule for measurement probabilities. Our study demonstrates the emergent phenomena that can be explored on quantum processors beyond a hundred qubits. Measurements combined with post-processing of their outcomes can be used to prepare ordered quantum states. It has been shown that they can drive a Nishimori phase transition into a disordered state even in the presence of quantum errors.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"21 1","pages":"161-167"},"PeriodicalIF":17.6,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142825429","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}

引用次数: 0

Evidence for fractional matter coupled to an emergent gauge field in a quantum spin ice 分数物质与量子自旋冰中涌现规范场耦合的证据

IF 17.6 1区物理与天体物理

Nature Physics Pub Date : 2024-12-12 DOI: 10.1038/s41567-024-02711-w

Victor Porée, Han Yan, Félix Desrochers, Sylvain Petit, Elsa Lhotel, Markus Appel, Jacques Ollivier, Yong Baek Kim, Andriy H. Nevidomskyy, Romain Sibille

{"title":"Evidence for fractional matter coupled to an emergent gauge field in a quantum spin ice","authors":"Victor Porée, Han Yan, Félix Desrochers, Sylvain Petit, Elsa Lhotel, Markus Appel, Jacques Ollivier, Yong Baek Kim, Andriy H. Nevidomskyy, Romain Sibille","doi":"10.1038/s41567-024-02711-w","DOIUrl":"10.1038/s41567-024-02711-w","url":null,"abstract":"Electronic spins can form long-range entangled phases of condensed matter named quantum spin liquids. They are expected to form in frustrated magnets that do not exhibit symmetry-breaking order down to zero temperature. Quantum spin ice is a theoretically well-established example described by an emergent quantum electrodynamics, with quasiparticle excitations behaving like photons and fractionally charged matter. However, in frustrated magnets it remains difficult to establish convincing experimental evidence for quantum spin liquid ground states and their fractional excitations. Here we study the time-dependent magnetic response of the candidate quantum spin ice material Ce2Sn2O7. We find a gapped spectrum that features a threshold and peaks that match theories for pair production and propagation of fractional matter excitations strongly coupled to a background quantum electrodynamic field. The multiple peaks in our neutron spectroscopy data are a specific signature of the so-called π-flux phase of quantum spin ice, providing spectroscopic evidence for fractionalization in a three-dimensional quantum spin liquid. Quantum fluctuations in frustrated magnets are expected to produce unconventional emergent behaviour. Neutron spectroscopy measurements now provide evidence for emergent gauge fields in a pyrochlore spin ice.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"21 1","pages":"83-88"},"PeriodicalIF":17.6,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142809867","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}

引用次数: 0

Author Correction: Real-space imaging of phase transitions in bridged artificial kagome spin ice 作者更正：桥接人工kagome自旋冰相变的实空间成像

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2024-12-12 DOI: 10.1038/s41567-024-02747-y

Kevin Hofhuis, Sandra Helen Skjærvø, Sergii Parchenko, Hanu Arava, Zhaochu Luo, Armin Kleibert, Peter Michael Derlet, Laura Jane Heyderman

引用次数: 0

Into the islands of inversion 进入颠倒的岛屿

IF 17.6 1区物理与天体物理

Nature Physics Pub Date : 2024-12-12 DOI: 10.1038/s41567-024-02718-3

Anna Corsi

引用次数: 0

Isotope facilities aim to complete the nuclear chart 同位素设施的目的是完成核图表