Nature Physics最新文献

Constant-overhead magic state distillation 恒定开销的神奇状态蒸馏

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2025-09-16 DOI: 10.1038/s41567-025-03026-0

Adam Wills, Min-Hsiu Hsieh, Hayata Yamasaki

{"title":"Constant-overhead magic state distillation","authors":"Adam Wills, Min-Hsiu Hsieh, Hayata Yamasaki","doi":"10.1038/s41567-025-03026-0","DOIUrl":"https://doi.org/10.1038/s41567-025-03026-0","url":null,"abstract":"Most schemes for realistic quantum computing require access to so-called magic states to allow universal quantum computing. Because the preparation process may be noisy, magic state distillation methods are needed to improve their accuracy and suppress any potential errors. Unfortunately, magic state distillation is resource-intensive and often considered a bottleneck to scalable quantum computation. Here, the cost is defined by the overhead: the ratio of noisy input magic states to cleaner outputs. This is known to scale as ({mathcal{O}}({log }^{gamma }(1/epsilon ))) as ϵ → 0, where ϵ is the output error rate and γ is some constant. Reducing this overhead, corresponding to smaller γ, is highly desirable to remove the bottleneck. However, identifying the smallest achievable exponent γ for distilling magic states of qubits has proved challenging. Here, we resolve this problem by demonstrating protocols with the optimal exponent γ = 0, thus corresponding to magic state distillation with a constant overhead, and we show that this is achievable for the most important magic states such as (leftvert {mathsf{T}}rightrangle) and (leftvert {mathsf{CCZ}}rightrangle). This is achieved by using algebraic geometry constructions to build the first asymptotically good quantum codes with transversal non-Clifford gates, for which we also construct an efficient decoder with linear decoding radius.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"67 1","pages":""},"PeriodicalIF":19.6,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145067839","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

Observation of the Yamaji effect in a cuprate superconductor 铜超导体中亚马吉效应的观察

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2025-09-16 DOI: 10.1038/s41567-025-03032-2

Mun K. Chan, Katherine A. Schreiber, Oscar E. Ayala-Valenzuela, Eric D. Bauer, Arkady Shekhter, Neil Harrison

引用次数: 0

Decoding frequency-modulated signals increases information entropy in bacterial second messenger networks 解码频率调制信号增加了细菌第二信使网络的信息熵

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2025-09-15 DOI: 10.1038/s41567-025-03030-4

Rongrong Zhang, Shengjie Wan, Jiarui Xiong, Lei Ni, Ye Li, Yajia Huang, Bing Li, Mei Li, Shuai Yang, Fan Jin

{"title":"Decoding frequency-modulated signals increases information entropy in bacterial second messenger networks","authors":"Rongrong Zhang, Shengjie Wan, Jiarui Xiong, Lei Ni, Ye Li, Yajia Huang, Bing Li, Mei Li, Shuai Yang, Fan Jin","doi":"10.1038/s41567-025-03030-4","DOIUrl":"https://doi.org/10.1038/s41567-025-03030-4","url":null,"abstract":"Bacterial second messenger networks transmit environmental information through both amplitude and frequency modulation strategies. However, the mechanisms by which cells decode frequency-encoded signals remain poorly understood. By reconstructing the cyclic adenosine monophosphate second messenger system in Pseudomonas aeruginosa, we demonstrate that frequency-to-amplitude signal conversion emerges through three distinct filtering modules that decode frequency-encoded signals into gene expression patterns. Our mathematical framework predicts a range of frequency filtering regimes controlled by a dimensionless threshold parameter. We validated these using synthetic circuits and an automated experimental platform. Quantitative analysis reveals that under the given parameter conditions, frequency modulation expands the accessible state space more substantially than amplitude modulation alone. The total number of accessible states scales as the square of the number of regulated genes for frequency-enhanced control, compared with the power of 0.8 for amplitude-only control. This results in approximately two additional bits of information entropy in three-gene systems when using frequency-based control. Our findings establish the fundamental principles of frequency-based signal processing in bacterial second messenger networks, revealing how cells exploit temporal dynamics to regulate multiple genes and expand accessible state spaces. This provides insights into both cellular information physics and design principles for synthetic biology.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"45 1","pages":""},"PeriodicalIF":19.6,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145059440","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

Boron at the boundaries 边界处的硼

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-09-12 DOI: 10.1038/s41567-025-03041-1

Richard Brierley

引用次数: 0

In plain sight 明目张胆

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-09-12 DOI: 10.1038/s41567-025-03021-5

Mark Buchanan

引用次数: 0

Parallelized telecom quantum networking with an ytterbium-171 atom array 利用镱-171原子阵列的并行电信量子网络

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2025-09-12 DOI: 10.1038/s41567-025-03022-4

Lintao Li, Xiye Hu, Zhubing Jia, William Huie, Won Kyu Calvin Sun, Aakash, Yuhao Dong, Narisak Hiri-O-Tuppa, Jacob P. Covey

{"title":"Parallelized telecom quantum networking with an ytterbium-171 atom array","authors":"Lintao Li, Xiye Hu, Zhubing Jia, William Huie, Won Kyu Calvin Sun, Aakash, Yuhao Dong, Narisak Hiri-O-Tuppa, Jacob P. Covey","doi":"10.1038/s41567-025-03022-4","DOIUrl":"https://doi.org/10.1038/s41567-025-03022-4","url":null,"abstract":"The integration of quantum computers and sensors into a quantum network enables new capabilities in quantum information science. Most networks with atom-like qubits operate at visible or near-ultraviolet wavelengths and require conversion to the telecom band for long-distance communication, which reduces efficiency and potentially introduces noise. Here we report high-fidelity entanglement between ytterbium-171 atoms and optical photons generated directly in the telecommunication band, where fibre loss is low. The nuclear spin of the atom is entangled with a single photon in the time-bin basis, yielding a high atom-measurement-corrected atom–photon Bell state fidelity. This can be further improved by addressing photon measurement errors. By imaging the atom array onto an optical fibre array, we also implement a parallelized networking protocol that can increase the remote entanglement rate proportionately with the number of channels. We also preserve coherence on a memory qubit during operations on communication qubits. These results support the integration of atomic systems into scalable quantum networks.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"41 1","pages":""},"PeriodicalIF":19.6,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145035384","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

Precision without parity 无奇偶校验精度

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-09-12 DOI: 10.1038/s41567-025-03018-0

Solmaz Nadiri

引用次数: 0

Serendipitous signal 偶然的信号

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-09-12 DOI: 10.1038/s41567-025-03052-y

引用次数: 0

Publisher Correction: Coherent control of magnon–polaritons using an exceptional point 出版者更正：使用特殊点的磁非极化子的相干控制

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2025-09-09 DOI: 10.1038/s41567-025-03055-9

N. J. Lambert, A. Schumer, J. J. Longdell, S. Rotter, H. G. L. Schwefel

引用次数: 0

Certifying almost all quantum states with few single-qubit measurements 用很少的单量子位测量来证明几乎所有的量子态

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2025-09-08 DOI: 10.1038/s41567-025-03025-1

Hsin-Yuan Huang, John Preskill, Mehdi Soleimanifar

{"title":"Certifying almost all quantum states with few single-qubit measurements","authors":"Hsin-Yuan Huang, John Preskill, Mehdi Soleimanifar","doi":"10.1038/s41567-025-03025-1","DOIUrl":"https://doi.org/10.1038/s41567-025-03025-1","url":null,"abstract":"Certifying that an n-qubit state synthesized in the laboratory is close to a given target state is a fundamental task in quantum information science. However, existing rigorous protocols applicable to general target states have potentially prohibitive resource requirements in the form of either deep quantum circuits or exponentially many single-qubit measurements. Here we prove that almost all n-qubit target states, including those with exponential circuit complexity, can be certified from only O(n2) single-qubit measurements. Given access to the target state’s amplitudes, our protocol requires only O(n3) classical computation. This result is established by a technique that relates certification to the mixing time of a random walk. Our protocol has applications for benchmarking quantum systems, for optimizing quantum circuits to generate a desired target state and for learning and verifying neural networks, tensor networks and various other representations of quantum states using only single-qubit measurements. We show that such verified representations can be used to efficiently predict highly non-local properties of a synthesized state that would otherwise require an exponential number of measurements on the state. We demonstrate these applications in numerical experiments with up to 120 qubits and observe an advantage over existing methods such as cross-entropy benchmarking.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"35 1","pages":""},"PeriodicalIF":19.6,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145009271","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