{"title":"Inside Front Cover: Nonlinear Effect Analysis and Sensitivity Improvement in Spin Exchange Relaxation Free Atomic Magnetometers (Adv. Quantum Technol. 10/2024)","authors":"Bozheng Xing, Ning Ma, Haoran Lv, Jixi Lu","doi":"10.1002/qute.202470028","DOIUrl":"https://doi.org/10.1002/qute.202470028","url":null,"abstract":"<p>Nonlinear effect, which is induced by probe lightatom ensemble interaction, can significantly influence the performance of atomic magnetometers. The cover image shows the nonlinear interaction process between linear-polarized light and atomic ensemble operated in the spin-exchange relaxation-free regime. In article number 2400226, Jixi Lu, Bozheng Xing, and co-workers first propose that the nonlinear effect could be effectively suppressed by optimizing saturation parameters, which causes significant improvement in probe sensitivity of the atomic magnetometer.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/qute.202470028","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142429935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Roman V. Zakharov, Olga V. Tikhonova, Nikolay V. Klenov, Igor I. Soloviev, Vladimir N. Antonov, Dmitry S. Yakovlev
{"title":"Front Cover: Solid-State Qubit as an On-Chip Controller for Non-Classical Field States (Adv. Quantum Technol. 10/2024)","authors":"Roman V. Zakharov, Olga V. Tikhonova, Nikolay V. Klenov, Igor I. Soloviev, Vladimir N. Antonov, Dmitry S. Yakovlev","doi":"10.1002/qute.202470027","DOIUrl":"https://doi.org/10.1002/qute.202470027","url":null,"abstract":"<p>Current research in quantum matter is strongly focused on quantum computing, communication and the quantum internet. The cover shows an artist's impression of the non-classical Fock state field in a single-mode resonator (red) operating at one frequency being directed to the input of a qubit controller (middle part) and subsequently converted to the desired non-classical (e.g. N00N state) field (green) in an output single-mode resonator operating at another frequency. The results described by Dmitry Yakovlev and co-workers in article number 2400141 open up exciting new possibilities for the quantum connection between solid-state and photonic flying qubits, enabling all-quantum data processing and data transfer.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/qute.202470027","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142429934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Back Cover: Universal Quantum Fisher Information and Simultaneous Occurrence of Landau-Class and Topological-Class Transitions in Non-Hermitian Jaynes-Cummings Models (Adv. Quantum Technol. 10/2024)","authors":"Zu-Jian Ying","doi":"10.1002/qute.202470029","DOIUrl":"https://doi.org/10.1002/qute.202470029","url":null,"abstract":"<p>Light–matter interaction can bridge critical phenomena, topological transitions, quantum metrology, and non-Hermitian physics, bringing novel implications. In non-Hermitian Jaynes–Cummings models with PT and anti-PT symmetries, the quantum Fisher information manifests criticality and super-universality around exceptional points (as shown in article number 2400288 by Zu-Jian Ying), providing a universally high sensitivity resource for quantum metrology. The simultaneous occurrence of conventionally incompatible critical Landau-class transition and topological transition is realized, with conceptional renovation and more potential in designing quantum sensors.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/qute.202470029","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142429933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Front Cover: Superconducting Diode Effect in a Constricted Nanowire (Adv. Quantum Technol. 9/2024)","authors":"Xiaofu Zhang, Qingchang Huan, Ruoyan Ma, Xingyu Zhang, Jia Huang, Xiaoyu Liu, Wei Peng, Hao Li, Zhen Wang, Xiaoming Xie, Lixing You","doi":"10.1002/qute.202470023","DOIUrl":"https://doi.org/10.1002/qute.202470023","url":null,"abstract":"<p>Superconducting diodes with nonreciprocal transport effect enable constructing novel logic devices, thereby laying the cornerstone of contemporary integrated circuits technology beyond Josephson junction-based circuits. Xiaofu Zhang, Lixing You, and co-workers designed and fabricated novel superconducting diodes based on the minimal superconducting electrical component – the superconducting nanowire –, which can rectify both square-wave and sine-wave signals without distortion (see article number 2300378). The superconducting nanowire diodes are irrespective of specific superconducting materials, and therefore promising for constructing low-dissipation superconducting integrated circuits for novel computation architectures.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/qute.202470023","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142170095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Inside Front Cover: Compact and Stable Diamond Quantum Sensors for Wide Applications (Adv. Quantum Technol. 9/2024)","authors":"Yuta Kainuma, Yuji Hatano, Takayuki Shibata, Naota Sekiguchi, Akimichi Nakazono, Hiromitsu Kato, Shinobu Onoda, Takeshi Ohshima, Mutsuko Hatano, Takayuki Iwasaki","doi":"10.1002/qute.202470024","DOIUrl":"https://doi.org/10.1002/qute.202470024","url":null,"abstract":"<p>A diamond quantum sensor, based on an ensemble of nitrogen-vacancy (NV) centers in diamond, is depicted being held by the author's hand. This sensor module is compact, highly magnetically sensitive, and stable. It was achieved by mounting a <sup>12</sup>C-enriched chemical vapor deposition diamond, optics for high collection efficiency of NV fluorescence, and a balancing circuit to cancel out laser noise in the sensor module. This compact module is expected to be versatile across a broad spectrum of applications. For further information on the device and its applications, see article number 2300456 by Yuta Kainuma, Takayuki Iwasaki, and co-workers.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/qute.202470024","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142170162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lü Xiang, He Wang, Zi-Meng Li, Zhu-Cheng Zhang, Yi-Ping Wang
{"title":"Back Cover: Triggering and Modulation of Quantum Magnon-Photon Hall Insulator in a 1D Cavity Magnonics Lattice (Adv. Quantum Technol. 9/2024)","authors":"Lü Xiang, He Wang, Zi-Meng Li, Zhu-Cheng Zhang, Yi-Ping Wang","doi":"10.1002/qute.202470026","DOIUrl":"https://doi.org/10.1002/qute.202470026","url":null,"abstract":"<p>In article number 2400111, Zhu-Cheng Zhang, Yi-Ping Wang, and co-workers propose a scheme for implementing a one-dimensional cavity magnonics lattice that exhibits quantum magnon–photon Hall insulator behaviors. By adjusting corresponding parameters, different energy spectrum structures can be triggered, and the flipping of edge states can be observed, enabling multi-channel topological quantum state transmission.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/qute.202470026","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142170163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hongxiang Shen, Yuxing He, Zeyu Han, Zongyuan Li, Wenhui Luo, Lan Cheng, Yanyi Luo, Bo Jing, Nobuyuki Yoshikawa
{"title":"Front Cover: Generating Microwave Signals with Enhancive Amplitudes Using Superconductor Single Flux Quantum Pulses for Controlling Quantum Bit (Adv. Quantum Technol. 8/2024)","authors":"Hongxiang Shen, Yuxing He, Zeyu Han, Zongyuan Li, Wenhui Luo, Lan Cheng, Yanyi Luo, Bo Jing, Nobuyuki Yoshikawa","doi":"10.1002/qute.202470020","DOIUrl":"https://doi.org/10.1002/qute.202470020","url":null,"abstract":"<p>This cover image illustrates the generation of microwave waveforms for qubit control by transforming superconducting single-flux-quantum (SFQ) pulses through a filtering network. The output microwave can be modulated by managing the condition of an SFQ pulse pair. Specifically, the reverse-polarity pulse-pair (RPPP) method enables maximum output amplitude and precise control over the initial phase of the microwave. This approach facilitates on-chip qubit control in a cryogenic environment, significantly reducing thermal noise and interconnecting cables, which is crucial for large-scale quantum computing. For further details see article number 2400001 by Hongxiang Shen, Yuxing He, Nobuyuki Yoshikawa, and co-workers.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/qute.202470020","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141986109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Back Cover: Nonreciprocal Unconventional Photon Blockade with Kerr Magnons (Adv. Quantum Technol. 8/2024)","authors":"Xiao-Hong Fan, Yi-Ning Zhang, Jun-Po Yu, Ming-Yue Liu, Wen-Di He, Hai-Chao Li, Wei Xiong","doi":"10.1002/qute.202470022","DOIUrl":"https://doi.org/10.1002/qute.202470022","url":null,"abstract":"<p>In article number 2400043, Hai-Chao Li, Wei Xiong, and co-workers first propose to achieve nonreciprocal unconventional photon blockade with Kerr magnons. By tuning the direction of the biased magnetic field, the Kerr coefficient can be opposite, giving rise to nonreciprocity. With such a nonreciprocal nonlinearity, direction-dependent unconventional photon blockade, destructively interfering between two transition paths, can be realized in single- and two-sphere cavity–magnon systems. By tuning magnon–photon coupling, reciprocal and nonreciprocal photon blockade can be arbitrarily switched for two-sphere setup. This study offers a potential platform for investigating nonreciprocal photon blockade effect with Kerr magnons.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/qute.202470022","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141985997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}