Advanced quantum technologies最新文献

{"title":"Simultaneous Photon and Phonon Lasing From Pumping Optomechanical Systems with a Two-Tone Field","authors":"Vitalie Eremeev,&nbsp;Hugo Molinares,&nbsp;Luis A. Correa,&nbsp;Bing He","doi":"10.1002/qute.202400497","DOIUrl":"https://doi.org/10.1002/qute.202400497","url":null,"abstract":"<p>Achieving simultaneous lasing of photons and phonons in optomechanical setups has great potential for applications in quantum information processing, high precision sensing and the design of hybrid photonic–phononic devices. Here, this possibility is explored with an optomechanical system driven by a two-tone field. Whenever the difference between the driving frequencies matches the associated mechanical frequency, the photon and phonon populations are found to achieve steady-state coherent oscillations, demonstrating a dual lasing phenomenon. Such drive–tone resonance condition can synchronize the phases of the photon and phonon fields, which facilitates a robust simultaneous lasing. Here, analytical insights into the joint amplification of the optical and mechanical modes are provided, and further confirm the dual lasing phenomenon by numerically calculating the relevant correlation functions and the power spectrum. This setup, consisting of a single optomechanical cavity, is simpler than previous realizations of dual lasing and provides a clean understanding of the underlying mechanisms. This work thus paves the way for the development of novel strategies for the optimisation of optomechanical interactions through tailored driving schemes.</p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 3","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143622717","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}

{"title":"Versatile Quadrature Antenna for Precise Control of Large Electron Spin Ensembles in Diamond","authors":"Ruben Pellicer-Guridi,&nbsp;Koen Custers,&nbsp;Joseba Solozabal-Aldalur,&nbsp;Alexey Brodolin,&nbsp;Jason T. Francis,&nbsp;Miguel Varga,&nbsp;Asier Mongelos,&nbsp;Jorge Casanova,&nbsp;Margarethus M. Paulides,&nbsp;Gabriel Molina-Terriza","doi":"10.1002/qute.202400142","DOIUrl":"https://doi.org/10.1002/qute.202400142","url":null,"abstract":"<p>An easily reproducible inexpensive microwave antenna that can generate a strong and homogeneous magnetic field of arbitrary polarization is presented, which enables fast and coherent control of electron spins over a large volume. Unlike preceding works, a resonant antenna with ample optical access and which maintains its resonant behavior regardless of the proximity of other experimental hardware components is presented. This robustness is crucial as it enables using microscope objectives with short working distances to perform wide-field imaging/sensing with bulk diamonds. The antenna generates a magnetic field strength of 22.3 A <span></span><math>\u0000 <semantics>\u0000 <msup>\u0000 <mi>m</mi>\u0000 <mrow>\u0000 <mo>−</mo>\u0000 <mn>1</mn>\u0000 </mrow>\u0000 </msup>\u0000 <annotation>${rm m}^{-1}$</annotation>\u0000 </semantics></math> for 1 W total driving power, which doubles the power efficiency compared with previously reported patch antenna designs. The magnetic field homogeneity in a volume of <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mn>0.3</mn>\u0000 <msup>\u0000 <mtext>mm</mtext>\u0000 <mn>3</mn>\u0000 </msup>\u0000 </mrow>\u0000 <annotation>$0.3text{mm}^3$</annotation>\u0000 </semantics></math>, <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mn>0.6</mn>\u0000 <msup>\u0000 <mtext>mm</mtext>\u0000 <mn>3</mn>\u0000 </msup>\u0000 </mrow>\u0000 <annotation>$0.6text{mm}^3$</annotation>\u0000 </semantics></math> and <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mn>1</mn>\u0000 <msup>\u0000 <mtext>mm</mtext>\u0000 <mn>3</mn>\u0000 </msup>\u0000 </mrow>\u0000 <annotation>$1text{mm}^3$</annotation>\u0000 </semantics></math> is within 3%, 8% and 14%, respectively. The antenna can be driven off-resonance without affecting the ellipticity and inhomogeneity of the field, and has a full-width-at-half-maximum bandwidth of <span></span><math>\u0000 <semantics>\u0000 <mo>∼</mo>\u0000 <annotation>$sim$</annotation>\u0000 </semantics></math>200 MHz. Its resonant frequency can be tuned over a 400 MHz range via varactors. The PCB files are provided open-source. This work facilitates a robust and versatile piece of instrumentation, being particularly appealing for applications such as high sensitivity magnetometry and wide-field imaging/sensing with nitrogen-vacancy centers.</p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 3","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/qute.202400142","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143622713","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":"Sensing Applications of PT-Symmetry in Non-Hermitian Photonic Systems","authors":"Zuoxian Wang,&nbsp;Zihua Liang,&nbsp;Jinsheng Hu,&nbsp;Peng Zhou,&nbsp;Lu Liu,&nbsp;Gen Hu,&nbsp;Weiyi Wang,&nbsp;Mao Ye","doi":"10.1002/qute.202400349","DOIUrl":"https://doi.org/10.1002/qute.202400349","url":null,"abstract":"<p>In recent years, rapid advances in non-Hermitian physics and PT-symmetry have brought new opportunities for ultra-sensitive sensing. Especially the presence of controllable non-conservative processes in optical and photonic systems has triggered the development of singularity-based sensing. By flexibly tuning gain, loss, and coupling strength, a series of high-resolution sensing approaches can be realized, with the potential of on-chip integration. Another important non-Hermitian singularity is the coherent perfect absorption-lasing (CPAL) point in the PT-broken phase, which manifests the coexistence of lasing and CPA, exhibiting intriguing properties with considerable sensing potential. As a crucial method for quantum sensing and metrology, the interaction between light and alkali-metal atomic ensembles promises unprecedented sensitivity in the measurement of ultra-weak magnetic field, inertia, and time. Therefore, extending the study of PT-symmetry and singularity-based sensing from conventional solid-state wave systems to diffusive systems such as atomic ensembles is attracting wide attention. In this review, the development of singularity-based sensing in PT/anti-PT symmetric non-Hermitian systems is summarized, with a special focus on photonic platforms including integration with waveguides, microcavities, metasurface, etc. In addition, sensing applications with discussion further extended to atomic ensembles, projecting future research trends in the field.</p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 1","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143119729","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}

{"title":"Quantum Fourier Transformation Using Quantum Reservoir Computing Network","authors":"Lu-Fan Zhang,&nbsp;Lu Liu,&nbsp;Xing-yu Wu,&nbsp;Chuan Wang","doi":"10.1002/qute.202400396","DOIUrl":"https://doi.org/10.1002/qute.202400396","url":null,"abstract":"<p>Combining the benefits of quantum computing and artificial neural networks, quantum reservoir computing shows potential for handling complex tasks due to its access to the Hilbert space in exponential dimensions. In this study, the quantum Fourier transform algorithm is implemented utilizing quantum reservoir computing, demonstrating its unique advantages. For the random interactions within the reservoirs, quantum reservoir computing avoids the cost of precise control of the physical system. The proposed model only requires to optimize a linear readout layer, thus significantly reducing the computational cost required for training. The accuracy of the implementation is numerically demonstrated and the model is integrated into quantum circuits to correctly execute the quantum phase estimation algorithm. Additionally, the impacts of different reservoir structures and dissipation intensities within the reservoir, and the results indicate the robustness of the model are discussed.</p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 3","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143622650","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}

{"title":"Inside Front Cover: Nonlocality Enhanced Precision in Quantum Polarimetry via Entangled Photons (Adv. Quantum Technol. 11/2024)","authors":"Ali Pedram,&nbsp;Vira R. Besaga,&nbsp;Frank Setzpfandt,&nbsp;Özgür E. Müstecaplıoğlu","doi":"10.1002/qute.202470032","DOIUrl":"https://doi.org/10.1002/qute.202470032","url":null,"abstract":"<p>A quantum polarimetry method using entangled photons to improve measurement precision is introduced in article number 2400059 by Ali Pedram, Vira R. Besaga, Frank Setzpfandt, and Özgür E. Müstecaplıoğlu. By calculating precision bounds and estimating the rotation angle of optical elements, both theoretically and experimentally, it is shown that the capability of entanglement to enhance accuracy is diminished with noise. Experimental noise induces bias in estimators, reducing accuracy and precision depending on chosen estimators and noise channels.\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":"7 11","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/qute.202470032","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142642061","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: Positional Accuracy of 3D Printed Quantum Emitter Fiber Couplers (Adv. Quantum Technol. 11/2024)","authors":"Ksenia Weber,&nbsp;Simon Thiele,&nbsp;Mario Hentschel,&nbsp;Alois Herkommer,&nbsp;Harald Giessen","doi":"10.1002/qute.202470031","DOIUrl":"https://doi.org/10.1002/qute.202470031","url":null,"abstract":"<p>The cover image depicts coupling of the light emission of single quantum emitters to single mode fibers. 3D printed microoptics are used to create the aspheric optics that matches the numerical apertures of light emission cone and fibers to each other. Additionally, a 3D printed chuck is used to place the fiber in the correct distance and with the correct horizontal alignment over the quantum emitters. The article by Harald Giessen and co-workers (article number 2400135) describes the quantification of the alignment accuracy and reproducibility of such 3D printed couplers. [Cover image: © Florian Sterl, Sterltech Optics.]\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":"7 11","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/qute.202470031","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142642060","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: Analysis for Satellite-Based High-Dimensional Extended B92 and High-Dimensional BB84 Quantum Key Distribution (Adv. Quantum Technol. 11/2024)","authors":"Arindam Dutta,&nbsp; Muskan,&nbsp;Subhashish Banerjee,&nbsp;Anirban Pathak","doi":"10.1002/qute.202470033","DOIUrl":"https://doi.org/10.1002/qute.202470033","url":null,"abstract":"<p>In article number 2400149, Arindam Dutta and co-workers study the implementation of high-dimensional quantum key distribution protocols, HD-Ext-B92 and HD-BB84, via satellite. The study modifies key rate calculations to explore variations in key rate, probability distribution, and quantum bit error rate (QBER) with respect to dimension and noise. The research examines how the average key rate changes with zenith angle and link length under different weather conditions, showing HD-BB84's superior performance in higher dimensions despite higher QBER saturation. The down-link configuration is shown to be preferable over the up-link configuration.\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":"7 11","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/qute.202470033","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142642062","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":"Issue Information (Adv. Quantum Technol. 11/2024)","authors":"","doi":"10.1002/qute.202470034","DOIUrl":"https://doi.org/10.1002/qute.202470034","url":null,"abstract":"","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"7 11","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/qute.202470034","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142642059","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":"Mechanical Dynamics Around Higher-Order Exceptional Point in Magno-Optomechanics","authors":"Wen-Di He,&nbsp;Xiao-Hong Fan,&nbsp;Ming-Yue Liu,&nbsp;Guo-Qiang Zhang,&nbsp;Hai-Chao Li,&nbsp;Wei Xiong","doi":"10.1002/qute.202400275","DOIUrl":"https://doi.org/10.1002/qute.202400275","url":null,"abstract":"<p>Diverse exceptional points (EPs) are theoretically studied in an experimentally feasible magno-optomechanics consisting of an optomechanical subsystem coupled to a magnomechanical subsystem via physically direct contact. By adiabatically eliminating both the cavity and the Kittel mode, dissipative and parity-time symmetric exceptional points can be observed. When only the cavity mode is eliminated, a second (third)-order pseudo-Hermitian EP emerges for nondegenerate (degenerate) mechanical modes. The distinct dynamical behavior of two mechanical modes around these EPs are further studied. The proposal provides a promising way to engineer diverse EPs and quantify non-Hermitian phase transition with exceptional dynamical behavior in magno-optomechanics.</p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 3","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143622612","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}

{"title":"Multidimensional Quantum Generative Modeling by Quantum Hartley Transform","authors":"Hsin-Yu Wu,&nbsp;Vincent E. Elfving,&nbsp;Oleksandr Kyriienko","doi":"10.1002/qute.202400337","DOIUrl":"https://doi.org/10.1002/qute.202400337","url":null,"abstract":"<p>An approach for building quantum models based on the exponentially growing orthonormal basis of Hartley kernel functions is developed. First, a differentiable Hartley feature map parameterized by real-valued argument that enables quantum models suitable for solving stochastic differential equations and regression problems is designed. Unlike the naturally complex Fourier encoding, the proposed Hartley feature map circuit leads to quantum states with real-valued amplitudes, introducing an inductive bias and natural regularization. Next, a quantum Hartley transform circuit is proposed as a map between computational and Hartley basis. The developed paradigm is applied to generative modeling from solutions of stochastic differential equations, and utilize the quantum Hartley transform for fine sampling from parameterized distributions through an extended register. Finally, the capability of multivariate quantum generative modeling is demonstrated for both correlated and uncorrelated distributions. As a result, the developed quantum Hartley-based generative models (QHGMs) offer a distinct quantum approach to generative AI at increasing scale.</p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 3","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/qute.202400337","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143622656","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}