EPJ Quantum Technology最新文献

{"title":"Traversing Gaussian and non-Gaussian regimes in photonic quantum simulators: a review","authors":"Dennis Delali Kwesi Wayo,&nbsp;Rodrigo Alves Dias,&nbsp;Masoud Darvish Ganji,&nbsp;Camila Martins Saporetti,&nbsp;Leonardo Goliatt","doi":"10.1140/epjqt/s40507-026-00496-w","DOIUrl":"10.1140/epjqt/s40507-026-00496-w","url":null,"abstract":"<div><p>Quantum photonic simulators are pivotal for designing and analyzing quantum photonic circuits that utilize both continuous-variable (CV) and discrete-variable (DV) encodings. This review critically examines the transition from Gaussian to non-Gaussian photonic models and the computational overhead that emerges from simulating systems with more than 20 modes or photon numbers exceeding 10 per mode. Gaussian states; such as coherent and squeezed states, are modeled efficiently using first-moment vectors and covariance matrices of dimension <span>(2n times 2n)</span>, where <i>n</i> is the number of modes. Non-Gaussian elements like the cubic phase gate <span>(U = exp (i gamma hat{x}^{3}))</span> and photon-subtracted states demand full Fock space representations and scale exponentially with photon number <span>(d^{2})</span>, where <i>d</i> is the Hilbert space dimension. We analyze simulators including <span>Strawberry Fields</span>, <span>Piquasso</span>, and <span>Perceval</span>, benchmarking their support for tensor networks (bond dimension D &gt;100), GPU acceleration, thus NVIDIA A100 with 1555 GB/s bandwidth, and SoC implementations such as Edge TPU with 8 TFLOPS. Special focus is given to noise models such as photon loss with transmissivity <i>η</i>, thermal noise modeled with <span>(bar{n} = 1.5)</span>, and dark count Poisson distributions (<span>(lambda = 0.1)</span>). The review underscores scalable techniques and hybrid quantum-classical workflows vital for near-term photonic quantum computing.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"13 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjqt/s40507-026-00496-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrometry of extremely-low frequencies from kHz to sub-Hz with a Rydberg-atom sensor","authors":"Aveek Chandra,&nbsp;Narongrit Paensin,&nbsp;Rainer Dumke","doi":"10.1140/epjqt/s40507-026-00550-7","DOIUrl":"10.1140/epjqt/s40507-026-00550-7","url":null,"abstract":"<div><p>Rydberg-atom electric field sensing has shown great potential from near-DC to THz with state-of-the-art measurement metrics realized in sensitivity, phase extraction, multi-band receptivity, etc. While Rydberg-atom sensors have shown exceptional performance in the GHz regime, low-frequency operation has remained challenging because of electric-field-screening in conventional vapor cells, which suppresses externally applied fields. We overcome this limitation by combining auxiliary modulation and lock-in detection with a paraffin-coated vapor cell, and demonstrate an electrode-free, wideband method for sensing frequencies, ranging from 0.5 Hz to 10 kHz. Our work extends Rydberg-atom sensor’s range to VLF, ULF, SLF, ELF and sub-ELF frequency bands. In our method, high state-of-the-art sensitivities have been achieved - 819 <span>(mu text{V/cm}/sqrt{text{Hz}})</span> for 1 Hz, 33 <span>(mu text{V/cm}/sqrt{text{Hz}})</span> for 10 Hz, 10 <span>(mu text{V/cm}/sqrt{text{Hz}})</span> for 100 Hz and 2 <span>(mu text{V/cm}/sqrt{text{Hz}})</span> for 1 kHz.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"13 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjqt/s40507-026-00550-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148781958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Byzantine-repeater-aware mediated multi-party QKD in untrusted networks: a corrected-frame finite-key security framework via entropy accumulation","authors":"Hamza Sohail,&nbsp;Burhan Ul Islam Khan,&nbsp;Aabid A. Mir,&nbsp;Khang Wen Goh,&nbsp;Dwi Sudarno Putra,&nbsp;Mesith Chaimanee","doi":"10.1140/epjqt/s40507-026-00544-5","DOIUrl":"10.1140/epjqt/s40507-026-00544-5","url":null,"abstract":"<div><p>Mediated multi-party quantum key distribution (M-MQKD) is studied for repeater-assisted quantum networks with an untrusted repeater layer and end users restricted to single-qubit local operations and one-way quantum reception. Building on the 1D+star mediated construction, the repeater path is treated as an untrusted measurement layer and the security analysis adopts a corrected-frame GHZ model. Under authenticated timing windows, trusted user-side measurements, a calibrated Check observable, and an explicit public-reconciliation transcript, we establish a corrected-frame finite-key theorem yielding a conference-key length bound from two experimentally accessible statistics: Share-mode disagreement and Check-mode parity-violation. The virtual phase-error variable for privacy amplification is related to the corrected-frame Check parity observable by a stabilizer-complementarity argument with quantum side information, while the entropy term in entropy accumulation is replaced by a predeclared affine lower bound on <span>(1- h_{2} (x))</span>. Error-correction leakage is accounted for through a designated-leader pairwise reconciliation transcript, including syndrome traffic, verification tags, and auxiliary public messages. The protocol is hardened by announcement-consistency traps, salted commit-then-open commitments over modes and parameter-estimation outcomes, randomized reveal order, and authenticated timing windows. These mechanisms detect or exclude dishonest classical disclosures before parameter estimation and treat trap failures as an abort/detection statistic rather than an unproved entropy penalty. The framework gives an auditable finite-key extraction rule as a function of observed error rates, finite-sampling radii, reconciliation leakage, EAT finite-size penalties, trap thresholds, and commitment length. Numerical evaluation maps rate-security trade-offs and gives parameter-selection guidance, supporting resilient infrastructure for secure multi-party quantum communication.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"13 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjqt/s40507-026-00544-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148615032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modelling detector response for accurate calibration of single-photon detectors under pulsed single-photon illumination","authors":"Hristina Georgieva,&nbsp;Edouard Ivanov,&nbsp;Petr Stepanov,&nbsp;Marco López,&nbsp;Stefan Kück","doi":"10.1140/epjqt/s40507-026-00540-9","DOIUrl":"10.1140/epjqt/s40507-026-00540-9","url":null,"abstract":"<div><p>We present an empirical model describing the detection response of single-photon detectors under pulsed illumination from a single-photon source based on a quantum dot. The model does not rely on assumptions about the recovery dynamics, but incorporates measured recovery functions to predict the effective detection efficiency. This model was successfully validated through a calibration of a superconducting nanowire single-photon detector at photon fluxes of up to 19 million photons per second at a wavelength of 929 nm. Calibrations of three silicon single-photon avalanche detectors with different dead times revealed deviations from the model predictions, suggesting an unaccounted influence of the different electronic design on the detector performance. Owing to its flexibility, the proposed model enables accurate estimation of photon fluxes from single-photon emitters and provides a practical tool for evaluating loss budgets of each component and therefore of entire quantum optical systems, thereby improving the overall system performance.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"13 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjqt/s40507-026-00540-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148613997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Krylov complexity as a cryptographic resource: eavesdropper detection in quantum key distribution via operator-growth channel fingerprints","authors":"Daniel Süß","doi":"10.1140/epjqt/s40507-026-00541-8","DOIUrl":"10.1140/epjqt/s40507-026-00541-8","url":null,"abstract":"<div><p>I present a physical-layer monitoring framework for quantum key distribution (QKD) implementations based on Krylov/operator-growth diagnostics. Running alongside standard parameter estimation, privacy amplification, and composable security proofs, it addresses a focused question: whether the temporal correlation structure of an observed quantum bit error rate (QBER) stream carries additional information about physical channel perturbations. Within a specified local-Hamiltonian channel model, the Lanczos coefficients of the channel Liouvillian define an operator-growth autocorrelation template, and deviations from it serve as anomaly scores for implementation monitoring.</p><p>For the model studied here, the QBER autocorrelation relates to the operator autocorrelation through a proportionality relation, <span>(C_{mathrm{QBER}}(tau )=alpha (N)C_{mathrm{op}}(tau ))</span>, with <span>(alpha (N))</span> an explicitly specified calibration factor. Local Hamiltonian perturbations generically distort the associated Krylov fingerprint once the perturbation reaches the support of the monitored observable, consistent with the locality of the Lanczos recursion and with Lieb–Robinson bounds.</p><p>The resulting three-layer pipeline combines adaptive frequency filtering, Krylov-template extraction, and calibrated slope detection. On simulated BB84-like QBER data with realistic hardware noise, the detector achieves high anomaly discrimination under the tested perturbation classes (<span>(mathrm{AUC}=0.9899)</span>). On <span>(181{,}606)</span> public QBER measurements from a deployed fiber-optic QKD system, it yields a 4.5% clean-test alarm rate against a 5% design target and detects injected perturbations with 96.0% sensitivity at <span>(Delta mathrm{QBER}={+}0.5%)</span> (<span>(mathrm{AUC}=0.981)</span>). Certification of final key secrecy remains governed by the underlying QKD protocol, parameter estimation, finite-key analysis, and privacy amplification.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"13 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjqt/s40507-026-00541-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148613816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantum-assisted tomographic image refinement with limited qubits for high-resolution imaging","authors":"Hyunju Lee,&nbsp;Kyungtaek Jun","doi":"10.1140/epjqt/s40507-026-00545-4","DOIUrl":"10.1140/epjqt/s40507-026-00545-4","url":null,"abstract":"<div><p>We propose a quantum-assisted reconstruction framework for high-resolution tomographic imaging that reduces qubit/variable requirements by combining sinogram downsampling and region-wise iterative refinement. Previous quantum optimization–based CT reconstruction methods require solving QUBO (Quadratic Unconstrained Binary Optimization) problems over full-resolution image grids, which limits scalability under current hardware constraints. Our method addresses this by combining sinogram downscaling with region-wise iterative refinement, allowing reconstruction to begin from a reduced-resolution sinogram and image, and then to be progressively upscaled and optimized region by region.</p><p>Each region is independently transformed into a compact QUBO problem and solved via a D-Wave hybrid quantum-classical solver while keeping the surrounding image fixed. The framework supports both full-view and sparse-view sinograms and is compatible with diverse acquisition geometries, including parallel-beam, fan-beam, cone-beam, synchrotron tomography, and electron tomography (ET). Adaptive region selection (including overlapping or boundary-covering subregions) enables targeted refinement of residual-error under a limited qubit/variable budget.</p><p>Experimental validation on binary and integer-valued Shepp-Logan phantoms, together with an additional chest CT slice experiment, demonstrates accurate reconstructions under both dense-view and sparse-view angular sampling using reduced qubit/variable budgets. We observed that nearest-neighbor interpolation may cause edge artifacts that hinder convergence, which can be mitigated by smoother interpolation and Gaussian filtering. Sparse-view experiments indicate that the refinement pipeline can remain effective under angular undersampling in our discrete setting, suggesting potential relevance to low-dose imaging scenarios, while a dose–quality trade-off analysis is left for future work. These findings highlight the practicality of QUBO-based, quantum-assisted refinement for high-resolution tomographic reconstruction under current hardware constraints and provide a pathway for scaling as hybrid quantum optimization capabilities evolve.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"13 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjqt/s40507-026-00545-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantum network coding against pollution attacks based on quantum state sharing","authors":"Zhen-Zhen Li,&nbsp;Ming-Kui Liu,&nbsp;Bo Gao,&nbsp;Zi-Chen Li","doi":"10.1140/epjqt/s40507-026-00539-2","DOIUrl":"10.1140/epjqt/s40507-026-00539-2","url":null,"abstract":"<div><p>Quantum network coding (QNC) can encode and decode quantum information, thereby improving the communication efficiency. However, it is vulnerable to pollution attacks, which will lead to invalid transmission throughout the quantum network. Inspired by the idea of quantum state sharing (QSTS), we introduce QSTS into QNC for the first time to address security issues such as pollution attacks. Subsequently, a novel QNC scheme against pollution attacks based on QSTS is proposed in the paper. In the scheme, the first intermediate node encodes quantum states and performs the first round of sharing. Meanwhile, it conducts an XOR operation on the classical information. The second intermediate node encodes quantum states and performs the second round of sharing. Meanwhile, it duplicates the classical information. Different from the first one, it needs to distribute the quantum state to two receivers by means of quantum teleportation, measurement by using the designed basis, and unitary operations. Finally, the receiver performs the third round of sharing on the quantum state, then verifies the existence of pollution attacks by comparing the quantum information with the classical information. Through performance analysis, the proposed scheme can realize that receivers can receive the quantum state from senders with the fidelity of 1 and the success probability of 1 simultaneously. In addition, we also apply the scheme to the extended butterfly network, which demonstrates superior extensibility and practicability.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"13 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjqt/s40507-026-00539-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149132711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Implementation of high-fidelity two-qubit gates across separate superconducting quantum chips via a bus resonator","authors":"Shu-Ya Wang,&nbsp;Dong-Sheng Wang,&nbsp;Xiao-Han Yu,&nbsp;Bo Zhao,&nbsp;Wei-Long Wang,&nbsp;Hui-Hui Sun,&nbsp;Li-Xin Wang,&nbsp;Fu-Dong Liu,&nbsp;Xu-Yan Qi,&nbsp;Zheng Shan","doi":"10.1140/epjqt/s40507-026-00527-6","DOIUrl":"10.1140/epjqt/s40507-026-00527-6","url":null,"abstract":"<div><p>High-fidelity quantum interconnection remains a critical challenge for scaling up superconducting quantum chips. Here, we realize a simple fixed coupling scheme to achieve high-fidelity two-qubit gate operation across separate superconducting quantum chips. In this scheme, qubit-qubit coupling between separate chips can be realized via exchange interaction mediated by a bus resonator. By merely tuning the frequency of a single qubit, the resonant mode of the bus resonator can be modulated, enabling high-quality and stable quantum interconnection across different chips. Consequently, the experimentally implemented two-qubit gate operations between separate chips exhibit excellent performance, with a maximum two-qubit CZ gate fidelity reaching 99.57%. This work lays a technical foundation for the realization of high-fidelity chip-to-chip quantum interconnection, which facilitates the development of large-scale superconducting quantum chips with high fidelity.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"13 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjqt/s40507-026-00527-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148465220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flux-bias-free flux qubit driven by low-power single-flux-quantum driver on monolithically integrated circuit","authors":"Duong Pham,&nbsp;Tomoharu Ueda,&nbsp;Shigeyuki Miyajima,&nbsp;Hirotaka Terai,&nbsp;Kunihiro Inomata,&nbsp;Masamitsu Tanaka,&nbsp;Akira Fujimaki,&nbsp;Taro Yamashita","doi":"10.1140/epjqt/s40507-026-00538-3","DOIUrl":"10.1140/epjqt/s40507-026-00538-3","url":null,"abstract":"<div><p>Single-flux-quantum (SFQ) cryogenic control circuits are a promising approach for realizing scalable superconducting quantum processors. However, previous studies have primarily relied on conventional SFQ technologies with Josephson junction critical current densities (<span>(J_{mathrm{C}})</span>) of about 1 kA/cm² and critical currents (<span>(I_{mathrm{C}})</span>) of several hundred microamperes. Such large critical currents can increase power dissipation and induce nonequilibrium quasiparticles that degrade qubit performance. In this study, we demonstrate coherent control of a flux-bias-free (FBF) flux qubit using a low-power SFQ driver monolithically integrated on the same chip. The SFQ driver was fabricated using epitaxial NbN/AlN/NbN Josephson junctions with critical currents of only a few microamperes, approximately two orders of magnitude smaller than those used in conventional SFQ circuits. Using this low-<span>(I_{mathrm{C}})</span> SFQ driver, we found that the energy relaxation time, <span>(T_{1})</span>, of the FBF qubit remains comparable to that obtained under conventional microwave control, indicating that the low-<span>(I_{mathrm{C}})</span> SFQ driver does not introduce a measurable degradation of qubit performance in the present device.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"13 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjqt/s40507-026-00538-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149132758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantum dynamics in frustrated Ising fullerenes","authors":"Alejandro Lopez-Bezanilla,&nbsp;William Bernoudy,&nbsp;Kelly Boothby,&nbsp;Jack Raymond,&nbsp;Alberto Nocera,&nbsp;Andrew D. King","doi":"10.1140/epjqt/s40507-026-00536-5","DOIUrl":"10.1140/epjqt/s40507-026-00536-5","url":null,"abstract":"<div><p>The complex energy landscapes exhibited by frustrated magnetic systems undergoing quantum fluctuations are a challenge to accurately simulate, and thus of great interest for testing diverse qubit platforms in the field of quantum simulation. This study experimentally demonstrates quantum fluctuations lifting the degenerate ground-state manifold of classical magnetic configurations in fullerene Ising models with resonating dimers. The interplay between degeneracy and quantum fluctuations makes these boundary-free models well suited as a diagnostic test case for quantum simulators. Indeed, we observe significant performance improvement across generations of superconducting quantum annealers, showing the potential of highly symmetric, frustrated systems for assessing the precision of quantum-simulation technologies.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"13 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjqt/s40507-026-00536-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}