Quantum Science and Technology最新文献_第3页

Hybrid interfaces at the single quantum level in fluorescent molecules 荧光分子中单量子水平的混合界面

IF 6.7 2区物理与天体物理

Quantum Science and Technology Pub Date : 2025-09-29 DOI: 10.1088/2058-9565/ae0960

Daniele De Bernardis, Hugo Levy-Falk, Elena Fanella, Rocco Duquennoy, Valerio Digiorgio, Giacomo Scalari, Maja Colautti and Costanza Toninelli

{"title":"Hybrid interfaces at the single quantum level in fluorescent molecules","authors":"Daniele De Bernardis, Hugo Levy-Falk, Elena Fanella, Rocco Duquennoy, Valerio Digiorgio, Giacomo Scalari, Maja Colautti and Costanza Toninelli","doi":"10.1088/2058-9565/ae0960","DOIUrl":"https://doi.org/10.1088/2058-9565/ae0960","url":null,"abstract":"We theoretically investigate a single fluorescent molecule as a hybrid quantum optical device, in which multiple external laser sources exert control of the vibronic states. In the high-saturation regime, a coherent interaction is established between the vibrational and electronic degrees of freedom, and molecules can simulate several cavity QED models, whereby a specific vibrational mode plays the role of the cavity mode. Focusing on the specific example where the system is turned into an analogue simulator of the quantum Rabi model, the steady state exhibits vibrational bi-modality resulting in a statistical mixture of highly non-classical vibronic cat states. Applying our paradigm to molecules with prominent spatial asymmetry and combining an optical excitation with a THz(IR) driving, the system can be turned into a single photon transducer. Two possible implementations are discussed based on the coupling to a subwavelength THz patch antenna or a resonant metamaterial. In a nutshell, this work assesses the role of molecules as an optomechanical quantum toolbox for creating hybrid entangled states of electrons, photons, and vibrations, hence enabling frequency conversion over very different energy scales.","PeriodicalId":20821,"journal":{"name":"Quantum Science and Technology","volume":"28 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145188512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Quantifying complexity of continuous-variable quantum states via Wehrl entropy and Fisher information 利用Wehrl熵和Fisher信息量化连续变量量子态的复杂性

IF 6.7 2区物理与天体物理

Quantum Science and Technology Pub Date : 2025-09-28 DOI: 10.1088/2058-9565/ae08df

Siting Tang, Francesco Albarelli, Yue Zhang, Shunlong Luo and Matteo G A Paris

引用次数: 0

Quantum algorithm for vibronic dynamics: case study on singlet fission solar cell design 振动动力学的量子算法：单线态裂变太阳能电池设计案例研究

IF 6.7 2区物理与天体物理

Quantum Science and Technology Pub Date : 2025-09-28 DOI: 10.1088/2058-9565/ae0828

Danial Motlagh, Robert A Lang, Paarth Jain, Jorge A Campos-Gonzalez-Angulo, William Maxwell, Tao Zeng, Alan Aspuru-Guzik and Juan Miguel Arrazola

{"title":"Quantum algorithm for vibronic dynamics: case study on singlet fission solar cell design","authors":"Danial Motlagh, Robert A Lang, Paarth Jain, Jorge A Campos-Gonzalez-Angulo, William Maxwell, Tao Zeng, Alan Aspuru-Guzik and Juan Miguel Arrazola","doi":"10.1088/2058-9565/ae0828","DOIUrl":"https://doi.org/10.1088/2058-9565/ae0828","url":null,"abstract":"Vibronic interactions between nuclear motion and electronic states are critical for the accurate modeling of photochemistry. However, accurate simulations of fully quantum non-adiabatic dynamics are often prohibitively expensive for classical methods beyond small systems. In this work, we present a quantum algorithm based on product formulas for simulating time evolution under a general vibronic Hamiltonian in real space, capable of handling an arbitrary number of electronic states and vibrational modes. We develop the first trotterization scheme for vibronic Hamiltonians beyond two electronic states and introduce an array of optimization techniques for the exponentiation of each fragment in the product formula, resulting in a remarkably low cost of implementation. To demonstrate practical relevance, we outline a proof-of-principle integration of our algorithm into a materials discovery pipeline for designing more efficient singlet fission-based organic solar cells. We estimate that 100 fs of propagation using a second-order Trotter product formula for a 6-state, 21-mode model of exciton transport at an anthracene dimer requires 154 qubits and 2.76 × 106 Toffoli gates. While a 4-state, 246-mode model describing charge transfer at an anthracene-fullerene interface requires 1053 qubits and 2.66 × 107 Toffoli gates.","PeriodicalId":20821,"journal":{"name":"Quantum Science and Technology","volume":"20 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145182799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Noise-aware entanglement generation protocols for superconducting qubits with impedance-matched FBAR transducers 阻抗匹配FBAR换能器超导量子比特的噪声感知纠缠产生协议

IF 6.7 2区物理与天体物理

Quantum Science and Technology Pub Date : 2025-09-28 DOI: 10.1088/2058-9565/ae08e0

Erin Sheridan, Michael Senatore, Samuel Schwab, Eric Aspling, Taylor Wagner, James Schneeloch, Stephen McCoy, Daniel Campbell, David Hucul, Zachary Smith and Matthew D LaHaye

{"title":"Noise-aware entanglement generation protocols for superconducting qubits with impedance-matched FBAR transducers","authors":"Erin Sheridan, Michael Senatore, Samuel Schwab, Eric Aspling, Taylor Wagner, James Schneeloch, Stephen McCoy, Daniel Campbell, David Hucul, Zachary Smith and Matthew D LaHaye","doi":"10.1088/2058-9565/ae08e0","DOIUrl":"https://doi.org/10.1088/2058-9565/ae08e0","url":null,"abstract":"Connecting superconducting quantum processors to telecommunications-wavelength quantum networks is critically necessary to enable distributed quantum computing, secure communications, and other applications. Optically-mediated entanglement heralding protocols offer a near-term solution that can succeed with imperfect components, including sub-unity efficiency microwave-optical quantum transducers. The viability and performance of these protocols relies heavily on the properties of the transducers used: the conversion efficiency, resonator lifetimes, and added noise in the transducer directly influence the achievable entanglement generation rate and fidelity of an entanglement generation protocol. Here, we use an extended Butterworth–van Dyke (BVD) model to optimize the conversion efficiency and added noise of a Thin film bulk acoustic resonator (FBAR) piezo-optomechanical transducer. We use the outputs from this model to calculate the fidelity of one-photon and two-photon entanglement heralding protocols in a variety of operating regimes. For transducers with matching circuits designed to either minimize the added noise or maximize conversion efficiency, we theoretically estimate that entanglement generation rates of greater than can be achieved at moderate pump powers with fidelities of . This is the first time a BVD equivalent circuit model is used to both optimize the performance of an FBAR transducer and to directly inform the design and implementation of an entanglement generation protocol. These results can be applied in the near term to realize quantum networks of superconducting qubits with realistic experimental parameters.","PeriodicalId":20821,"journal":{"name":"Quantum Science and Technology","volume":"106 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145182757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Strategies for generating separable photon triplets in waveguides and ring resonators 在波导和环形谐振器中产生可分离光子三重体的策略

IF 6.7 2区物理与天体物理

Quantum Science and Technology Pub Date : 2025-09-25 DOI: 10.1088/2058-9565/ae0759

Gisell Lorena Osorio, Milica Banić and Nicolás Quesada

引用次数: 0

Generic two-mode Gaussian states as quantum sensors 通用双模高斯态作为量子传感器

IF 6.7 2区物理与天体物理

Quantum Science and Technology Pub Date : 2025-09-24 DOI: 10.1088/2058-9565/ae03e8

Pritam Chattopadhyay, Saikat Sur and Jonas F G Santos

引用次数: 0

Security analysis of ensemble-based quantum token protocol under advanced attacks 高级攻击下基于集成的量子令牌协议的安全性分析

IF 6.7 2区物理与天体物理

Quantum Science and Technology Pub Date : 2025-09-23 DOI: 10.1088/2058-9565/ae03e7

Bernd Bauerhenne, Lucas Tsunaki, Jan Thieme, Boris Naydenov and Kilian Singer

引用次数: 0

Ensemble-based quantum token protocol benchmarked on IBM quantum processors 基于集成的量子令牌协议在IBM量子处理器上进行基准测试

IF 6.7 2区物理与天体物理

Quantum Science and Technology Pub Date : 2025-09-23 DOI: 10.1088/2058-9565/ae03e6

Lucas Tsunaki, Bernd Bauerhenne, Malwin Xibraku, Martin E Garcia, Kilian Singer and Boris Naydenov

{"title":"Ensemble-based quantum token protocol benchmarked on IBM quantum processors","authors":"Lucas Tsunaki, Bernd Bauerhenne, Malwin Xibraku, Martin E Garcia, Kilian Singer and Boris Naydenov","doi":"10.1088/2058-9565/ae03e6","DOIUrl":"https://doi.org/10.1088/2058-9565/ae03e6","url":null,"abstract":"Quantum tokens envision to store unclonable quantum states in a physical device, with the goal of being used for personal authentication protocols, as required by banks. Still, the experimental realization of such devices faces many technical challenges, which can be partially mitigated using ensembles instead of single qubits. In this work, we thus propose an ensemble-based quantum token protocol, describing it through a simple yet general model based on a quantum mechanical observable. The protocol is benchmarked on five IBM quantum processors and a general hacker attack scenario is analyzed, in which the attacker attempts to read the bank token and forge a fake one, based on the information gained from this measurement. We experimentally demonstrate that the probability that the bank erroneously accepts a forged coin composed of multiple tokens can reach values below 10−22, while the probability that the bank accepts its own coin is above 0.999. The overall security of the protocol is therefore demonstrated within a hardware-agnostic framework, confirming the practical viability of the protocol in arbitrary quantum systems and thus paving the way for future applications with different ensembles of qubits, such as color center defects in solids.","PeriodicalId":20821,"journal":{"name":"Quantum Science and Technology","volume":"84 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145127578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Compressed-sensing Lindbladian quantum tomography with trapped ions 捕获离子的压缩传感Lindbladian量子层析成像

IF 6.7 2区物理与天体物理

Quantum Science and Technology Pub Date : 2025-09-22 DOI: 10.1088/2058-9565/ae0363

Dmitrii Dobrynin, Lorenzo Cardarelli, Markus Müller and Alejandro Bermudez

{"title":"Compressed-sensing Lindbladian quantum tomography with trapped ions","authors":"Dmitrii Dobrynin, Lorenzo Cardarelli, Markus Müller and Alejandro Bermudez","doi":"10.1088/2058-9565/ae0363","DOIUrl":"https://doi.org/10.1088/2058-9565/ae0363","url":null,"abstract":"Characterizing the dynamics of quantum systems is a central task for the development of quantum information processors (QIPs). It serves to benchmark different devices, learn about their specific noise, and plan the next hardware upgrades. However, this task is also very challenging, for it requires a large number of measurements and time-consuming classical processing. Moreover, when interested in the time dependence of the noise, there is an additional overhead since the characterization must be performed repeatedly within the time interval of interest. To overcome this limitation while, at the same time, ordering the learned sources of noise by their relevance, we focus on the inference of the dynamical generators of the noisy dynamics using Lindbladian quantum tomography (LQT). We propose two different improvements of LQT that alleviate previous shortcomings. In the weak-noise regime of current QIPs, we manage to linearize the maximum likelihood estimation of LQT, turning the constrained optimization into a convex problem to reduce the classical computation cost and to improve its robustness. Moreover, by introducing compressed sensing techniques, we reduce the number of required measurements without sacrificing accuracy. To illustrate these improvements, we apply our LQT tools to trapped-ion experiments of single- and two-qubit gates, advancing in this way the previous state of the art.","PeriodicalId":20821,"journal":{"name":"Quantum Science and Technology","volume":"28 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Suppressing quantum errors by noise-aware circuit design 噪声感知电路设计抑制量子误差

IF 6.7 2区物理与天体物理

Quantum Science and Technology Pub Date : 2025-09-21 DOI: 10.1088/2058-9565/ae05c4

Yi Hu, Congcong Zheng, Xiaojun Wang, Fanxu Meng, Xutao Yu and Zaichen Zhang

{"title":"Suppressing quantum errors by noise-aware circuit design","authors":"Yi Hu, Congcong Zheng, Xiaojun Wang, Fanxu Meng, Xutao Yu and Zaichen Zhang","doi":"10.1088/2058-9565/ae05c4","DOIUrl":"https://doi.org/10.1088/2058-9565/ae05c4","url":null,"abstract":"Suppressing errors is one of the central challenges in achieving reliable quantum computation on near-term hardware. While much attention has been paid to error correction and mitigation, we identify quantum circuit structure itself as a powerful lever for proactive error suppression. In this work, we present a unified and hardware-adaptive framework for noise-aware quantum circuit design, in which circuit topology and parameters are co-optimized from the ground up based on the noise profile of the target backend. Our framework supports a wide range of quantum tasks-including circuit compilation, quantum state preparation, and unitary approximation-under a consistent optimization paradigm. Extensive experiments on five IBM backends confirm the effectiveness of our method, showing significant fidelity gains across all tasks under realistic noise. These results demonstrate that noise suppression through structure-aware design offers a powerful and generalizable strategy for enhancing circuit performance on NISQ hardware. Our framework bridges low-level hardware constraints with high-level circuit synthesis, paving the way for more robust and efficient quantum programming in the presence of noise.","PeriodicalId":20821,"journal":{"name":"Quantum Science and Technology","volume":"22 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145103589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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