Quantum Science and Technology最新文献

A simple quantum simulation algorithm with near-optimal precision scaling 一个简单的量子模拟算法，具有接近最优的精度缩放

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/ae075a

Amir Kalev and Itay Hen

引用次数: 0

Molecular docking via weighted subgraph isomorphism on quantum annealers 量子退火上基于加权子图同构的分子对接

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/ae0890

Emanuele Triuzzi, Riccardo Mengoni, Francesco Micucci, Domenico Bonanni, Daniele Ottaviani, Andrea Rosario Beccari and Gianluca Palermo

引用次数: 0

Universal dissipators for driven open quantum systems and the correction to linear response 驱动开放量子系统的通用耗散及对线性响应的修正

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/ae0827

Lorenzo Bernazzani, Balázs Gulácsi and Guido Burkard

{"title":"Universal dissipators for driven open quantum systems and the correction to linear response","authors":"Lorenzo Bernazzani, Balázs Gulácsi and Guido Burkard","doi":"10.1088/2058-9565/ae0827","DOIUrl":"https://doi.org/10.1088/2058-9565/ae0827","url":null,"abstract":"We investigate in parallel two common pictures used to describe quantum systems interacting with their surrounding environment, i.e. the stochastic Hamiltonian description, where the environment is implicitly included in the fluctuating internal parameters of the system, and the explicit inclusion of the environment via the time-convolutionless projection operator method. Utilizing these two different frameworks, we show that the dissipator characterizing the dynamics of the reduced system, determined up to second order in the noise strength or bath-system coupling, is composed of two parts. One is universal, meaning that it keeps the same form regardless of the drive term. This form constitutes the relevant part of the dissipator only as long as the drive is weak. We thoroughly discuss the assumptions on which this treatment is based and its limitations. Then, by considering the first non-vanishing higher-order term in our expansion, we derive the other, drive-dependent, term completing the full dissipator. This part of the dissipator, originating from the third cumulant, is usually neglected when modeling the decoherent dynamics of controlled qubits. However, this further term constitutes the linear response correction due to memory-mediated environmental effects in driven-dissipative quantum systems. Also, it notably shows that the structure of our quantum master equation goes beyond the Lindblad form. The Lindblad form is recovered for memory-less baths. Finally, we demonstrate this technique to be highly accurate for the problems of dephasing in a driven qubit and for the theory of pseudo-modes for quantum environments.","PeriodicalId":20821,"journal":{"name":"Quantum Science and Technology","volume":"105 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145188513","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

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