EPJ Quantum Technology最新文献_第9页

Quantum pricing with a smile: implementation of local volatility model on quantum computer 微笑的量子定价:局部波动模型在量子计算机上的实现

IF 5.3 2区物理与天体物理

EPJ Quantum Technology Pub Date : 2022-02-12 DOI: 10.1140/epjqt/s40507-022-00125-2

Kazuya Kaneko, Koichi Miyamoto, Naoyuki Takeda, Kazuyoshi Yoshino

{"title":"Quantum pricing with a smile: implementation of local volatility model on quantum computer","authors":"Kazuya Kaneko, Koichi Miyamoto, Naoyuki Takeda, Kazuyoshi Yoshino","doi":"10.1140/epjqt/s40507-022-00125-2","DOIUrl":"10.1140/epjqt/s40507-022-00125-2","url":null,"abstract":"<div><p>Quantum algorithms for the pricing of financial derivatives have been discussed in recent papers. However, the pricing model discussed in those papers is too simple for practical purposes. It motivates us to consider how to implement more complex models used in financial institutions. In this paper, we consider the local volatility (LV) model, in which the volatility of the underlying asset price depends on the price and time. As in previous studies, we use the quantum amplitude estimation (QAE) as the main source of quantum speedup and discuss the state preparation step of the QAE, or equivalently, the implementation of the asset price evolution. We compare two types of state preparation: One is the <i>amplitude encoding</i> (AE) type, where the probability distribution of the derivative’s payoff is encoded to the probabilistic amplitude. The other is the <i>pseudo-random number</i> (PRN) type, where sequences of PRNs are used to simulate the asset price evolution as in classical Monte Carlo simulation. We present detailed circuit diagrams for implementing these preparation methods in fault-tolerant quantum computation and roughly estimate required resources such as the number of qubits and T-count.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"9 1","pages":""},"PeriodicalIF":5.3,"publicationDate":"2022-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://epjquantumtechnology.springeropen.com/counter/pdf/10.1140/epjqt/s40507-022-00125-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4488652","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}

引用次数: 29

Experimenting quantum phenomena on NISQ computers using high level quantum programming 使用高级量子编程在NISQ计算机上实验量子现象

IF 5.3 2区物理与天体物理

EPJ Quantum Technology Pub Date : 2022-02-10 DOI: 10.1140/epjqt/s40507-022-00126-1

Duc M. Tran, Duy V. Nguyen, Bin Ho Le, Hung Q. Nguyen

引用次数: 3

A case study of variational quantum algorithms for a job shop scheduling problem 作业车间调度问题的变分量子算法实例研究

IF 5.3 2区物理与天体物理

EPJ Quantum Technology Pub Date : 2022-02-10 DOI: 10.1140/epjqt/s40507-022-00123-4

David Amaro, Matthias Rosenkranz, Nathan Fitzpatrick, Koji Hirano, Mattia Fiorentini

{"title":"A case study of variational quantum algorithms for a job shop scheduling problem","authors":"David Amaro, Matthias Rosenkranz, Nathan Fitzpatrick, Koji Hirano, Mattia Fiorentini","doi":"10.1140/epjqt/s40507-022-00123-4","DOIUrl":"10.1140/epjqt/s40507-022-00123-4","url":null,"abstract":"<div><p>Combinatorial optimization models a vast range of industrial processes aiming at improving their efficiency. In general, solving this type of problem exactly is computationally intractable. Therefore, practitioners rely on heuristic solution approaches. Variational quantum algorithms are optimization heuristics that can be demonstrated with available quantum hardware. In this case study, we apply four variational quantum heuristics running on IBM’s superconducting quantum processors to the job shop scheduling problem. Our problem optimizes a steel manufacturing process. A comparison on 5 qubits shows that the recent filtering variational quantum eigensolver (F-VQE) converges faster and samples the global optimum more frequently than the quantum approximate optimization algorithm (QAOA), the standard variational quantum eigensolver (VQE), and variational quantum imaginary time evolution (VarQITE). Furthermore, F-VQE readily solves problem sizes of up to 23 qubits on hardware without error mitigation post processing.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"9 1","pages":""},"PeriodicalIF":5.3,"publicationDate":"2022-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://epjquantumtechnology.springeropen.com/counter/pdf/10.1140/epjqt/s40507-022-00123-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4413605","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}

引用次数: 28

Enhancing robustness of noisy qutrit teleportation with Markovian memory 利用马尔可夫记忆增强噪声量子隐形传态的鲁棒性

IF 5.3 2区物理与天体物理

EPJ Quantum Technology Pub Date : 2022-02-10 DOI: 10.1140/epjqt/s40507-022-00122-5

RuiQing Xu, Ri-Gui Zhou, YaoChong Li, SheXiang Jiang, Hou Ian

{"title":"Enhancing robustness of noisy qutrit teleportation with Markovian memory","authors":"RuiQing Xu, Ri-Gui Zhou, YaoChong Li, SheXiang Jiang, Hou Ian","doi":"10.1140/epjqt/s40507-022-00122-5","DOIUrl":"10.1140/epjqt/s40507-022-00122-5","url":null,"abstract":"<div><p>Quantum teleportation is the fundamental communication unit in quantum communication. Here, a three-level system is selected for storing and transmitting quantum information, due to its unique advantages, such as lower cost than a higher-level system and higher capacity and security than a two-level system. It is known that the key procedure for perfect teleportation is the distribution of entanglement through quantum channel. However, amounts of noise existing in the quantum channel may interfere the entangled state, causing the degradation of quantum entanglement. In the physical implementations of quantum communication schemes, noise acting on the carriers of successive transmissions often exhibits some correlations, which is the so called quantum memory channel. In this paper, a memory channel model during the entanglement distribution phase is constructed and the uniform expression of the evolution of a two-qutrit entangled state under different kinds of correlated noise is derived. Finally, Pauli noise and amplitude damping noise as the typical noise source are considered to analyze the influence of memory effects of noise on qutrit teleportation. It is expected to show that three-level teleportation under these two types of channels can generally enhance the robustness to noise if the Markovian correlations of quantum channel are taken into consideration.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"9 1","pages":""},"PeriodicalIF":5.3,"publicationDate":"2022-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://epjquantumtechnology.springeropen.com/counter/pdf/10.1140/epjqt/s40507-022-00122-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4417970","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}

引用次数: 8

Bermudan option pricing by quantum amplitude estimation and Chebyshev interpolation 基于量子振幅估计和Chebyshev插值的百慕大期权定价

IF 5.3 2区物理与天体物理

EPJ Quantum Technology Pub Date : 2022-02-07 DOI: 10.1140/epjqt/s40507-022-00124-3

Koichi Miyamoto

引用次数: 12

Universal set of quantum gates for the flip-flop qubit in the presence of 1/f noise 在存在1/f噪声的情况下，用于触发器量子比特的通用量子门

IF 5.3 2区物理与天体物理

EPJ Quantum Technology Pub Date : 2022-01-18 DOI: 10.1140/epjqt/s40507-022-00120-7

Elena Ferraro, Davide Rei, Matteo Paris, Marco De Michielis

{"title":"Universal set of quantum gates for the flip-flop qubit in the presence of 1/f noise","authors":"Elena Ferraro, Davide Rei, Matteo Paris, Marco De Michielis","doi":"10.1140/epjqt/s40507-022-00120-7","DOIUrl":"10.1140/epjqt/s40507-022-00120-7","url":null,"abstract":"<div><p>Impurities hosted in semiconducting solid matrices represent an extensively studied platform for quantum computing applications. In this scenario, the so-called flip-flop qubit emerges as a convenient choice for scalable implementations in silicon. Flip-flop qubits are realized implanting phosphorous donor in isotopically purified silicon, and encoding the logical states in the donor nuclear spin and in its bound electron. Electrically modulating the hyperfine interaction by applying a vertical electric field causes an Electron Dipole Spin Resonance (EDSR) transition between the states with antiparallel spins <span>({|downarrow Uparrow rangle ,|uparrow Downarrow rangle })</span>, that are chosen as the logical states. When two qubits are considered, the dipole-dipole interaction is exploited to establish long-range coupling between them. A universal set of quantum gates for flip-flop qubits is here proposed and the effect of a realistic 1/f noise on the gate fidelity is investigated for the single qubit <span>(R_{z}(-frac{pi }{2}))</span> and Hadamard gate and for the two-qubit <span>(sqrt{mathit{iSWAP}})</span> gate.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"9 1","pages":""},"PeriodicalIF":5.3,"publicationDate":"2022-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://epjquantumtechnology.springeropen.com/counter/pdf/10.1140/epjqt/s40507-022-00120-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4719085","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}

引用次数: 5

Engineering the microwave to infrared noise photon flux for superconducting quantum systems 超导量子系统中微波到红外噪声光子通量的工程设计

IF 5.3 2区物理与天体物理

EPJ Quantum Technology Pub Date : 2022-01-15 DOI: 10.1140/epjqt/s40507-022-00121-6

Sergey Danilin, João Barbosa, Michael Farage, Zimo Zhao, Xiaobang Shang, Jonathan Burnett, Nick Ridler, Chong Li, Martin Weides

{"title":"Engineering the microwave to infrared noise photon flux for superconducting quantum systems","authors":"Sergey Danilin, João Barbosa, Michael Farage, Zimo Zhao, Xiaobang Shang, Jonathan Burnett, Nick Ridler, Chong Li, Martin Weides","doi":"10.1140/epjqt/s40507-022-00121-6","DOIUrl":"10.1140/epjqt/s40507-022-00121-6","url":null,"abstract":"<div><p>Electromagnetic filtering is essential for the coherent control, operation and readout of superconducting quantum circuits at milliKelvin temperatures. The suppression of spurious modes around transition frequencies of a few GHz is well understood and mainly achieved by on-chip and package considerations. Noise photons of higher frequencies – beyond the pair-breaking energies – cause decoherence and require spectral engineering before reaching the packaged quantum chip. The external wires that pass into the refrigerator and go down to the quantum circuit provide a direct path for these photons. This article contains quantitative analysis and experimental data for the noise photon flux through coaxial, filtered wiring. The attenuation of the coaxial cable at room temperature and the noise photon flux estimates for typical wiring configurations are provided. Compact cryogenic microwave low-pass filters with CR-110 and Esorb-230 absorptive dielectric fillings are presented along with experimental data at room and cryogenic temperatures up to 70 GHz. Filter cut-off frequencies between 1 to 10 GHz are set by the filter length, and the roll-off is material dependent. The relative dielectric permittivity and magnetic permeability for the Esorb-230 material in the pair-breaking frequency range of 75 to 110 GHz are measured, and the filter properties in this frequency range are calculated. The estimated dramatic suppression of the noise photon flux due to the filter proves its usefulness for experiments with superconducting quantum systems.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"9 1","pages":""},"PeriodicalIF":5.3,"publicationDate":"2022-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://epjquantumtechnology.springeropen.com/counter/pdf/10.1140/epjqt/s40507-022-00121-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4612191","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}

引用次数: 9

Proof-of-principle demonstration of semi-quantum key distribution based on the Mirror protocol 基于镜像协议的半量子密钥分发原理验证

IF 5.8 2区物理与天体物理

EPJ Quantum Technology Pub Date : 2021-12-20 DOI: 10.1140/epjqt/s40507-021-00117-8

Siyu Han, Yutao Huang, Shang Mi, Xiaojuan Qin, Jindong Wang, Yafei Yu, Zhengjun Wei, Zhiming Zhang

引用次数: 0

Quantum anonymous collision detection for quantum networks 量子网络中的量子匿名碰撞检测

IF 5.8 2区物理与天体物理

EPJ Quantum Technology Pub Date : 2021-12-07 DOI: 10.1140/epjqt/s40507-021-00116-9

Awais Khan, Uman Khalid, Junaid ur Rehman, Kyesan Lee, Hyundong Shin

引用次数: 0

Airborne quantum key distribution with boundary layer effects 边界层效应下的机载量子密钥分配

IF 5.8 2区物理与天体物理

EPJ Quantum Technology Pub Date : 2021-11-19 DOI: 10.1140/epjqt/s40507-021-00115-w

Hui-Cun Yu, Bang-Ying Tang, Huan Chen, Yang Xue, Jie Tang, Wan-Rong Yu, Bo Liu, Lei Shi

{"title":"Airborne quantum key distribution with boundary layer effects","authors":"Hui-Cun Yu, Bang-Ying Tang, Huan Chen, Yang Xue, Jie Tang, Wan-Rong Yu, Bo Liu, Lei Shi","doi":"10.1140/epjqt/s40507-021-00115-w","DOIUrl":"10.1140/epjqt/s40507-021-00115-w","url":null,"abstract":"<div><p>With the substantial progress of terrestrial fiber-based quantum networks and satellite-based quantum nodes, airborne quantum key distribution (QKD) is now becoming a flexible bond between terrestrial fiber and satellite, which is an efficient solution to establish a mobile, on-demand, and real-time coverage quantum network. However, the random distributed boundary layer is always surrounded to the surface of the aircraft when the flight speed larger than 0.3 Ma, which would introduce random wavefront aberration, jitter and extra intensity attenuation to the transmitted photons. In this article, we propose a performance evaluation scheme of airborne QKD with boundary layer effects. The analyzed results about the photon deflection angle and wavefront aberration effects, show that the aero-optical effects caused by the boundary layer can not be ignored, which would heavily decrease the final secure key rate. In our proposed airborne QKD scenario, the boundary layer would introduce ∼3.5 dB loss to the transmitted photons and decrease ∼70.9% of the secure key rate. With tolerated quantum bit error rate set to 8%, the suggested quantum communication azimuth angle between the aircraft and the ground station is within 55<sup>∘</sup>. Furthermore, the optimal beacon laser module and adaptive optics module are suggested to be employed, to improve the performance of airborne QKD system. Our detailed airborne QKD performance evaluation study can be performed to the future airborne quantum communication designs.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"8 1","pages":""},"PeriodicalIF":5.8,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://epjquantumtechnology.springeropen.com/counter/pdf/10.1140/epjqt/s40507-021-00115-w","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43804546","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}

引用次数: 0