International Journal of Quantum Information最新文献_第8页

Abstract Model of Continuous-Time Quantum Walk Based on Bernoulli Functionals and Perfect State Transfer 基于Bernoulli泛函和完全状态转移的连续时间量子行走抽象模型

IF 1.2 4区物理与天体物理

International Journal of Quantum Information Pub Date : 2022-11-30 DOI: 10.1142/s0219749923500156

Ce Wang

{"title":"Abstract Model of Continuous-Time Quantum Walk Based on Bernoulli Functionals and Perfect State Transfer","authors":"Ce Wang","doi":"10.1142/s0219749923500156","DOIUrl":"https://doi.org/10.1142/s0219749923500156","url":null,"abstract":"In this paper, we present an abstract model of continuous-time quantum walk (CTQW) based on Bernoulli functionals and show that the model has perfect state transfer (PST), among others. Let $mathfrak{h}$ be the space of square integrable complex-valued Bernoulli functionals, which is infinitely dimensional. First, we construct on a given subspace $mathfrak{h}_L subset mathfrak{h}$ a self-adjoint operator $Delta_L$ via the canonical unitary involutions on $mathfrak{h}$, and by analyzing its spectral structure we find out all its eigenvalues. Then, we introduce an abstract model of CTQW with $mathfrak{h}_L$ as its state space, which is governed by the Schr\"{o}dinger equation with $Delta_L$ as the Hamiltonian. We define the time-average probability distribution of the model, obtain an explicit expression of the distribution, and, especially, we find the distribution admits a symmetry property. We also justify the model by offering a graph-theoretic interpretation to the operator $Delta_L$ as well as to the model itself. Finally, we prove that the model has PST at time $t=frac{pi}{2}$. Some other interesting results are also proven of the model.","PeriodicalId":51058,"journal":{"name":"International Journal of Quantum Information","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41290661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1

Entanglement recovery in noisy binary quantum information protocols via three-qubit quantum error correction codes 基于三量子位量子纠错码的噪声二进制量子信息协议纠缠恢复

IF 1.2 4区物理与天体物理

International Journal of Quantum Information Pub Date : 2022-11-21 DOI: 10.1142/S0219749923400026

Alessio Morea, Michele N. Notarnicola, S. Olivares

引用次数: 0

Quantum simulation of quantum mechanical system with spatial noncommutativity 具有空间非对易性的量子力学系统的量子模拟

IF 1.2 4区物理与天体物理

International Journal of Quantum Information Pub Date : 2022-11-15 DOI: 10.1142/S0219749923500284

S. Hasibul, Hassan Chowdhury, Talal Ahmed Chowdhury, S. Nasri, Omar Ibna Nazim, S. Saad

引用次数: 0

Correlations dynamics of two-spin XYZ Heisenberg model via negativity and skew information 通过负性和倾斜信息的两自旋XYZ海森堡模型的相关动力学

IF 1.2 4区物理与天体物理

International Journal of Quantum Information Pub Date : 2022-11-04 DOI: 10.1142/s0219749922500265

A. N. Khedr, M. Tammam, M. Abdel-Aty

{"title":"Correlations dynamics of two-spin XYZ Heisenberg model via negativity and skew information","authors":"A. N. Khedr, M. Tammam, M. Abdel-Aty","doi":"10.1142/s0219749922500265","DOIUrl":"https://doi.org/10.1142/s0219749922500265","url":null,"abstract":"We introduce a new framework for quantum two-spin correlations based on a quantum skew information quantity and long-negativity. The quantum correlations for an anisotropic two-qubit Heisenberg [Formula: see text] model are affected by physical parameters such as intrinsic decoherence, Werner states and time-dependent magnetic fields. In particular, the joint effects of Werner states, magnetic fields and anisotropic parameters on quantum correlation robustness are investigated in the presence of intrinsic decoherence. For an initially uncorrelated state, robust entanglement is generated while skew information between the two quantum bits no longer exists. It is shown that the magnetic field makes the system strongly correlated with incredibly significant steady-state values in uncorrelated states. The phenomenon of sudden death and sudden birth appear during the evolution process of initial conditions. Finally, if the system starts from a mixed state or a Werner state, the magnetic field does not play a significant role in the monotonically decreasing correlations. By leveraging our framework, one can create a kind of stability between the uncertainty-induced quantum nonlocality and the local quantum uncertainty correlations.","PeriodicalId":51058,"journal":{"name":"International Journal of Quantum Information","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46438668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Can quantum non-locality be connected to extra-dimensions? 量子非定域性能与额外维度相联系吗?

IF 1.2 4区物理与天体物理

International Journal of Quantum Information Pub Date : 2022-11-03 DOI: 10.1142/S0219749923400038

M. Genovese

引用次数: 1

Optical Schrodinger cats with generalized coherent states 具有广义相干态的光学薛定谔猫

IF 1.2 4区物理与天体物理

International Journal of Quantum Information Pub Date : 2022-10-28 DOI: 10.1142/s0219749923400014

F. Giraldi

引用次数: 0

Identical damped harmonic oscillators described by coherent states 用相干态描述的相同阻尼谐振子

IF 1.2 4区物理与天体物理

International Journal of Quantum Information Pub Date : 2022-09-02 DOI: 10.1142/S0219749923500119

S. Mousavi

{"title":"Identical damped harmonic oscillators described by coherent states","authors":"S. Mousavi","doi":"10.1142/S0219749923500119","DOIUrl":"https://doi.org/10.1142/S0219749923500119","url":null,"abstract":"Some aspects of quantum damped harmonic oscillator (DHO) obeying a Markovian master equation are considered in the absence of thermal noise. The continuity equation is derived and Bohmian trajectories are constructed. As a solution of the master equation, we take a single coherent state and compute analytically the relative entropy of coherence, $C_r$, in the energy, position and momentum bases. Although $C_r$ is constant in both the position and the momentum bases, it is a decreasing function of time in the energy basis becoming zero at long times, revealing its role as the preferred basis. Then, quantum coherence is computed for a superposition of two coherent states, a cat state, and also a superposition of two cat states in the energy basis as a function of separation, in the complex plane, between the two superposed states. It is seen that the quantum coherence increases with this separation. Furthermore, quantum coherence of superposition is compared to that of decomposed states in the superposition. Finally, considering a system of two non-interacting DHOs, the effect of quantum statistics is studied on the coherence of reduced single-particle states, the joint detection probability and the mean square separation of particles. Our computations show that the single-particle coherence for antisymmetric states is always less than that of symmetric ones. Furthermore, boson anti-bunching and fermion bunching is seen in this open system. This behavior of bosons is the matter-wave analogue of photon anti-bunching seen in a modified Hanbury Brown-Twiss (HBT) interferometer.","PeriodicalId":51058,"journal":{"name":"International Journal of Quantum Information","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2022-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42061126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Quantum state tomography of multi-qubit systems—a comparative study 多量子位系统的量子态层析成像——一个比较研究

IF 1.2 4区物理与天体物理

International Journal of Quantum Information Pub Date : 2022-08-19 DOI: 10.1142/s0219749922500241

Cheng-Han Pan, Jiaoyang Zhang, S. Cong, Sajede Harraz

引用次数: 1

Generation of entangled states between two transmon qubits via invariant-based shortcuts with constant drivings 基于不变驱动的快捷键在两个传输量子比特之间产生纠缠态

IF 1.2 4区物理与天体物理

International Journal of Quantum Information Pub Date : 2022-07-15 DOI: 10.1142/s0219749922500228

Xiao-Jing Lu, Zhikang Feng, Zheng-Yin Zhao, Ming Li, Zi-Liang Cai

引用次数: 0

Implementation of Quantum Hitting Times of Cubelike Graphs on IBM'S Qiskit Platform 在IBM Qiskit平台上实现立方体图的量子命中次数

IF 1.2 4区物理与天体物理

International Journal of Quantum Information Pub Date : 2022-07-13 DOI: 10.1142/s0219749922500204

Jaideep Mulherkar, Rishikant Rajdeepak, V. Sunitha

引用次数: 0