Quantum-preserved transport of excitations in Rydberg-dressed atom arrays

被引：0
作者：
Panpan Li [1 ]
Jing Qian [1 ]
Weiping Zhang [2 ]
机构：
[1] School of Physics and Electronic Science, East China Normal University, Shanghai
[2] Chongqing Institute of East China Normal University, Chongqing
[3] School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai
[4] Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai
[5] Shanghai Research Center for Quantum Science, Shanghai
[6] Shanghai Branch, Hefei National Laboratory, Shanghai
[7] Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan
来源：
Quantum Frontiers | 2025年 / 4卷 / 1期
基金：
中国国家自然科学基金;
关键词：
Optimal control; Quantum transport; Rydberg atoms; Weak-coupling condition;
D O I：
10.1007/s44214-025-00078-4
中图分类号：
学科分类号：
摘要：
To transport high-quality quantum state between two distant qubits through one-dimensional spin chains, the perfect state transfer (PST) method serves as the first choice, due to its natively perfect transfer fidelity that is independent of the system dimension. However, the PST requires a precise modulation of the local pulse parameters as well as an accurate timing of dynamic evolution, and is thus very sensitive to variations in practice. Here, we propose a protocol for achieving quantum-preserved transport of excitations using an array of Rydberg-dressed atoms, enabled by optimal control of minimally global parameters. By treating the weak coupling of two marginal array atoms as a perturbation, an effective spin-exchange model with highly tunable interactions between the external weak and the inner strong driving atoms can be established, which allows for coherent excitation transfer even with large atomic position fluctuation. We furthermore show that the existence of long-time excitation propagation unattainable for systems under antiblockade facilitation conditions. Our results highlight an easily-implemented scheme for studying the dynamics of spin systems using Rydberg atoms and may guide the avenue to the engineering of complex many-body dynamics. © The Author(s) 2025.
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共 88 条
[1]  
Bennett C., DiVincenzo D., Quantum information and computation, Nature, 404, pp. 247-255, (2000)
[2]  
Northup T.E., Blatt R., Quantum information transfer using photons, Nat. Photonics, 8, pp. 356-363, (2014)
[3]  
Pirandola S., Eisert J., Weedbrook C., Furusawa A., Braunstein S.L., Advances in quantum teleportation, Nat. Photonics, 9, pp. 641-652, (2015)
[4]  
Egan L., Debroy D.M., Noel C., Risinger A., Zhu D., Biswas D., Newman M., Li M., Brown K.R., Cetina M., Monroe C., Fault-tolerant control of an error-corrected qubit, Nature, 598, pp. 281-286, (2021)
[5]  
Campbell E.T., Terhal B.M., Vuillot C., Roads towards fault-tolerant universal quantum computation, Nature, 549, pp. 172-179, (2017)
[6]  
Chamberland C., Noh K., Arrangoiz Arriola P., Campbell E.T., Hann C.T., Iverson J., Putterman H., Bohdanowicz T.C., Flammia S.T., Keller A., Refael G., Preskill J., Jiang L., Safavi Naeini A.H., Painter O., Brandao F.G.S.L., Building a fault-tolerant quantum computer using concatenated cat codes, PRX Quantum, 3, (2022)
[7]  
Christandl M., Datta N., Ekert A., Landahl A., Perfect state transfer in quantum spin networks, Phys. Rev. Lett, 92, (2004)
[8]  
Chen X., Mereau R., Feder D.L., Asymptotically perfect efficient quantum state transfer across uniform chains with two impurities, Phys. Rev. A, 93, (2016)
[9]  
Kay A., Perfect state transfer: beyond nearest-neighbor couplings, Phys. Rev. A, 73, (2006)
[10]  
Shi T., Li Y., Song Z., Sun C., Quantum-state transfer via the ferromagnetic chain in a spatially modulated field, Phys. Rev. A, 71, (2005)
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