دورية أكاديمية
Optimizing the spatial spread of a quantum walk.
| العنوان: | Optimizing the spatial spread of a quantum walk. |
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| المؤلفون: | Martín-Vázquez, Gonzalo, Rodríguez-Laguna, Javier |
| بيانات النشر: | Physical Review A |
| سنة النشر: | 2020 |
| المجموعة: | Universidad Francisco de Vitoria: Depósito Digital FV (DDFV) |
| الوصف: | We devise a protocol to build 1D time-dependent quantum walks in 1D maximizing the spatial spread throughout the procedure. We allow only one of the physical parameters of the coin-tossing operator to vary, i.e. the angle θ, such that for θ = 0 we have the ˆσz, while for θ = π/4 we obtain the Hadamard gate. The optimal θ sequences present non-trivial patterns, with mostly θ ≈ 0 alternated with θ ≈ π/4 values after increasingly long periods. We provide an analysis of the entanglement properties, quasi-energy spectrum and survival probability, providing a full physical picture. ; peer-reviewed ; 1,34 MB |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 1050-2947 |
| العلاقة: | https://journals.aps.org/pra/abstract/10.1103/PhysRevA.102.022223Test; http://hdl.handle.net/10641/2566Test |
| DOI: | 10.1103/PhysRevA.102.022223 |
| الإتاحة: | https://doi.org/10.1103/PhysRevA.102.022223Test http://hdl.handle.net/10641/2566Test |
| حقوق: | Atribución-NoComercial-SinDerivadas 3.0 España ; http://creativecommons.org/licenses/by-nc-nd/3.0/esTest/ ; openAccess |
| رقم الانضمام: | edsbas.84ADFCA7 |
| قاعدة البيانات: | BASE |
| تدمد: | 10502947 |
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| DOI: | 10.1103/PhysRevA.102.022223 |