Data di Pubblicazione:
2017
Citazione:
Quantum state engineering using one-dimensional discrete-time quantum walks / L. Innocenti, H. Majury, T. Giordani, N. Spagnolo, F. Sciarrino, M. Paternostro, A. Ferraro. - In: PHYSICAL REVIEW A. - ISSN 2469-9926. - 96:6(2017 Dec 21), pp. 062326.062326-1-062326.062326-11. [10.1103/PhysRevA.96.062326]
Abstract:
Quantum state preparation in high-dimensional systems is an essential requirement for many quantum-technology applications. The engineering of an arbitrary quantum state is, however, typically strongly dependent on the experimental platform chosen for implementation, and a general framework is still missing. Here we show that coined quantum walks on a line, which represent a framework general enough to encompass a variety of different platforms, can be used for quantum state engineering of arbitrary superpositions of the walker's sites. We achieve this goal by identifying a set of conditions that fully characterize the reachable states in the space comprising walker and coin and providing a method to efficiently compute the corresponding set of coin parameters. We assess the feasibility of our proposal by identifying a linear optics experiment based on photonic orbital angular momentum technology.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
L. Innocenti, H. Majury, T. Giordani, N. Spagnolo, F. Sciarrino, M. Paternostro, A. Ferraro
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