The capability to generate and manipulate quantum states in high-dimensional Hilbert spaces is a crucial step for the development of quantum technologies, from quantum communication to quantum computation. One-dimensional quantum walk dynamics represents a valid tool in the task of engineering arbitrary quantum states. Here we affirm such potential in a linear-optics platform that realizes discrete-time quantum walks in the orbital angular momentum degree of freedom of photons. Different classes of relevant qudit states in a six-dimensional space are prepared and measured, confirming the feasibility of the protocol. Our results represent a further investigation of quantum walk dynamics in photonics platforms, paving the way for the use of such a quantum state-engineering toolbox for a large range of applications.

Giordani T., Polino E., Emiliani S., Suprano A., Innocenti L., Majury H., et al. (2019). Experimental Engineering of Arbitrary Qudit States with Discrete-Time Quantum Walks. PHYSICAL REVIEW LETTERS, 122(2), 020503 [10.1103/PhysRevLett.122.020503].

Experimental Engineering of Arbitrary Qudit States with Discrete-Time Quantum Walks

Innocenti L.
;
Paternostro M.;
2019-01-18

Abstract

The capability to generate and manipulate quantum states in high-dimensional Hilbert spaces is a crucial step for the development of quantum technologies, from quantum communication to quantum computation. One-dimensional quantum walk dynamics represents a valid tool in the task of engineering arbitrary quantum states. Here we affirm such potential in a linear-optics platform that realizes discrete-time quantum walks in the orbital angular momentum degree of freedom of photons. Different classes of relevant qudit states in a six-dimensional space are prepared and measured, confirming the feasibility of the protocol. Our results represent a further investigation of quantum walk dynamics in photonics platforms, paving the way for the use of such a quantum state-engineering toolbox for a large range of applications.
18-gen-2019
Settore FIS/03 - Fisica Della Materia
Giordani T., Polino E., Emiliani S., Suprano A., Innocenti L., Majury H., et al. (2019). Experimental Engineering of Arbitrary Qudit States with Discrete-Time Quantum Walks. PHYSICAL REVIEW LETTERS, 122(2), 020503 [10.1103/PhysRevLett.122.020503].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/533798
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