6533b7dcfe1ef96bd1272a71
RESEARCH PRODUCT
Experimental Engineering of Arbitrary Qudit States with Discrete-Time Quantum Walks
Lorenzo MarrucciFabio SciarrinoTaira GiordaniLuca InnocentiSabrina EmilianiEmanuele PolinoMauro PaternostroNicolò SpagnoloAlessandro FerraroHelena MajuryAlessia Supranosubject
qudit statesPhotonLightComputer scienceFOS: Physical sciencesGeneral Physics and Astronomy01 natural sciencesSettore FIS/03 - Fisica Della MateriaDegrees of freedom (mechanics)symbols.namesakeQuantum statequantum information0103 physical sciencesquantum walksphotonsQuantum walkStatistical physics010306 general physicsQuantum information scienceQuantumQuantum computerQuantum PhysicsQuantum opticsHilbert spacequatum walks; qudit states; photonsQuantum computersQuantum technologysymbolsQuantum Physics (quant-ph)quatum walksdescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-01-18 |