### Abstract

Lingua originale | English |
---|---|

Numero di pagine | 9 |

Rivista | Nature Physics |

Stato di pubblicazione | Published - 2018 |

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### All Science Journal Classification (ASJC) codes

- Physics and Astronomy(all)

### Cita questo

*Nature Physics*.

**High-dimensional one-way quantum processing implemented on d-level cluster states.** / Sciara, Stefania; Cino, Alfonso Carmelo; Caspani, Lucia; Kashyap, Raman; Kues, Michael; Loranger, Sébastien; Reimer, Christian; Zhang, Yanbing; Romero Cortés, Luis; Roztocki, Piotr; Sciara, Stefania; Fischer, Bennet; Islam, Mehedi; Morandotti, Roberto; Azaña, José; Munro, William J.; Moss, David J.; Little, Brent E.; Chu, Sai T.

Risultato della ricerca: Article

*Nature Physics*.

}

TY - JOUR

T1 - High-dimensional one-way quantum processing implemented on d-level cluster states

AU - Sciara, Stefania

AU - Cino, Alfonso Carmelo

AU - Caspani, Lucia

AU - Kashyap, Raman

AU - Kues, Michael

AU - Loranger, Sébastien

AU - Reimer, Christian

AU - Zhang, Yanbing

AU - Romero Cortés, Luis

AU - Roztocki, Piotr

AU - Sciara, Stefania

AU - Fischer, Bennet

AU - Islam, Mehedi

AU - Morandotti, Roberto

AU - Azaña, José

AU - Munro, William J.

AU - Moss, David J.

AU - Little, Brent E.

AU - Chu, Sai T.

PY - 2018

Y1 - 2018

N2 - Taking advantage of quantum mechanics for executing computational tasks faster than classical computers or performing measurements with precision exceeding the classical limit requires the generation of specific large and complex quantum states. In this context, cluster states are particularly interesting because they can enable the realization of universal quantum computers by means of a ‘one-way’ scheme, where processing is performed through measurements. The generation of cluster states based on sub-systems that have more than two dimensions, d-level cluster states, provides increased quantum resources while keeping the number of parties constant, and also enables novel algorithms8. Here, we experimentally realize, characterize and test the noise sensitivity of three-level, four-partite cluster states formed by two photons in the time and frequency domain, confirming genuine multi-partite entanglement with higher noise robustness compared to conventional two-level cluster states. We perform proof-of-concept high-dimensional one-way quantum operations, where the cluster states are transformed into orthogonal, maximally entangled d-level two-partite states by means of projection measurements. Our scalable approach is based on integrated photonic chips and optical fibre communication components, thus achieving new and deterministic functionalities.

AB - Taking advantage of quantum mechanics for executing computational tasks faster than classical computers or performing measurements with precision exceeding the classical limit requires the generation of specific large and complex quantum states. In this context, cluster states are particularly interesting because they can enable the realization of universal quantum computers by means of a ‘one-way’ scheme, where processing is performed through measurements. The generation of cluster states based on sub-systems that have more than two dimensions, d-level cluster states, provides increased quantum resources while keeping the number of parties constant, and also enables novel algorithms8. Here, we experimentally realize, characterize and test the noise sensitivity of three-level, four-partite cluster states formed by two photons in the time and frequency domain, confirming genuine multi-partite entanglement with higher noise robustness compared to conventional two-level cluster states. We perform proof-of-concept high-dimensional one-way quantum operations, where the cluster states are transformed into orthogonal, maximally entangled d-level two-partite states by means of projection measurements. Our scalable approach is based on integrated photonic chips and optical fibre communication components, thus achieving new and deterministic functionalities.

UR - http://hdl.handle.net/10447/338793

M3 - Article

JO - Nature Physics

JF - Nature Physics

SN - 1745-2473

ER -