BARBIERI, Marco; SPAGNOLO, Nicolò; FERREYROL, Franck; BLANDINO, Rémi; SMITH, Brian J; TUALLE-BROURI, Rosa

doi:10.1038/srep15125

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BARBIERI, Marco
Universita degli Studi Roma, Dipartimento di Scienze

SPAGNOLO, Nicolò
Dipartimento di Fisica [Roma La Sapienza]

FERREYROL, Franck
Laboratoire Photonique, Numérique et Nanosciences [LP2N]

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Scientific Reports. 2015-10-15, vol. 5, p. 15125

Nature Publishing Group

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Engineering quantum operations is a crucial capability needed for developing quantum technologies and designing new fundamental physics tests. Here we propose a scheme for realising a controlled operation acting on a travelling continuous-variable quantum field, whose functioning is determined by a discrete input qubit. This opens a new avenue for exploiting advantages of both information encoding approaches. Furthermore, this approach allows for the program itself to be in a superposition of operations, and as a result it can be used within a quantum processor, where coherences must be maintained. Our study can find interest not only in general quantum state engineering and information protocols, but also details an interface between different physical platforms. Potential applications can be found in linking optical qubits to optical systems for which coupling is best described in terms of their continuous variables, such as optomechanical devices.< Réduire

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Qubit-Programmable Operationson Quantum Light Fields

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