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2015 ; 5
(ä): 15125
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Qubit-Programmable Operations on Quantum Light Fields
#MMPMID26468614
Barbieri M
; Spagnolo N
; Ferreyrol F
; Blandino R
; Smith BJ
; Tualle-Brouri R
Sci Rep
2015[Oct]; 5
(ä): 15125
PMID26468614
show ga
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.