Optical Synthesis of Large-Amplitude Squeezed Coherent-State Superpositions with Minimal Resources.
Phys Rev Lett
; 115(2): 023602, 2015 Jul 10.
Article
em En
| MEDLINE
| ID: mdl-26207468
ABSTRACT
We propose and experimentally realize a novel versatile protocol that allows the quantum state engineering of heralded optical coherent-state superpositions. This scheme relies on a two-mode squeezed state, linear mixing, and a n-photon detection. It is optimally using expensive non-Gaussian resources to build up only the key non-Gaussian part of the targeted state. In the experimental case of a two-photon detection based on high-efficiency superconducting nanowire single-photon detectors, the freely propagating state exhibits a 67% fidelity with a squeezed even coherent-state superposition with a size |α|(2)=3. The demonstrated procedure and the achieved rate will facilitate the use of such superpositions in subsequent protocols, including fundamental tests and optical hybrid quantum information implementations.
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MEDLINE
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En
Ano de publicação:
2015
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Article