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Conditional generation of Fock states and Schrödinger-cat states via adding multiple photons to a squeezed vacuum state

Shuai Wang, Hong‐Chun Yuan, Xuefeng Xu

The European Physical Journal DMay 1, 201311 citations

Engineering vacuum-evacuated photonic states with three input beams and two detectors

Sun-Hyun Youn

From the explicit form of the probability amplitude for two cascade-placed beam splitters (with one squeezed state input and two coherent state inputs), we calculated the probability amplitude of the output beam as a function of the transmittance of the two beam splitters and the amplitude and the relative phase of the three input states. At a certain condition, the output beam had no vacuum and was in a highly nonclassical state that contained more than one photon. Armed with explicit probability amplitude for two beam splitters and two coherent states, the squeezed vacuum state might be a very useful tool for generating highly nonclassical light.From the explicit form of the probability amplitude for two cascade-placed beam splitters (with one squeezed state input and two coherent state inputs), we calculated the probability amplitude of the output beam as a function of the transmittance of the two beam splitters and the amplitude and the relative phase of the three input states. At a certain condition, the output beam had no vacuum and was in a highly nonclassical state that contained more than one photon. Armed with explicit probability amplitude for two beam splitters and two coherent states, the squeezed vacuum state might be a very useful tool for generating highly nonclassical light.

Journal of the Korean Physical SocietyOct 1, 20134 citations

Conditional generation scheme for high-fidelity Yurke-Stoler states by mixing two coherent beams with a squeezed vacuum state

Sun-Hyun Youn

The numerical conditions to generate high-fidelity Yurke-Stoler states (|α > +e iψ | − α >)were found for two cascade-placed beam splitters with one squeezed state input and two coherent state inputs. Controlling the amplitudes and the phases of beams allows for various Yurke-Stoler states to be manipulated with ultra-high fidelity, and the expected theoretical fidelity is more than 0.9999.

arXiv:1511.07956Journal of the Korean Physical SocietyJan 1, 20151 citation

Generation of entangled coherent-squeezed states: their entanglement and nonclassical properties

Amir Karimi, Mohammad Kazem Tavassoly

Quantum Information ProcessingJan 9, 201625 citations

The introduction of entangled coherent-squeezed states and their physical generation

Amir Karimi, Mohammad Kazem Tavassoly

انجمن اپتیک و فوتونیک ایرانMar 15, 20160 citations

Entangled coherent states created by mixing squeezed vacuum and coherent light

Yonatan Israel, Lior Cohen, Xin-Bing Song +3 more

Entangled coherent states are shown to emerge, with high fidelity, when mixing coherent and squeezed vacuum states of light on a beam-splitter. These maximally entangled states, where photons bunch at the exit of a beamsplitter, are measured experimentally by Fock-state projections. Entanglement is examined theoretically using a Bell-type nonlocality test and compared with ideal entangled coherent states. We experimentally show nearly perfect similarity with entangled coherent states for an optimal ratio of coherent and squeezed vacuum light. In our scheme, entangled coherent states are generated deterministically with small amplitudes, which could be beneficial, for example, in deterministic distribution of entanglement over long distances.Entangled coherent states are shown to emerge, with high fidelity, when mixing coherent and squeezed vacuum states of light on a beam-splitter. These maximally entangled states, where photons bunch at the exit of a beamsplitter, are measured experimentally by Fock-state projections. Entanglement is examined theoretically using a Bell-type nonlocality test and compared with ideal entangled coherent states. We experimentally show nearly perfect similarity with entangled coherent states for an optimal ratio of coherent and squeezed vacuum light. In our scheme, entangled coherent states are generated deterministically with small amplitudes, which could be beneficial, for example, in deterministic distribution of entanglement over long distances.

arXiv:1707.01809OpticaMay 29, 201932 citations

Conditional generation scheme for entangled vacuum evacuated coherent states by mixing two coherent beams with a squeezed vacuum state

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Conditional generation scheme for entangled vacuum evacuated coherent states by mixing two coherent beams with a squeezed vacuum state

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