Abstract
A Bell inequality is a fundamental test to rule out local hidden variable model descriptions of correlations between two physically separated systems. There have been a number of experiments in which a Bell inequality has been violated using discrete-variable systems. We demonstrate a violation of Bell's inequality using continuous variable quadrature measurements. By creating a four-mode entangled state with homodyne detection, we recorded a clear violation with a Bell value of B=2.31±0.02. This opens new possibilities for using continuous variable states for device independent quantum protocols.
Original language | English |
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Article number | 040406 |
Journal | Physical Review Letters |
Volume | 120 |
Issue number | 4 |
DOIs | |
Publication status | Published - 25 Jan 2018 |