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Trapped Ion Quantum Computing

Temporal Quantum-State Tomography of Narrowband Biphotons

arXiv
Authors: Peng Chen, Chi Shu, Xianxin Guo, M. M. T. Loy, Shengwang Du

Year

2014

Paper ID

47410

Status

Preprint

Abstract Read

~2 min

Abstract Words

77

Citations

N/A

Abstract

We describe and demonstrate a quantum state tomography for measuring the complex temporal waveform of narrowband biphotons. Through six sets of two-photon interference measurements projected in different polarization subspaces, we can construct the time-frequency entangled two-photon joint amplitude and phase functions in continuous-variable time domain. For the first time, we apply this technique to experimentally determine the temporal quantum states of narrowband biphotons generated from spontaneous four-wave mixing in cold atoms, and fully confirm the theoretical predictions.

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  • This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
  • It adds a 2014 reference point for readers tracking recent quantum research.
  • We describe and demonstrate a quantum state tomography for measuring the complex temporal waveform of narrowband biphotons.

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