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Title: Electro-optic modulation for high-speed characterization of entangled photon pairs

In this study, we demonstrate a new biphoton manipulation and characterization technique based on electro-optic intensity modulation and time shifting. By applying fast modulation signals with a sharply peaked cross-correlation to each photon from an entangled pair, it is possible to measure temporal correlations with significantly higher precision than that attainable using standard single-photon detection. Low-duty-cycle pulses and maximal-length sequences are considered as modulation functions, reducing the time spread in our correlation measurement by a factor of five compared to our detector jitter. With state-of-the-art electro-optic components, we expect the potential to surpass the speed of any single-photon detectors currently available.
 [1] ;  [2] ;  [2] ;  [2]
  1. Purdue Univ., West Lafayette, IN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Purdue Univ., West Lafayette, IN (United States)
Publication Date:
OSTI Identifier:
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Optics Letters
Additional Journal Information:
Journal Volume: 40; Journal Issue: 22; Journal ID: ISSN 0146-9592
Optical Society of America (OSA)
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE Laboratory Directed Research and Development (LDRD) Program
Country of Publication:
United States
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; photon statistics; electro-optical devices; correlators