Coherent storage and manipulation of broadband photons via dynamically controlled Autler-Townes splitting

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TypeArticle
Journal titleQuantum Physics
Article numberarXiv:1710.08902
Pages# of pages: 17
AbstractThe coherent control of light with matter, enabling storage and manipulation of optical signals, was revolutionized by electromagnetically induced transparency (EIT), which is a quantum interference effect. For strong electromagnetic fields that induce a wide transparency band, this quantum interference vanishes, giving rise to the well-known phenomenon of Autler-Townes splitting (ATS). To date, it is an open question whether ATS can be directly leveraged for coherent control as more than just a case of "bad" EIT. Here, we establish a protocol showing that dynamically controlled absorption of light in the ATS regime mediates coherent storage and manipulation that is inherently suitable for efficient broadband quantum memory and processing devices. We experimentally demonstrate this protocol by storing and manipulating nanoseconds-long optical pulses through a collective spin state of laser-cooled Rb atoms for up to a microsecond. Furthermore, we show that our approach substantially relaxes the technical requirements intrinsic to established memory schemes, rendering it suitable for broad range of platforms with applications to quantum information processing, high-precision spectroscopy, and metrology.
Publication date
PublisherCornell University Library
Linkhttps://arxiv.org/abs/1710.08902
LanguageEnglish
AffiliationSecurity and Disruptive Technologies; National Research Council Canada
Peer reviewedNo
NPARC number23002451
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Record identifier1191153e-f83a-40d3-97bf-dabb3b3f1828
Record created2017-11-10
Record modified2017-11-10
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