Deterministic Down-Converter and Continuous Photon-Pair Source within the Bad-Cavity Limit

The development, characterization, and control of N-photon sources are instrumental for quantum technological applications. This work constitutes a step forward in this direction, where we propose a cavity quantum electrodynamics setup designed for the generation of photon pairs. We identify both th...

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Bibliographic Details
Published in:Physical review letters 2016-11, Vol.117 (20), p.203602-203602, Article 203602
Main Authors: Chang, Yue, González-Tudela, Alejandro, Sánchez Muñoz, Carlos, Navarrete-Benlloch, Carlos, Shi, Tao
Format: Article
Language:English
Subjects:
Conversion
Down-converters
Formalism
Holes
Mathematical analysis
Photons
Proposals
Superconductivity
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Summary:The development, characterization, and control of N-photon sources are instrumental for quantum technological applications. This work constitutes a step forward in this direction, where we propose a cavity quantum electrodynamics setup designed for the generation of photon pairs. We identify both the regime where our system works as a deterministic down-converter of a single input photon and as an optimal two-photon source under weak continuous driving. We use both the scattering and master equation formalisms to characterize the system, and from their connection naturally arises a physical criterion characterizing when weakly driven systems behave as continuous antibunched two-photon sources. We also show that the outgoing photons share nontrivial quantum correlations in general. We provide a specific implementation based on state-of-the-art superconducting circuits, showing how our proposal is within the reach of current technologies. As an outlook, we show the proposal can be extended to achieve deterministic conversion of a single photon into N photons.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.117.203602