AI Article Synopsis
- Researchers developed a high-rate source capable of producing single- and two-photon states using short pulses and cavities, achieving heralding rates of 200 kHz for single photons and 250 Hz for two-photon states.
- The introduction of a low-loss optical delay line improved the detection of heralded quantum states, enhancing the measurement process.
- The experiment achieved fidelities of 68.5% (91% with corrections) for single photons and 50.4% (85% with corrections) for two-photon states, suggesting potential for creating more complex quantum states in the future.
Article Abstract
We report the implementation of a high-rate source of single- and two-photon states. By combining the advantages of short pulses and cavities, heralding rates as high as 200 kHz have been obtained for the single photons, as well as 250 Hz for the two-photon states. In this setup, homodyne measurements are conditioned by the heralding of the quantum states thanks to the introduction of a low-loss optical delay line in the heralded states path. This enables the detection of most of the heralded events, and fidelities reaching 68.5% (91% with correction for detection efficiency) and 50.4% (85% with correction) were obtained for the single- and two-photon states, respectively. Such high rates and fidelities in the generation of elementary Fock states may open the path for the production of complex quantum states.
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| http://dx.doi.org/10.1364/OE.27.003113 | DOI Listing |
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