Journal
NATURE COMMUNICATIONS
Volume 7, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms12480
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Funding
- German Research Foundation [HO 4787/1-1, SFB/TRR21]
- Carl-Zeiss Foundation
- European Research Council under the European Union's Seventh Framework Programme (FP)/ERC Grant [335266]
- EU-FET Grant [512862]
- H-FETPROACT Grant [640378]
- EPSRC Grant [EP/M014266/1]
- Nottingham Research Fellowship by the University of Nottingham
- Engineering and Physical Sciences Research Council [EP/M014266/1] Funding Source: researchfish
- EPSRC [EP/M014266/1] Funding Source: UKRI
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Mapping the strong interaction between Rydberg atoms onto single photons via electromagnetically induced transparency enables manipulation of light at the single-photon level and few-photon devices such as all-optical switches and transistors operated by individual photons. Here we demonstrate experimentally that Stark-tuned Forster resonances can substantially increase this effective interaction between individual photons. This technique boosts the gain of a single-photon transistor to over 100, enhances the non-destructive detection of single Rydberg atoms to a fidelity beyond 0.8, and enables high-precision spectroscopy on Rydberg pair states. On top, we achieve a gain larger than 2 with gate photon read-out after the transistor operation. Theory models for Rydberg polariton propagation on Forster resonance and for the projection of the stored spin-wave yield excellent agreement to our data and successfully identify the main decoherence mechanism of the Rydberg transistor, paving the way towards photonic quantum gates.
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