dorsal/arxiv
View SchemaHigh efficiency photon counting using stopped light
| Authors | A. Imamoglu |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0205196 |
| URL | https://arxiv.org/abs/quant-ph/0205196 |
| DOI | 10.1103/PhysRevLett.89.163602 |
Abstract
Single-photon detection and photon counting play a central role in a large number of quantum communication and computation protocols. While the efficiency of state-of-the-art photo-detectors is well below the desired limits, quantum state measurements in trapped ions can be carried out with efficiencies approaching 100%. Here, we propose a method that can in principle achieve ideal photon counting, by combining the techniques of photonic quantum memory and ion-trap fluorescence detection: after mapping the quantum state of a propagating light pulse onto metastable collective excitations of a trapped cold atomic gas, it is possible to monitor the resonance fluorescence induced by an additional laser field that only couples to the metastable excited state. Even with a photon collection/detection efficiency as low as 10%, it is possible to achieve photon counting with efficiency approaching 100%.
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"abstract": "Single-photon detection and photon counting play a central role in a large\nnumber of quantum communication and computation protocols. While the efficiency\nof state-of-the-art photo-detectors is well below the desired limits, quantum\nstate measurements in trapped ions can be carried out with efficiencies\napproaching 100%. Here, we propose a method that can in principle achieve ideal\nphoton counting, by combining the techniques of photonic quantum memory and\nion-trap fluorescence detection: after mapping the quantum state of a\npropagating light pulse onto metastable collective excitations of a trapped\ncold atomic gas, it is possible to monitor the resonance fluorescence induced\nby an additional laser field that only couples to the metastable excited state.\nEven with a photon collection/detection efficiency as low as 10%, it is\npossible to achieve photon counting with efficiency approaching 100%.",
"arxiv_id": "quant-ph/0205196",
"authors": [
"A. Imamoglu"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevLett.89.163602",
"title": "High efficiency photon counting using stopped light",
"url": "https://arxiv.org/abs/quant-ph/0205196"
},
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