Artificial atoms can do more than atoms: Deterministic single photon subtraction from arbitrary light fields

Details Artificial atoms can do more than atoms: Deterministic single photon subtraction from arbitrary light fields Artificial atoms can do more than atoms: Deterministic single photon subtraction from arbitrary light fields

2011-03-07

arxiv.org/abs/1103.1319v1

Physics

Quantum Physics

4 pages, 4 figures

Scientific paper

We study the interplay of photons interacting with an artificial atom in the presence of a controlled dephasing. Such artifical atoms consisting of several independent scatterer can exhibit remarkable properties superior to single atoms with a prominent example being a superatom based on Rydberg blockade. We demonstrate that the induced dephasing allows for the controlled absorption of a single photon from an arbitrary incoming probe field. This unique tool in photon-matter interaction opens a way for building novel quantum devices and several potential applications like a single photon transistor, high fidelity n-photon counters, or for the creation of non-classical states of light by photon subtraction are presented.

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