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Title

Demonstration of a single-photon router in the microwave regime

AuthorsHoi, Io-Chun; Wilson, C.M.; Johansson, Göran; Palomaki, Tauno; Peropadre, Borja ; Delsing, Per
Issue Date2011
PublisherAmerican Physical Society
CitationPhysical Review Letters 107: 073601 (2011)
AbstractWe have embedded an artificial atom, a superconducting transmon qubit, in an open transmission line and investigated the strong scattering of incident microwave photons (∼6GHz). When an input coherent state, with an average photon number N 1 is on resonance with the artificial atom, we observe extinction of up to 99.6% in the forward propagating field. We use two-tone spectroscopy to study scattering from excited states and we observe electromagnetically induced transparency (EIT). We then use EIT to make a single-photon router, where we can control to what output port an incoming signal is delivered. The maximum on-off ratio is around 99% with a rise and fall time on the order of nanoseconds, consistent with theoretical expectations. The router can easily be extended to have multiple output ports and it can be viewed as a rudimentary quantum node, an important step towards building quantum information networks. © 2011 American Physical Society.
URIhttp://hdl.handle.net/10261/58129
DOI10.1103/PhysRevLett.107.073601
Identifiersdoi: 10.1103/PhysRevLett.107.073601
issn: 0031-9007
Appears in Collections:(CFMAC-IFF) Artículos
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