Quantum interference between two single photons of different microwave frequencies

Details Quantum interference between two single photons of different microwave frequencies Quantum interference between two single photons of different microwave frequencies

2011-12-08

arxiv.org/abs/1112.1943v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages and 3 figures

Scientific paper

We have measured quantum interference between two single microwave photons trapped in a superconducting resonator, whose frequencies are initially about 6 GHz apart. We accomplish this by use of a parametric frequency conversion process that mixes the mode currents of two cavity harmonics through a superconducting quantum interference device, and demonstrate that a two-photon entanglement operation can be performed with high fidelity.

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