Detecting the relative phase between different frequency components of a photon using a three-level $\Lambda$ atom coupled to a waveguide

Abstract

We study the scattering of a single photon propagating along a waveguide in an arbitrary superposition state two frequencies with a single three-level $\Lambda$ atom in a superposition of two non-degenerate ground states where the atom is coupled to a waveguide. We find that the scattering depends on both the relative phase between the photon frequencies and the relative phase between the atomic ground states. Our results show that a three-level $\Lambda$ atom coupled to a waveguide can be used as photon phase filter that could detect the relative phase between the two frequencies of the photon superposition state.

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Cited by in corpus (1)

• Fast and robust production of quantum superposition states by the fractional shortcut to adiabaticity