Article ID Journal Published Year Pages File Type
1865089 Physics Letters A 2011 6 Pages PDF
Abstract

We report methods for preparation and tomographic reconstruction of an arbitrary single-photon path qubit. The arbitrary single-photon path qubit is prepared losslessly by passing the heralded single-photon state from spontaneous parametric down-conversion through variable beam splitter. Quantum state tomography of the single-photon path qubit is implemented by introducing path-projection measurements based on the first-order single-photon quantum interference. Using the state preparation and path-projection measurements methods for the single-photon path qubit, we demonstrate preparation and complete tomographic reconstruction of the single-photon path qubit with arbitrary purity.

► We report methods for preparation and tomographic reconstruction of an arbitrary single-photon path qubit. ► We implement path-projection measurements based on the first-order single-photon quantum interference. ► We demonstrate preparation and complete tomographic reconstruction of the single-photon path qubit with arbitrary purity.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Physics and Astronomy (General)
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