Preparation and tomographic reconstruction of an arbitrary single-photon path qubit

So Young Baek; Yoon Ho Kim

doi:10.1016/j.physleta.2011.08.064

Preparation and tomographic reconstruction of an arbitrary single-photon path qubit

So Young Baek, Yoon Ho Kim

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

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.

Original language	English
Pages (from-to)	3834-3839
Number of pages	6
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	375
Issue number	44
DOIs	https://doi.org/10.1016/j.physleta.2011.08.064
Publication status	Published - 2011 Oct 24
Externally published	Yes

Keywords

Quantum communication
Quantum information
Quantum state engineering

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1016/j.physleta.2011.08.064

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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.",

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AU - Kim, Yoon Ho

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N2 - 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.

AB - 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.

KW - Quantum communication

KW - Quantum information

KW - Quantum state engineering

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