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

So Young Baek, Yoon Ho Kim

Research output: Contribution to journalArticlepeer-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 languageEnglish
Pages (from-to)3834-3839
Number of pages6
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume375
Issue number44
DOIs
Publication statusPublished - 2011 Oct 24
Externally publishedYes

Keywords

  • Quantum communication
  • Quantum information
  • Quantum state engineering

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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