Heralded generation of multiphoton entanglement

Philip Walther; Markus Aspelmeyer; Anton Zeilinger

doi:10.1103/PhysRevA.75.012313

Heralded generation of multiphoton entanglement

Philip Walther
, Markus Aspelmeyer
, Anton Zeilinger

Publications: Contribution to journal › Article › Peer Reviewed

Abstract

We present a scheme, based only on linear optics and standard photon detection, that allows to generate heralded multiphoton entangled states of arbitrary photon number from spontaneous parametric downconversion (PDC) in the weak interaction regime. The scheme also works in the strong interaction regime, i.e., for the production of large photon numbers, when photon-number resolving detectors with nearly perfect quantum efficiency are used. In addition, the same setup can be used for quantum metrology as multiphoton interferometer with sensitivity at the Heisenberg limit.

Original language	English
Article number	012313
Number of pages	5
Journal	Physical Review A
Volume	75
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevA.75.012313
Publication status	Published - Jan 2007

Austrian Fields of Science 2012

103026 Quantum optics

Keywords

QUANTUM COMPUTATION
STATE
TELEPORTATION
OPERATIONS

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10.1103/PhysRevA.75.012313

Cite this

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abstract = "We present a scheme, based only on linear optics and standard photon detection, that allows to generate heralded multiphoton entangled states of arbitrary photon number from spontaneous parametric downconversion (PDC) in the weak interaction regime. The scheme also works in the strong interaction regime, i.e., for the production of large photon numbers, when photon-number resolving detectors with nearly perfect quantum efficiency are used. In addition, the same setup can be used for quantum metrology as multiphoton interferometer with sensitivity at the Heisenberg limit.",

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month = jan,

doi = "10.1103/PhysRevA.75.012313",

language = "English",

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AU - Zeilinger, Anton

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AB - We present a scheme, based only on linear optics and standard photon detection, that allows to generate heralded multiphoton entangled states of arbitrary photon number from spontaneous parametric downconversion (PDC) in the weak interaction regime. The scheme also works in the strong interaction regime, i.e., for the production of large photon numbers, when photon-number resolving detectors with nearly perfect quantum efficiency are used. In addition, the same setup can be used for quantum metrology as multiphoton interferometer with sensitivity at the Heisenberg limit.

KW - QUANTUM COMPUTATION

KW - STATE

KW - TELEPORTATION

KW - OPERATIONS

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DO - 10.1103/PhysRevA.75.012313

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JO - Physical Review A

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IS - 1

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ER -

Heralded generation of multiphoton entanglement

Abstract

Austrian Fields of Science 2012

Keywords

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