Shaping frequency entangled qudits

Bernhard, Christof; Bessire, Bänz; Feurer, Thomas; Stefanov, André (2013). Shaping frequency entangled qudits. Physical review. A - atomic, molecular, and optical physics, 88(3), 032322. American Physical Society 10.1103/PhysRevA.88.032322

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We demonstrate the creation, characterization, and manipulation of frequency-entangled qudits by shaping the energy spectrum of entangled photons. The generation of maximally entangled qudit states is verified up to dimension d=4 through tomographic quantum-state reconstruction. Subsequently, we measure Bell parameters for qubits and qutrits as a function of their degree of entanglement. In agreement with theoretical predictions, we observe that for qutrits the Bell parameter is less sensitive to a varying degree of entanglement than for qubits. For frequency-entangled photons, the dimensionality of a qudit is ultimately limited by the bandwidth of the pump laser and can be on the order of a few millions.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Applied Physics

UniBE Contributor:

Bernhard, Christof; Bessire, Bänz; Feurer, Thomas and Stefanov, André

Subjects:

600 Technology > 620 Engineering

ISSN:

1050-2947

Publisher:

American Physical Society

Language:

English

Submitter:

Martin Frenz-Lips

Date Deposited:

16 Sep 2014 09:14

Last Modified:

12 Sep 2017 05:46

Publisher DOI:

10.1103/PhysRevA.88.032322

BORIS DOI:

10.7892/boris.52969

URI:

https://boris.unibe.ch/id/eprint/52969

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