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, 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: |
05 Dec 2022 14:34 |
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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