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Quantum Information Processing

Erschienen in:

01.09.2018

Number state filtered coherent states

verfasst von: Nilakantha Meher, S. Sivakumar

Erschienen in: Quantum Information Processing | Ausgabe 9/2018

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Abstract

Number state filtering in coherent states leads to sub-Poissonian photon statistics. These states are more suitable for phase estimation when compared with the coherent states. Nonclassicality of these states is quantified in terms of the negativity of the Wigner function and the entanglement potential. Filtering of the vacuum from a coherent state is almost like the photon addition. However, filtering makes the state more resilient against dissipation than photon addition. Vacuum state filtered coherent states perform better than the photon-added coherent states for a two-way quantum key distribution protocol. A scheme to generate these states in multi-photon atom–field interaction is presented.

Vorheriger Artikel The norms of Bloch vectors and a trade-off relation of Svetlichny inequalities

Nächster Artikel A minimal set of measurements for qudit-state tomography based on unambiguous discrimination

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Titel: Number state filtered coherent states
verfasst von: Nilakantha Meher
S. Sivakumar
Publikationsdatum: 01.09.2018
Verlag: Springer US
Erschienen in: Quantum Information Processing / Ausgabe 9/2018
Print ISSN: 1570-0755
Elektronische ISSN: 1573-1332
DOI: https://doi.org/10.1007/s11128-018-1995-6

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