New applications of coherent states in quantum information theory | Vidéo | Carmin.tv

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New applications of coherent states in quantum information theory

By Giulio Chiribella

Appears in collection : Coherent states and their applications: a contemporary panorama / Etats cohérents et leurs applications : un panorama contemporain

Coherent states have been long known for their applications in quantum optics and atomic physics. In recent years, a number of new applications have emerged in the area of quantum information theory. In this talk I will highlight two such applications. The first is the comparison between classical and quantum strategies to process information. Byproducts of this comparison are benchmarks that can be used to certify quantum advantages in realistic experiments, fundamental relations between quantum copy machines and precision measurements, and theoretical tools for security proofs in quantum cryptography. The second application is the simulation of unitary gates in quantum networks. Here the task is to simulate a given set of unitary gates using gates in another set, a general problem that includes as special cases the simulation of charge conjugate dynamics and the emulation of an unknown unitary gate. The problem turns out to have useful connections with the ultimate precision limits of quantum metrology.

Information about the video

Date of recording 15/11/2016
Date of publication 23/11/2016
Institution CIRM
Licence CC BY NC ND
Language English
Audience Researchers
Director(s) Guillaume Hennenfent
Format MP4

Citation data

DOI 10.24350/CIRM.V.19090503
Cite this video Chiribella, Giulio (15/11/2016). New applications of coherent states in quantum information theory. CIRM. Audiovisual resource. DOI: 10.24350/CIRM.V.19090503
URL https://dx.doi.org/10.24350/CIRM.V.19090503

Domain(s)

Quantum Physics

Bibliography

Chiribella, G., & Ebler, D. (2016). Optimal quantum networks and one-shot entropies. New Journal of Physics, 18, 093053 - http://dx.doi.org/10.1088/1367-2630/18/9/093053
Chiribella, G., & Adesso, G. (2014). Quantum Benchmarks for Pure Single-Mode Gaussian States. Physical Review Letters. 112(1), 010501 - https://doi.org/10.1103/PhysRevLett.112.010501
Yang, Y., Chiribella, G., & Adesso, G. (2014). Certifying quantumness: Benchmarks for the optimal processing of generalized coherent and squeezed states. Physical Review A, 90(4), 042319 - https://doi.org/10.1103/PhysRevA.90.042319
Chiribella, G., & Xie, J. (2013). Optimal design and quantum benchmarks for coherent state ampliers. Physical Review Letters, 110(21), 213602 - https://doi.org/10.1103/PhysRevLett.110.213602

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