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Center for Astrophysics Research and Technologies Seminar Series Information


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Quantum Communication with Coherent States of Light

Thursday December 13, 2018
3:30 pm

 Presenter:  Norbert Lutkenhaus, Institute for Quantum Computing
 Series:  CQuIC Seminars
 Abstract:  Quantum Communication Protocols offer either qualitative advantages (Quantum Key Distribution) or quantitative advantages (Quantum Communication Protocols like Quantum Fingerprinting). I will outline the different type of tasks with quantum advantages and address the question how we can realize the quantum advantage by resorting to tools that are readily available for implementation using simple tools like coherent states (laser pulses) and linear optics. Our goal is to drive research towards delivering protocols with a quantitative advantage that can be practically implemented and that address a real-world problem.

Relevant publications from our group: (reverse chronological order)

A. Marwah, N. Lütkenhaus; Characterisation of Gram matrices of multi-mode coherent states, arXiv: 1809.05187

B. J.M. Arrazola, D. Touchette; “Quantum advantage on information leakage for equality”, arXiv1607.07516

C. B. Lovitz, N. Lütkenhaus, Families of quantum finger printing protocols, Phys Rev A 97 032340 (2018)

D. B. Lovitz, D. Touchette, N. Lütkenhaus, Practical quantum appointment scheduling, Phys Rev A 97 042320 (2018)

E. J.M. Arrazola, M Karasamanis, N. Lütkenhaus, Practical quantum retrieval games, Phys Rev A 93 062311

F. Feihu Xu,Juan Miguel Arrazola, Kejin Wei, Wenyuan Wang, Pablo Palacios-Avila, Chen Feng, Shihan Sajeed, Norbert Lütkenhaus, Hoi-Kwong Lo, Experimental quantum fingerprinting with weak coherent states, Nature Communications 6, 8735, (2015)]

G. J. M. Arrazola, N. Lütkenhaus, Quantum Communication with Coherent States and Linear Optics, Phys. Rev. A, 90, 042335

H. J.M. Arrazola, N. Lütkenhaus, Quantum fingerprinting with coherent states and a constant mean number of photons, Phys. Rev. A, 89, 062305 (2014)
 Host:  Akimasa Miyake
 Location:  PAIS-2540, PAIS

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