Department of Physics & Astronomy
University of New Mexico

CQuIC Seminars

Quantum Communication with Coherent States of Light

Presented by Norbert Lutkenhaus, Institute for Quantum Computing

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)

3:30 pm, Thursday, December 13, 2018
Room 190, Physics & Astronomy
Northeast corner of Lomas and Yale, Albuquerque, New Mexico

Disability NoticeIndividuals with disabilities who need an auxiliary aid or service to attend or participate in P&A events should contact Sandra Ortiz (phone: 505-277-5900, email: sportiz@unm.edu) well in advance to ensure your needs are accomodated. Event handouts can be provided in alternative accessible formats upon request. Please contact Mrs. Ortiz if you need written information in an alternative format.

A schedule of talks within the Department of Physics and Astronomy is available on the P&A web site at http://physics.unm.edu/pandaweb/events/index.php