Below you can find information about QIP 2019 (January 14-18, 2019, University of Colorado Boulder), my Research & Publications, as well as the Teaching I have done.

Together with Graeme Smith, I'm organizing the conference QIP 2019, which will be held January 14-18, 2019 at University of Colorado Boulder. QIP is the main conference in quantum information theory with ~500 participants, featuring the research highlights from the past year. The program committee chair for QIP 2019 is Matthias Christandl.

I am a Postdoctoral Research Associate at JILA, University of Colorado Boulder, in the quantum information theory group of Graeme Smith. My main research interests lie in quantum information theory and quantum Shannon theory. In particular, I am interested in the mathematical properties of entropic quantities and quantum channels, with the goal of using these properties to gain a better understanding of information-theoretic tasks such as quantum channel coding, entanglement distillation, source coding, and state redistribution. An example of this is my PhD thesis, in which I studied relative entropies in order to refine optimal rates of information-processing tasks through analyzing their second order asymptotics and deriving strong converse theorems for them.

Have a look at my academic CV.

- M. Christandl, F.L., C. Majenz, G. Smith, F. Speelman, M. Walter:

*"Asymptotic performance of port-based teleportation"*

arXiv preprint, arXiv:1809.10751, 2018. - J. Bausch, F.L.:

*"Quantum Codes from Neural Networks"*

arXiv preprint, arXiv:1806.08781, 2018.

For openly accessible versions of the articles below, please follow the respective arXiv links.

- F.L., D. Leung, G. Smith:

*"Dephrasure channel and superadditivity of coherent information"*

Physical Review Letters**121**(16), 160501, 2018. arXiv:1806.08327 [quant-ph] - F.L., N. Datta, G. Smith:

*"Useful states and entanglement distillation"*

IEEE Transactions on Information Theory**64**(7), pp. 4689-4708, 2018. arXiv:1701.03081 [quant-ph] - F.L., D. Leung, G. Smith:

*Quantum and private capacities of low-noise channels"*

Physical Review Letters**120**(16), 160503, 2018. arXiv:1705.04335 [quant-ph] - F.L., Eneet Kaur, N. Datta, M.M. Wilde:

*Approaches for approximate additivity of the Holevo information of quantum channels*

Physical Review A**97**(1), 012332, 2018. arXiv:1709.01111 [quant-ph] - F.L., C. Rouzé, N. Datta:

*"Data processing for the sandwiched Rényi divergence: a condition for equality"*

Letters in Mathematical Physics**107**(1), pp. 61-80, 2017. arXiv:1604.02119 [quant-ph,math-ph] - S. Beigi, N. Datta, F.L.:

*"Decoding quantum information via the Petz recovery map"*

Journal of Mathematical Physics**57**, 082203, 2016. arXiv:1504.04449 [quant-ph] - F.L., M.M. Wilde, N. Datta:

*"Strong converse theorems using Rényi entropies"*

Journal of Mathematical Physics**57**, 082202, 2016. arXiv:1506.02635 [quant-ph] - F.L., N. Datta:

*"Second order asymptotics of visible mixed quantum source coding via universal codes"*

IEEE Transactions on Information Theory**62**(7), pp. 4347-4355, 2016. arXiv:1407.6616 [quant-ph] - N. Datta, F.L.:

*"Second-order asymptotics for source coding, dense coding and pure-state entanglement conversions"*

IEEE Transactions on Information Theory**61**(1), pp. 582-608, 2015. arXiv:1403.2543 [quant-ph]

See also: Erratum , IEEE Transactions on Information Theory**64**(4), pp. 2625-2627, 2017. - N. Datta, F.L.:

*"A limit of the quantum Rényi divergence"*

Journal of Physics A: Mathematical and Theoretical**47**, 045304, 2014. arXiv:1308.5961 [quant-ph]

See also listings on arXiv.org and Google Scholar.

*"Dephrasure channel and superadditivity of coherent information"*

presented at Beyond IID in Information Theory, Cambridge, UK, July 2018. (contributed)*"Quantum and private capacities of low-noise channels"*

presented at IEEE Information Theory Workshop, Kaohsiung, Taiwan, November 2017. (invited)*"Useful states and entanglement distillation"*

presented at Beyond IID in Information Theory, Singapore, July 2017. (contributed)*"Degradable states and one-way entanglement distillation"*

presented at ISIT 2017, Aachen, Germany, June 2017. (contributed)*"Strong converse theorem for state redistribution using Rényi entropies"*

presented at ISIT 2016, Barcelona, Spain, July 2016. (contributed)*"Second order asymptotics of quantum mixed source coding"*

presented at QIPC 2015, Leeds, United Kingdom, September 2015. (contributed)*"Second Order Asymptotics in Quantum Information Theory: Quantum Source Coding"*

presented at Young Researchers in Mathematics 2015, Oxford, United Kingdom, August 2015. (invited)*"Strong converse theorems using Rényi entropies"*

presented at Beyond IID in Information Theory, Banff, Canada, July 2015. (invited)

*"Port‐based teleportation in arbitrary dimension: Asymptotics and a converse bound"*

presented at Beyond IID in Information Theory, Cambridge, UK, July 2018.*"Bounds on quantum channel capacities from approximate additivity of channel information quantities"*

presented at QIP 2018, Delft, Netherlands, January 2018.*"Quantum and private capacities of low-noise channels"*

presented at QIP 2018, Delft, Netherlands, January 2018.*"Degradable states and one-way entanglement distillation"*

presented at QIP 2017, Seattle, USA, January 2017.*"Degradable states: Upper bounds on one-way distillable entanglement and quantum capacity"*

presented at Beyond IID in Information Theory, Barcelona, Spain, July 2016.*"Strong converse theorems using Rényi entropies"*

presented at QIP 2016, Banff, Canada, January 2016.*"A limit of the quantum Rényi divergence"*

presented at QIP 2014, Barcelona, Spain, February 2014.

*"Dephrasure channel and superadditivity of coherent information"*

IQOQI Seminar, Austrian Academy of Sciences & University of Vienna, Austria, September 2018.

Stanford Seminar, Stanford University, USA, June 2018.*"Asymptotic performance of port-based teleportation"*

MIT Seminar, Massachussetts Institute of Technology, USA, May 2018.

PI Seminar, Perimeter Institute for Theoretical Physics, Canada, May 2018.

IQC Colloquium talk, Institute for Quantum Computing, University of Waterloo, Canada, April 2018.*"Useful states and entanglement distillation, and a toy channel exhibiting superadditivity of coherent information"*

QuSoft seminar, QuSoft, University of Amsterdam, Netherlands, January 2018.*"Bounds on quantum channel capacities from approximate additivity of channel information quantities"*

Analysis in QIT, Junior research seminar, Institut Henri Poincaré, Paris, France, September 2017.*"Useful states and entanglement distillation"*

IQI Seminar, Caltech, USA, July 2017.*"On the quantum capacity of the qubit depolarizing channel"*

LSU group seminar, Louisiana State University, USA, May 2017.

CQIF group seminar, University of Cambridge, UK, April 2017.*"Relative entropies and their use in quantum information theory"*

LSU group seminar, Louisiana State University, USA, May 2017.

JILA Quantum theory group meeting, University of Colorado Boulder, USA, March 2017.*"Equality condition in the data processing inequality for the quantum relative entropy"*

CAKE seminar, University of Cambridge, Cambridge, United Kingdom, February 2016.*"Strong converse theorems using Rényi entropies"*

Visit at IBM Thomas J. Watson Research Center, Yorktown Heights, USA, January 2016.

- Michaelmas term 2015: Exercise class for the course "Quantum Information Theory" lectured by Will Matthews (graduate level course)
- Michaelmas term 2014: Exercise class for the course "Quantum Information Theory" lectured by Will Matthews (graduate level course)
- Michaelmas term 2013: Exercise class for the course "Quantum Information Theory" lectured by Nilanjana Datta (graduate level course)