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Swiss National Science Foundation (SNSF)

Wildhainweg 3P.O. Box

CH-3001 Bern

Phone +41 31 308 22 22

English title | Information-theoretic methods for physics |
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Applicant | Renner Renato |

Number | 135048 |

Funding scheme | Project funding (Div. I-III) |

Research institution | Institut für Theoretische Physik ETH Zürich |

Institution of higher education | ETH Zurich - ETHZ |

Main discipline | Theoretical Physics |

Start/End | 01.04.2011 - 31.03.2014 |

Approved amount | 454'124.00 |

Discipline |
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Theoretical Physics |

Information Technology |

quantum information theory; thermodynamics; entropies; statistical mechanics

Lead |
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Lay summary |

Information cannot exist without physical information carriers. For example, when we speak, information is carried by sound waves, when we write, it is represented as ink on a piece of paper, or when we work with a computer, information may take the form of magnetization on the surface of a hard drive. Consequently, the storage and processing of information is ultimately a physical process.That information is always physical has been pointed out by several physicists and information theorists, including for example Rolf Landauer and Richard Feynman. They concluded that the possibilities and limitations of information processing are ultimately determined by the physical laws governing the systems that carry the information. In particular, if the information-carrying systems are quantum-mechanical, a quantum-mechanical treatment of information becomes necessary. This insight eventually led to the development of Quantum Information Theory as a novel research discipline. One of its main aims is to study how the laws of information processing depend on the laws of quantum physics. The idea underlying this project is, so to speak, to go in the opposite direction, i.e., to study physical systems from an information-theoretic perspective. In particular, we plan to investigate to what extent basic properties of information processing determine the behavior of physical systems. This approach is particularly suitable in the context of thermodynamics and statistical mechanics, where the use of information-theoretic notions already has a long tradition, dating back to the work of Maxwell and Szilard. Here, a basic and in general still open question concerns the thermalization of systems, i.e., why and how fast a physical system reaches its thermal equilibrium. This question can, for example, be addressed using techniques that have been developed recently in information theory for the study of randomness. There is a variety of areas in physics where information plays a crucial role, ranging from applied problems such as state tomography to foundational questions, e.g., concerning the information-content of physical theories. We expect that, in this project, we can establish information theory as a tool and demonstrate its use to the study of such problems. |

Direct link to Lay Summary | Last update: 21.02.2013 |

Name | Institute |
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Name | Institute |
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Publication |
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A decoupling approach to classical data transmission over quantum channels |

Device-independent quantum key distribution with local Bell test |

One-Shot Decoupling |

Smooth max-information as one-shot generalization for mutual information |

The ultimate physical limits of privacy |

Chain Rules for Smooth Min- and Max-Entropies |

Decoupling with unitary approximate two-designs |

Directed quantum communication |

Efficient one-way secret-key agreement and private channel coding via polarization |

Efficient Polar Coding of Quantum Information |

Efficient quantum channel coding scheme requiring no preshared entanglement |

Holonomic quantum computing in symmetry-protected ground states of spin chains |

One-shot lossy quantum data compression |

Quantum information: From bits to solids |

Security of continuous-variable quantum key distribution against general attacks |

Security of two-way quantum key distribution |

Truly Random Number Generation: An Example |

Achieving the Capacity of any DMC using only Polar Codes |

An intuitive proof of the data processing inequality |

Free randomness can be amplified |

Generalized Entropies |

Information security in a quantum world |

Is a system's wave function in one-to-one correspondence with its elements of reality? |

One-shot classical data compression with quantum side information and the distillation of common randomness or secret keys |

One-Shot Classical-Quantum Capacity and Hypothesis Testing |

Reliable Quantum State Tomography |

The fridge gate |

Tight finite-key analysis for quantum cryptography |

Tsirelson's bound from a Generalised Data Processing Inequality |

Experimental Bound on the Maximum Predictive Power of Physical Theories |

Impossibility of growing quantum bit commitments |

No extension of quantum theory can have improved predictive power |

Key recycling in authentication |

Polar codes for private and quantum communication over arbitrary channels |

The completeness of quantum theory for predicting measurement outcomes |

Group / person | Country |
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Types of collaboration |
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University of Oxford | Great Britain and Northern Ireland (Europe) |

- in-depth/constructive exchanges on approaches, methods or results - Publication |

University of Cambridge | Great Britain and Northern Ireland (Europe) |

- in-depth/constructive exchanges on approaches, methods or results - Publication |

University of Geneva | Switzerland (Europe) |

- in-depth/constructive exchanges on approaches, methods or results - Publication - Exchange of personnel |

Massachusetts Institute of Technology | United States of America (North America) |

- in-depth/constructive exchanges on approaches, methods or results - Publication |

CWI Amsterdam | Netherlands (Europe) |

- in-depth/constructive exchanges on approaches, methods or results |

NU Singapore | Singapore (Asia) |

- in-depth/constructive exchanges on approaches, methods or results - Exchange of personnel |

University of Waterloo | Canada (North America) |

- in-depth/constructive exchanges on approaches, methods or results |

ID Quantique | Switzerland (Europe) |

- Industry/business/other use-inspired collaboration |

University College London | Great Britain and Northern Ireland (Europe) |

- in-depth/constructive exchanges on approaches, methods or results - Publication |

Perimeter Institute for Theoretical Physics | Canada (North America) |

- in-depth/constructive exchanges on approaches, methods or results - Publication - Exchange of personnel |

Title | Type of contribution | Title of article or contribution | Date | Place | Persons involved |
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APS March Meeting 2013 | Talk given at a conference | The freedom of choice assumption and its implications | 18.03.2013 | Baltimore, United States of America | Renner Renato; |

Quo Vadis Quantum Physics Workshop | Talk given at a conference | On the completeness of quantum theory | 25.02.2013 | Natal, Brazil | Renner Renato; |

QSIT meeting 2013 | Talk given at a conference | Quantum information theory (invited tutorial) | 30.01.2013 | Arosa, Switzerland | Renner Renato; |

Topical Research Meetings on Physics: Quantum technologies --- taking concepts through to implementations | Talk given at a conference | Quantum cryptography: towards device-independence | 17.12.2012 | London, Great Britain and Northern Ireland | Renner Renato; |

WECIQ 2012 | Talk given at a conference | Smooth entropy | 09.10.2012 | Fortaleza, Brazil | Renner Renato; |

SPIE Security and Sensing Conference | Talk given at a conference | Device-independent security for quantum cryptography | 24.09.2012 | Edinburgh, Great Britain and Northern Ireland | Renner Renato; |

QUANT2012 Workshop | Talk given at a conference | Towards security proofs for practical quantum cryptography | 28.08.2012 | Los Angeles, United States of America | Renner Renato; |

Workshop on Quantum Physics of Information | Talk given at a conference | On the notion of free choice in physics | 27.08.2012 | Shanghai, China | Renner Renato; |

International Conference on Information Theoretic Security | Talk given at a conference | Security Proof of Two-Way Quantum Key Distribution Protocols with Partial Device Independence | 15.08.2012 | Montreal, Canada | Beaudry Normand; |

International Congress on Mathematical Physics | Talk given at a conference | A theory of information for physics | 06.08.2012 | Aalborg, Denmark | Renner Renato; |

11th International Conference on Quantum Communication, Measurement and Computing | Talk given at a conference | Reliable quantum state tomography | 30.07.2012 | Vienna, Austria | Renner Renato; |

imsAPRM statistics conference | Talk given at a conference | Quantum State Tomography | 02.07.2012 | Tsukuba, Japan, Japan | Faist Philippe; |

Workshop on Quantum Information Theory | Talk given at a conference | Is a system’s wave function in one-to-one correspondence with its elements of reality? | 01.07.2012 | Seefeld, Austria | Renner Renato; |

CTIC Workshop on Quantum Information Science | Talk given at a conference | Free randomness amplification | 21.05.2012 | Beijing, China | Renner Renato; |

International Workshop: From Quantum Foundations to Quantum Fluids | Talk given at a conference | No extension of quantum theory can have improved predictive power | 04.04.2012 | Toulouse, France | Renner Renato; |

Young Researchers in Mathematics Conference | Talk given at a conference | Exploiting the quantum laws | 02.04.2012 | Bristol, Great Britain and Northern Ireland | Renner Renato; |

Quantum Mechanics: From Foundations to Quantum Information Science | Talk given at a conference | On the non-extendibility of quantum theory | 27.02.2012 | Center for Interdisciplinary Research, Bielefeld, Germany | Renner Renato; |

Colloquium of the Dipartimento di Fisica | Individual talk | Is quantum theory informationally complete? | 09.02.2012 | Universita di Pavia, Pavia, Italy | Renner Renato; |

QSIT meeting 2012 | Talk given at a conference | Quantum state tomography | 01.02.2012 | Arosa, Switzerland, Switzerland | Faist Philippe; |

NCCR QSIT Student School | Talk given at a conference | Quantum information (tutorial) | 30.01.2012 | Arosa, Switzerland | Renner Renato; |

4th Winter School on Practical Quantum Cryptography | Talk given at a conference | Theoretical and practical security in quantum cryptography (keynote speech) | 23.01.2012 | Les Diablerets, Switzerland | Renner Renato; |

QIP 2012 | Talk given at a conference | Quantum Polar Coding | 12.12.2011 | Montreal, Canada, Canada | Renes Joe; |

CHIST-ERA Meeting on Device-Independent Quantum Information Processing | Talk given at a conference | Free randomness amplification | 24.11.2011 | Geneva, Switzerland | Renner Renato; |

Quantum Information: Codes, Geometry and Random Structures | Talk given at a conference | Quantum information processing as classical processing of complementary information | 24.10.2011 | Centre de Recherches Mathematiques, Montreal, Canada | Renes Joe; |

Workshop on Quantum Information in Quantum Many-body Physics | Talk given at a conference | An information-theoretic view on thermalization | 18.10.2011 | Centre de recherches mathématiques, Université de Montréal, Canada | Renner Renato; |

Annual DoctoralWorkshop on Mathematical and Engineering Methods in Computer Science (MEMICS) | Talk given at a conference | Information security in a quantum world | 14.10.2011 | Lednice, Czech Republic | Renner Renato; |

Workshop on Quantum Computer Science | Talk given at a conference | Free randomness amplification | 04.10.2011 | Montreal, Canada | Renner Renato; |

HIPERCOM Workshop | Talk given at a conference | Entanglement witnessing and cryptography using uncertainty relations | 27.09.2011 | Paris, France | Renner Renato; |

QIPC School 2011 | Talk given at a conference | Quantum information theory (invited tutorial) | 02.09.2011 | Diavolezza, Switzerland, Switzerland | Renner Renato; |

QKD Summer School | Talk given at a conference | Information-theoretical security of QKD | 25.07.2011 | Institute for Quantum Computing, Waterloo, Canada | Renner Renato; |

QKD Post Processing Workshop | Talk given at a conference | Privacy amplification and composable security | 06.07.2011 | Vienna, Austria | Renner Renato; |

Canadian Summer School on Quantum Information | Talk given at a conference | Quantum cryptography | 06.06.2011 | Sherbrooke, Canada | Renner Renato; |

5th International Conference on Information Theoretic Security | Talk given at a conference | Quantum-resilient randomness extraction | 21.05.2011 | Amsterdam, Netherlands | Renner Renato; |

QCS Project Workshop | Talk given at a conference | The decoupling theorem | 20.05.2011 | University of Latvia, Riga, Latvia | Renner Renato; |

KCIK Symposium 2011 | Talk given at a conference | The uncertainty principle in the presence of quantum memory | 14.05.2011 | Sopot, Poland | Renner Renato; |

Conference on Conceptual Foundations and Foils for Quantum Information Processing | Talk given at a conference | How fundamental is the uncertainty principle? | 09.05.2011 | Perimeter Institute, Waterloo , Canada | Renner Renato; |

Title | Date | Place |
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Beyond i.i.d. in information theory | 08.01.2013 | Cambridge, United Kingdom, Great Britain and Northern Ireland |

First Workshop on Quantum Information and Foundations of Thermodynamics | 09.08.2011 | Zurich, Switzerland |

Communication | Title | Media | Place | Year |
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Media relations: print media, online media | Absolut Sicher | Schweiz am Sonntag | German-speaking Switzerland | 2014 |

Media relations: print media, online media | Die Lichtteilchen sind auf spukhafte Weise verknüpft | Sonntagszeitung | German-speaking Switzerland | 2014 |

Media relations: radio, television | Nicht zu knacken – Neue Verschlüsselungstechnik aus der Schweiz | Radio SRF 2 | German-speaking Switzerland | 2014 |

Media relations: radio, television | Science in Action | BBC Radio | International | 2014 |

Talks/events/exhibitions | NGW Vortrag | German-speaking Switzerland | 2013 |

Talks/events/exhibitions | Public lecture: Gambling against the second law of thermodynamics | International | 2013 |

Talks/events/exhibitions | Quantentechnologie für und gegen Spione | German-speaking Switzerland | 2013 |

Talks/events/exhibitions | Uni an der Kantonsschule Büelrain | German-speaking Switzerland | 2013 |

Talks/events/exhibitions | Andre Aisenstadt Chair Lecture, | International | 2011 |

Talks/events/exhibitions | Tagung der Konferenz Schweizerischer Gymnasialrektorinnen und Gymnasialrektoren 2011 | Western Switzerland | 2011 |

Title | Year |
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Andre Aisenstadt Chair | 2011 |

Number | Title | Start | Funding scheme |
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119868 | Information-theoretic methods for physics | 01.04.2008 | Project funding (Div. I-III) |

153296 | Information-theoretic approach to thermodynamics | 01.04.2015 | Project funding (Div. I-III) |

The main motivation behind this project is to improve our understanding of the inherent connection between physics and information. We intend to establish this connection on a technical level, so that information-theoretic methods can be applied to the study of problems in physics, particularly in the area of thermodynamics and statistical mechanics. For this, we will use novel information-theoretic approaches, such as the smooth entropy calculus as well as the decoupling technique.

Swiss National Science Foundation (SNSF)

Wildhainweg 3P.O. Box

CH-3001 Bern

Phone +41 31 308 22 22

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