Upcoming QuPa Days

Next Meeting
3 May 2018
Location: Institut Henri Poincaré (amphi Darboux)

09:45 - 10:20 COFFEE
10:20 - 11:00 Dominic Horsman (Grenoble) How to engineer a quantum computer
11:00 - 11:40 Thierry Debuisschert (Thales) Achievements and Perspectives of Quantum Sensing
LUNCH
14:00 - 14:40 Bruno Laburthe-Tolra (Paris 13) Some aspects of quantum simulation using cold atoms
14:40 - 15:20 Carlo Maria Scandolo (Oxford) Microcanonical thermodynamics in general physical theories
15:20 - 15:50 COFFEE
15:50 - 16:30 Anupam Prakash (IRIF)
16:30 - 17:10 Giacomo Mauro D'Ariano (Pavia) Causality re-established


Past QuPa Days

8 December 2016
Location: Institut Henri Poincaré (salle 314)

09:45 - 10:20 COFFEE
10:20 - 11:00 Frédéric Grosshans (LAC) Using number theory to improve Shor factoring
11:00 - 11:40 Simone Felicetti (MPQ) Fast-modulated couplings : Quantum Communication and Quantum Simulation of the ultrastrong coupling regime
LUNCH
14:20 - 15:00 Omar Fawzi (ENS Lyon) Entropy Accumulation
15:00 - 15:40 Mattia Walschaers (LKB) Statistical Signatures of Boson Sampling
15:40 - 16:10 COFFEE
16:10 - 16:50 Jean-François Roch (LAC) Spin-based magnetic sensing using solid-state artificial atoms
16:50 - 17:30 Tom Douce (LIP6) Continuous Variables Instantaneous Quantum Computing is hard to sample


7 July 2016
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Talks
7-8 December 2015
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Talks
  • Entanglement for noisy channel coding Omar Fawzi (ENS Lyon)
  • Derandomizing quantum circuits with measurement based unitary designs Damian Markham (LTCI Telecom ParisTech)
  • A direct approach to measurement based quantum computing Giulia Ferrini (Mainz)
  • TBA Damian Pitalua Garcia (IRIF UP7)
  • Experimental quantum fingerprinting Juan Miguel Arrazola (CQT Singapore)
  • Quantum fingerprinting with coherent states for multiple clients Niraj Kumar (IRIF / LTCI)
  • Breaking symmetric cryptosystems using Simon's algorithm Marc Kaplan (LTCI Telecom ParisTech)
  • Arbitrary long relativistic bit commitment André Chailloux (INRIA)
  • Quantum theory as a critical regime of language dynamics Alexei Grinbaum (CEA)
  • A superconducting magnetometer enhanced by quantum error correction David Herrera Marti (CQT Singapore)
  • A QKD protocol for qudits using homogeneous Bell inequalities Zoe Amblard (U. Limoges)
4th June 2015

Talks
  • Attack strategies for position-based quantum cryptography based on the Clifford Hierarchy  Kaushik Chakraborty (INRIA)
  • Spectral thresholding quantum tomography for low rank states  Christina Butucea (U. Paris-Est)
  • Quantum Circuits for the Unitary Permutation Problem  Simon Perdrix (LORIA)
  • Experimental on-demand recovery of entanglement by local operations  Adeline Orieux (Telecom ParisTech)
  •  Observation of detection-dependent multi-photon coherence times  Young-Sik Ra (U. Paris 6)
  •  A Computer Science Anatomy of Regge Calculus  Zizhu Wang (U. Libre Bruxelles)
4th December 2014

Talks
  • Local tests of global entanglement and a counterexample to the generalized area law  Daniel Nagaj (Slovak Ac. Sci)
  • Random diagonal-unitary matrices and their applications in QIP  Yoshifumi Nakata (Uni Hannover)
  • Quantum conditional mutual information and approximate Markov chains  Omar Fawzi (ENS Lyon)
  • On the power of classically controlled quantum computing  Elham Kashefi (CNRS-LTCI)
  • Quantum memory for vector beams of light  Valentina Parigi  (LKB)
  • Extensions to the Wigner inequality for high-loss experimental scenarios  Bill Plick (Telecom ParisTech)
27th March 2014

Talks
  • Which-way experiment with an internal degree of freedom Konrad Banaszek (U. Warsaw)
  • Continuous Discretization of Infinite Dimensional Hilbert Spaces or Le Charm Discret du Continuum Perola Milman (CNRS, UP7)
  • Dimension of physical systems, information processing, and thermodynamics Marc Kaplan (LTCI, Telecom ParisTech)
  • Multi-user entanglement distribution at telecom wavelength Isabelle Zaquine (TPT)
  • A Combinatorial Approach to Nonlocality and Contextuality Anthony Leverrier (INRIA)
  • Verifying pseudorandomness with photons Peter Turner (U. Bristol)
19th September 2013

Talks
  • Polynomial Invariants of Three-qubit systems, Markus Grassl (CQT/NU Singapore)
  • Cluster states generation and manipulation with femtosecond optical frequency combs, Nicolas Treps (LKB / Univ Paris 6)
  • Universal scheme for violation of local realism from quantum advantage in one-way communication complexity, Michal Horodecki (Univ of Gdansk)
  • Decoding color codes by projection onto surface codes, Nicolas Delfosse (LIX / Ecole Polytechnique)
  • Quantum Complexity of Matrix Multiplication, Francois Le Gall (Univ Tokyo)
  • Direct measurement of the van der Waals interaction between two Rydberg atoms, Thierry Lahaye (Institut d'Optique)  
8-10 April 2013 
Workshop on Physics and Information 2013 
30th October 2012 

Talks
  • 'Quantum nonlocality based on finite-speed causal influences leads to superluminal signaling' Stefano Pironio (ULB)
  • 'Compact quantum circuits from one-way quantum computatio' Raphael Dias Silva (UFF / U. Edinburgh)
  • 'Photonic quantum information: open challenges'John Rarity (U. Bristol)
  • 'Analyzing quantum coin-flipping protocols using optimization techniques.' Jamie Sikora (LIAFA)
  • 'Optical hybrid quantum information : the example of a novel trustworthy witness for single-photon entanglement' Julien Laurat (LKB)
  • 'Thinking outside the sphere - using non-quantum states as variables in classical simulation algorithms' Shashank Virmani (U. Strathclyde)
28th / 29th June 2012 
(Joint LARSIM / QuPa workshop on foundations)

Talks 
  • 'Bell Inequalities and Computation' Dan Browne (University College London)
  • 'Simulating equatorial measurements with finite expected communication cost' Marc Kaplan (LTCI, CNRS and Télécom ParisTech)
  • 'Adversarial entanglement verification in realistic settings'Thomas Lawson (LTCI, CNRS and Télécom ParisTech)
  • 'Can there be randomness in quantum coin tosses involving beam splitters? On the relationship between quantum randomness and Turing computability' Karl Svozil (Technical University of Vienna)
  • 'On the Limits of Physical Computation' Jeffrey Barrett (University of California in Irvine)
  • 'Canonical complementarity, non-locality and exponential speedup in generalized process theories' Bob Coecke (University of Oxford)
  • 'The Principle of Finite Information Density' Gilles Dowek (INRIA)
  • 'Causal Graph Dynamics' Pablo Arrighi (Université de Grenoble)
  • 'Aaronson's No Supersearch Principle: Its Meaning for Physics and Complexity theory' Maël Pégny (Université Paris I and LARSIM, CEA-Saclay)
  • 'The Computational Power of Experiments in Physics' José Félix Costa (Technical University of Lisbon)
  • 'Is the 'verification problem' a true problem for hypercomputation?' Florent Franchette (Université Paris I)
  • 'Comparing analog models of computation to digital models of computation' Olivier Bournez (Ecole Polytechnique)
4th / 5th April 2012 
(Joint LARSIM / QuPa workshop on foundations)

Talks 
  • 'Tsirelson's bound from a Generalised Data Processing Inequality' Oscar Dahlsten (University of Oxford)
  • 'Symmetry constraints on temporal order in measurement-based quantum computation' Robert Raussendorf (University of British Columbia)
  • 'Comparing two explanations for qubits' Matthew Pusey (Imperial College London)
  • 'Kant and quantum mechanics: a middle way between the ontic and epistemic approaches' Michel Bitbol (CREA, CNRS-Ecole Polytechnique)
  • 'Detector efficiency and communication complexity' Virginie Lerays (LRI, Université Paris Sud)
  • 'On non-linear extensions of quantum mechanics' Damian Markham (LTCI, CNRS-Télécom ParisTech)
  • 'Entanglement distribution with quantum communication' Kavan Modi (University of Oxford and CQT, Singapore)
  • 'Physics from Informational Principles' Giacomo Mauro d'Ariano (University of Pavia)
  • 'Tests distinguishing between quantum and more general probabilistic theories' Caslav Brukner (University of Vienna)
  • 'Quantum observers and Kolmogorov complexity' Alexei Grinbaum (LARSIM, CEA-Saclay)
29th September 2011 

Talks 

26th May 2011 

Talks 
  • 'Percolation, topological order, and the loss of error threshold for FTQC' Sean Barrett (Imperial College)
  • 'Manipulation and and detection methods for quantum information processing with small numbers of atoms' Yvan Sortais (Institut d'Optique)
  • 'Quantum correlations with no causal order' Ognyan Oreshkov (QuIC, Université Libre de Bruxelles)
  • 'A Non-Trivial Implementation of the Quantum Order Finding Algorithm' Tom Lawson (University of Bristol)
  • 'N-party Hardy proofs for symmetric states' Zizhu Wang (TPT)
  • 'Continuous-wave and pulsed squeezed light in hot atomic vapors' Imad Agha (TPT)


24th February 2011 

Talks 

23rd September 2010 


Talks 

27th May 2010 


Talks 

11th February 2010 

Talks 

8th October 2009 

Talks 

28th May 2009 

Talks