Paris Centre for Quantum Computing
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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
  • Optically addressable qubits in rare-earth doped crystals Philippe Goldner (Chimie ParisTech)
  • Quantifying Contextuality Shane Mansfield (IRIF / UP7)  Quantifying Contextuality
  • Overlapping Qubits Thomas Vidick (Caltech)
  • Multi-user quantum key distribution with a semi-conductor source of entangled photon pairs Adeline Orieux (LTCI / Telecom)
  • Large Bell violations from communication complexity lower bounds Gabriel Senno (Buenos Aires)
  • Hybridized Quantum Data Locking Romain Alléaume (Telecom / LTCI)
    ​​
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 
  • 'Breakdown of a Z2-topological phase: the toric code in a magnetic field' Julien Vidal (Université Paris 6)
  • 'Robust Preparation and Manipulation of Protected Qubits Using Time-Varying Hamiltonians' Thomas Coudreau (Université Paris 7)
  • 'Quantum rejection sampling' Jérémie Roland (QuIC, Univ. Libre de Bruxelles)
  • 'Continuous-Variable Quantum Computation' Peter van Loock (OQITG, Univ. Erlangen-Nürberg)
  • 'Bounded uncertainty relations in a Hamiltonian framework and an example' Aikaterini Mandilara (QuIC, Univ. Libre de Bruxelles)
  • 'Practical quantum coin flipping' Anna Pappa (TPT / UP7)


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 
  • 'Multiparty Bell inequalities made simple(r)' Dan Browne (UCL)
  • 'Quantum information processing on tensor-network states' Tomoyuki Morimae (Univ. Paris-Est)
  • 'Gaussian quantum error correction' Nicolas Cerf (QuIC, Université Libre de Bruxelles)
  • 'Quantum storage in atomic samples' Thierry Chanelière (LAC, Univ. Paris-Sud) (LRI)
  • 'Four wave mixing of matter waves' Chris Westbrook (Inst. d'Optique)
  • 'Entanglement and Flow and what they say about universality and simulateability of quantum computation.' Damian Markham (CNRS, TPT)


23rd September 2010 


Talks 
  • 'Integrated Quantum Photonics' Jeremy O'Brien (Bristol)
  • 'Decoherence enhanced measurements' Dan Braun (Toulouse)
  • 'Single electron experiments in ballistic quantum conductors' Gwendal Feve (ENS)
  • 'Long distance two-party quantum cryptography made simple' Iordanis Kerenidis (LRI)
  • 'Quantum reference frame resources and monotones' Borzumehr Toloui (Calgary, Paris Sud, TPT)
  • 'Pauli graph attached to a arbitrary q-level system and to q-dit mixtures'Michel Planat (Inst. FEMTO-ST, Besan�on)


27th May 2010 


Talks 
  • 'Interactive Hashing and BB84 states' Takeshi Koshiba (LRI visiting prof.)
  • 'Ion Coulomb crystals and quantum information: an experimental approach' Luca Guidoni (UP7)
  • 'Zero-error channel capacity and simulation assisted by non-local correlations' Andreas Winter (University of Bristol / NUS Singapore)
  • 'Discrete and continuous variables : the best of both worlds' Alexei Ourjoumtsev (Inst d'Opt)
  • 'Geometrical approach to SU(2) navigation with Fibonacci anyons' R�my Mosseri (UP6)
  • 'Ancilla-Driven Universal Quantum Computation' Janet Anders (UCL)


11th February 2010 

Talks 
  • 'Entanglement Distribution in Quantum Networks' Antonio Acin (ICFO)
  • 'TBA' Kae Nemoto (NII)
  • 'Quantum field state control and measurement in a cavity' Jean-Michel Raimond (ENS Ulm)
  • 'Fault-tolerant quantum communication with constant overhead' Ashwin Nayak (U. Waterloo and Perimeter)
  • 'Robust and Efficient Sifting-Less Quantum Key Distribution Protocols' Fr�d�ric Grosshans (ENS Cachan)
  • 'Unitarity plus causality implies localizability' Pablo Arrighi (U. de Grenoble)


8th October 2009 

Talks 
  • 'Secret keys and random numbers from quantum non locality' Serge Massar (ULB)
  • 'Understanding quantum mechanics via information-theoretic reconstructions' Alexei Grinbaum (LARSIM)
  • 'A quantum local lemma' Julia Kempe (Tel Aviv Uni, on leave from LRI)
  • 'A scanner darkly: weak measurements and their role in quantum communication' Marco Barbieri (Inst d'Opt)
  • 'The weights in MDS codes' Patrick Sole (TPT)
  • 'Semiconductor waveguide source of counterpropagating twin photons at room temperature' Sara Ducci (UP7)


28th May 2009 

Talks 
  • 'The elusive source of quantum effectiveness' Vlatko Vedral (Oxford / NUS)
  • ' Aspects of quantum information with trapped ions' Thomas Coudreau (UP7)
  • 'Manipulation of individual atoms for quantum Information' Antoine Browaeys (Inst d'Optique)
  • 'Families of quantum codes which are suitable for iterative decoding' Jean-Pierre Tillich (INRIA)
  • 'Optimal quantum strong coin flipping' Andr� Chailloux (LRI)
  • 'Long-Distance Continuous-Variable Quantum Key Distribution with Discrete Modulation ' Anthony Leverrier (TPT / Inst. d'Optique)


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