Courses
Upcoming courses
Past courses
1-hour course by Pierre Rouchon, Mines-ParisTech, PSL Research University and Inria, Paris.
Title : Rotating wave approximations and perturbation theory for time periodic and pseudo-periodic Schrödinger systems : simple recipes for first-order and second-order approximations, physical examples and underlying mathematical justifications.
Date : April 24, 15:00-16:00.
Location : Institut Henri Poincaré, 11 Rue Pierre et Marie Curie, 75005 Paris. amphithéâtre Darboux.
1-hour course by Alain Sarlette, Mines-ParisTech, PSL Research University and Inria, Paris.
Title : Beyond the rotating wave approximations : Floquet theory for time-periodic linear systems; specificities of time-periodic Schrödinger systems.
Date : April 27, 10:00-11:00.
Location : Institut Henri Poincaré, 11 Rue Pierre et Marie Curie, 75005 Paris. amphithéâtre Darboux.
1-hour course by Frédéric Grosshans, Laboratoire Aimé Cotton, Université Paris-Sud, ENS Cachan, CNRS, Université Paris-Saclay, Orsay, France
Title : Continuous variable quantum key distribution, or how to do quantum cryptography without qubits
Abstract : While most quantum information is studied with two-level systems, continuous variable system have also been present in the field since the last century. They present experimental advantages, as well as an interesting different point of view on quantum information since they are often studied with a different formalism. During this presentation, we will introduce quantum continuous variable and their application to quantum key distribution protocols.
Date : May 7, 15:00 - 16:00
Location : Institut Henri Poincaré, 11 Rue Pierre et Marie Curie, 75005 Paris, amphithéâtre Darboux.
2-hour course by Birgitta Whaley, University of California Berkeley, Berkeley, USA
Title : Quantum Measurement and the interface to Classical Readout.
Dates :
- first lecture : May 28, 14:30
- second lecture : May 30, 14:30
Location : Institut Henri Poincaré, 11 Rue Pierre et Marie Curie, 75005 Paris, amphithéâtre Darboux.
2-hour course by Adolfo del Campo, University of Massachusetts, Boston, USA
- First lecture : Shortcuts to adiabaticity in noncritical systems, May 31, 14:30
- Second lecture : Shortcuts to adiabaticity in critical systems, June 1, 14:30
Location : Institut Henri Poincaré, 11 Rue Pierre et Marie Curie, 75005 Paris, amphithéâtre Darboux.
Two lectures by Madalin Guta, University of Nottingham, UK.
- First lecture : Tuesday June 12, 14:30 - 16:00, "Quantum tomography and local asymptotic normality"
- Second lecture : Wednesday June 13, 14:30 - 16:00, "System identification for input-output quantum systems"
Location : Institut Henri Poincaré, 11 Rue Pierre et Marie Curie, 75005 Paris, amphithéâtre Darboux.
Lecture by Francesca Chittaro, Université de Toulon, France.
Title : High-accuracy adiabatic elimination 1: fundamental approach
Date : Friday June 15, 14:30 - 16:00,
Location : Institut Henri Poincaré, 11 Rue Pierre et Marie Curie, 75005 Paris, amphithéâtre Darboux.
Lecture by Rémi AZOUIT (Sherbrooke University) and Paolo FORNI (Mines-ParisTech and INRIA)
"High-accuracy adiabatic elimination 2: beyond the state of the art."
Date : Monday 18 June, 2.30 pm – 4 pm
Location : Institut Henri Poincaré, 11 Rue Pierre et Marie Curie, 75005 Paris, amphithéâtre Darboux.
6-hour course by Patrice Bertet, Commissariat à l'énergie atomique et aux énergies alternatives - Saclay, Gif-sur-Yvette, France
Title : Electrical quantum engineering with superconducting circuits
Abstract : The research field of quantum state engineering with electrical superconducting circuits was born from fundamental questionings about the possibility of observing macroscopic quantum phenomena. This led to the experimental demonstration, 15 years ago, that the quantum state of an electrical circuit can be manipulated and read-out. Superconducting circuits based on Josephson junctions can thus behave as genuine artificial two-level atoms, which can be used as quantum bits. Compared to real atoms, these superconducting qubits are macroscopic in size, leading to large electrical or magnetic dipole, which facilitates their coupling to other circuits. Superconducting qubits can in particular be strongly coupled to superconducting resonators. This coupled qubit-resonator system is described by the Jaynes-Cummings model, which also describes the coupling of real atoms to high-quality-factor resonators in Cavity Quantum Electrodynamics (QED). The circuit version (called by analogy to atomic physics “Circuit QED”) offers an architecture for quantum information processing since it enables qubit readout and multi-qubit entanglement and gates. Recent experiments have demonstrated the operation of elementary quantum processors based on up to 10 qubits. In addition, it is possible to couple superconducting circuits and resonators to other quantum systems such as spins or mechanical resonators, forming so-called Hybrid Quantum Devices.
The goal of these 4 lectures is to offer an overview of the field. They will be organized as follows :
- Introduction to superconducting circuits and qubits
- QED : qubit state readout, and resonator quantum state engineering
- Multi-qubit quantum state engineering and quantum gates
- Introduction to Hybrid Quantum Devices
Dates :
- first lecture : June 19, 10:30 - 12:00. slides
- second lecture : June 19, 14:30 - 16:00. slides
- third lecture : June 21, 10:30 - 12:00. slides
- fourth lecture : June 21, 14:30 - 16:00. slides
Location : Institut Henri Poincaré, 11 Rue Pierre et Marie Curie, 75005 Paris, amphithéâtre Darboux.
Lecture by Daniel Burgarth, Aberystwyth University, UK.
Title : Dynamical Decoupling of Unbounded Operators.
Date : Friday June 22, 2018, 10.30 am – 12 pm
This lecture is an extended version of a talk given during the June 5th – 7th workshop.
Location : Institut Henri Poincaré, 11 Rue Pierre et Marie Curie, 75005 Paris, amphithéâtre Darboux.
Lecture by Marco Genoni, University of Milan, Italy.
Title : Quantum parameter estimation via time-continuous monitoring.
Abstract : In this lecture I will address the problem of parameter estimation for continuously monitored quantum systems. I will introduce the correct quantum Cramér-Rao bound that gives the ultimate bounds on the estimation precision for this kind of strategies, and I will describe a simple and efficient numerical algorithm to calculate this bound in the case of either time-continuous homodyne or photo-detection.
Date : Monday June 25, 2018, 2:30 pm - 4:00 pm
Location : Institut Henri Poincaré, 11 Rue Pierre et Marie Curie, 75005 Paris, amphithéâtre Darboux.
Lecture by Igor Mekhov, University Paris-Saclay, France and University of Oxford, UK, and St. Petersburg State University, Russia.
Title : Open systems beyond dissipation: weak measurements and feedback-induced phase transitions in many-body systems
Abstract : Open dissipative systems have already shifted the paradigm of many-body physics well beyond studies of isolated systems obeying unitary evolution. The next step advancing this field is to exploit the quantum nature of measurement process including feedback control. Such a problem includes the dissipation as a special case (by the ignorance of measurement results), but enables achieving many-body phases and phenomena, which are typical to neither closed systems described by Hamiltonians, nor open systems described by e.g. Lindblad master equation. The feedback-induced phase transitions in a hybrid quantum-classical system can allow tuning the properties of quantum transitions beyond the dissipative ones. Considering ultracold bosons and fermions in optical lattices, we prove that the quantum backaction of weak collective measurement constitutes a novel source of competitions in many-body systems (in addition to atomic interaction and tunnelling). This leads to novel effects: multimode oscillations of macroscopic superposition states, protection and break-up of fermion pairs, as well as generation of antiferromagnetic states. Novel processes beyond the standard Hubbard models can be designed by the measurement, entering the field of non-Hermitian (while being non-dissipative) many-body physics: long-range correlated pair tunnelling and Raman-like second-order transitions beyond the typical quantum Zeno dynamics. Feedback control induces phase transitions with tunable properties.
Date : June 27, 14:30
Location : Institut Henri Poincaré, 11 Rue Pierre et Marie Curie, 75005 Paris, amphithéâtre Darboux.
Lecture by Francesca Chittaro (Université de Toulon, France) and Nicolas Augier (Ecole Polytechnique, Paris, France)
Title : Adiabatic Theorem, conical intersections, and their applications to quantum control
Date : July 9, 14:30 - 16:00
Location : Institut Henri Poincaré, 11 Rue Pierre et Marie Curie, 75005 Paris. amphithéâtre Darboux.
Two lectures by Hendra Nurdin, School of Electrical Engineering and Telecommunications, UNSW Australia, Sydney, Australia.
Title : Non-Gaussian travelling fields and quantum state transfer into and out of stationary quantum systems
Abstract : The two lectures will give an introduction to the modelling of non-Gaussian travelling fields and their interaction with stationary quantum systems. The application of concepts from linear systems theory to the transfer of photons from travelling travelling fields into linear quantum systems will be explained. Illustrative examples will include release of photons into a travelling field and switching linear quantum memories. If time permits example calculations will be presented and discussed.
Dates : July 10 & July 12, 14:30 - 16:00
Location : Institut Henri Poincaré, 11 Rue Pierre et Marie Curie, 75005 Paris. amphithéâtre Darboux.
