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From Einstein to Quantum Information
Anton Zeilinger - Austrian Academy of Sciences
Enigmas in Galaxy Formation
Anthony Aguirre - University of California, Santa Cruz
Interpretation of Quantum Theory: Lecture 15
Anton Zeilinger - Austrian Academy of Sciences
Geometry of Fast Moving Strings
Andrei Mikhailov - Universidad Autonoma de Madrid
Eternal Inflation Multiple Universes and other Dark Matters
Anthony Aguirre - University of California, Santa Cruz
Tomography without trusted apparatus
Michele Mosca - Institute for Quantum Computing (IQC)
I will talk about \'self-testing\' quantum apparatus.
News Flash: adapting compressed sensing to quantum systems
Robert Kosut - SC Solutions (United States)
Priors for quantum states & processes
Karol Zyczkowski - Jagiellonian University
As became apparent during Koenraad\'s talk, there are some important subleties to concepts like \'flat prior\' and \'uniform distribution\'... especially over probability simplices and quantum state spaces. This is a key problem for Bayesian approaches. Perhaps we\'re more interested in Jeffreys…
Dynamical Evolution of Superoperator for Hamiltonian Identification and Quantum Dynamical Control
Estimation of quantum Hamiltonian systems is a pivotal challenge to modern quantum physics and especially plays a key role in quantum control. In the last decade, several methods have been developed for complete characterization of a \'superopertor\', which contains all information about a quantum…
Polarisation tomography of macro- and mesoscopic quantum states of light
Maria Chekhova - Max Planck Institute for the Science of Light
We report an experiment on reconstructing the quantum state of bright (macroscopic) polarization-squeezed light generated in a birefringent (polarization-maintaining) fibre due to the Kerr nonlinearity. The nonlinearity acts on both H and V polarization components, producing quadrature squeezing; by…
Learning from experiments on coherent control
David Cory - Institute for Quantum Computing (IQC)
I will discuss a few case studies of coherent control experiments and how we use quantum esstimation to motivate improved experiments. Examples from NMR with physical and logical quits, electron/nuclear spin systems and persistent current flux qubits
Tomography for quantum diagnostics
Zdenek Hradil - Palacký University
Quantum information technologies have recorded enormous progress within the recent fifteen years. They have developed from the early stage of thought experiments into nowadays almost ready-to-use technology. In view of many possible applications the question of efficient analysis and diagnostics of…
Tomography on the Sphere
a short presentation about work characterizing triphoton states via Wigner functions on the Poincaré sphere.
Designing Optimal States and Transformations for Quantum Optical Metrology and Communication
Dmitry Uskov - Tulane University
I will briefly describe our recent progress in solving some optimization problems involving metrology with multipath entangled photon states and optimization of quantum operations on such states. We found that in the problem of super-resolution phase measurement in the presence of a loss one can…
Two qubit visualisation
Joe Altepeter - University of Illinois Urbana-Champaign
After working on this for the past week, I\'m pretty excited about his topic. The method allows easy visualization of single qubit rotations and separable projections, much like the Poincare sphere for one qubit states.
Multiple observations of quantum systems
Vladimir Buzek - Slovak University of Technology in Bratislava
Let us assume a following scenario: In a state of a quantum system one qubit is encoded. The first observer has no prior knowledge about the state of the qubit. He performs an optimal measurement on the system and based on the measured data he estimates the state on the qubit. After performing the…
How to measure fidelity between two mixed quantum states?
Karol Zyczkowski - Jagiellonian University
Assume one laboratory designed a technique to produce quantum states in a given state $ ho$. The other lab wants to generate exactly the same state and they produce states $sigma$. If we want to know how well the second lab is doing we need to characterize the distance between $sigma$ and $ ho$ by…