Current graduate students
Simulation of III-V Nanowires for Infrared Photodetection
Khalifa M. Azizur-Rahman, McMaster University
The absorptance in vertical nanowire (nw) arrays is typically dominated by three optical phenomena: radial mode resonances, near-field evanescent wave coupling, and Fabry–Perot (F-P) mode resonances. The contribution of these optical phenomena to GaAs, InP and InAs nw absorptance was simulated using the finite element method. The study compared the absorptance between finite and semi-infinite nws with varying geometrical parameters, including the nw diameter (D), array period (P), and nw length (L).
Many-Body Localization Through the Lens of Ultracold Quantum Gases
Pranjal Bordia, Max Planck Institute, Munich
A fundamental assumption of quantum statistical mechanics is that closed isolated systems always thermalize under their own dynamics. Progress on the topic of many-body localization has challenged this vital assumption, describing a phase where thermalization, and with it, equilibrium thermodynamics, breaks down.
On-demand entangled photon sources
Arash Ahmadi
In this presentation I will be talking about the project we have done in our group since last October on the emission of a QD embedded in a nano-wire.
Quantum science and technology at QuTech (Delft, NL)
Julia Cramer, QuTech Delft
QuTech is an advanced research center for quantum computing and the quantum internet, addressing scientific and engineering challenges in collaboration with industrial partners. QuTech is striving to remain at the forefront in quantum information science and technology. I’ll give some info on the development of QuTech over the years. Furthermore, I will present what the goals and focusses are of our research teams, current work and latest milestones.
Chernoff Bound for Quantum Operations is Faithful
Nengkun Yu, Tsinghua University & University of Technology, Sydney
We consider the problem of testing two quantum hypotheses of quantum operations in the setting of many uses where an arbitrary prior distribution is given. The concept of the Chernoff bound for quantum operations is investigated to track the minimal average probability of error of discriminating two quantum operations asymptotically.
Joachim Nsofini of the Department of Physics and Astronomy is defending his thesis:
Quantum Information Enabled Neutron Interferometry
Joachim is supervised by IQC faculty member David Cory.
Mode-selection, purification, and ultrafast manipulation of quantum light with nonlinear waveguide devices
John Donohue, University of Paderborn
The temporal structure of quantum light offers an intrinsically high-dimensional and robust platform for encoding quantum information. In particular, the time-frequency degree of freedom can be explored in the frame of pulsed temporal modes, the ultrafast analogy to spatial Hermite-Gauss or orbital angular momentum modes. These overlapping temporal modes are naturally compatible with waveguide devices and fibre infrastructure, but present unique challenges to fully explore and exploit.
A platform to study many-body physics with photons
Hakan Tureci, Princeton University
The past decade has seen enormous experimental progress in building superconducting electrical circuits featuring artificial atoms subject to the quantized electromagnetic field of microwave photons. The fabrication and control of superconducting circuits has reached a stage where many such elements can be wired up into intricate networks, allowing the preparation and readout of complex quantum states of photons and atoms.
The optimality of projections for quantum state exclusion
Abel Molina, IQC
We will first motivate the problem of quantum state exclusion of pure states, through its connections with the PBR game and with compatibility conditions for quantum state assignments. Then, we will discuss our recent result regarding the optimality of projections for perfect state exclusion of 3 pure states in 3 dimensions (arXiv:1702.06449).
Quantum simulation with laser-cooled trapped ions
Rajibul Islam, Institute for Quantum Computing
Laser-cooled trapped ions are among the most versatile experimental platforms for the simulation of non-trivial quantum Hamiltonians. What distinguishes this platform from others is the extent to which it is experimentally possible to control this system at the level of individual particles and interactions between them.
