Current graduate students
Paulina Corona Ugalde of the Department of Physics and Astronomy is defending her thesis:
Experimental Prospects for Detecting the Quantum Nature of Spacetime
Paulina is supervised by IQC associate Robert Mann
Characterizing drift qubits
Timothy Proctor, Sandia National Laboratories
It is essential to benchmark and characterize real-world qubits in order to understand whether they are of sufficient quality for quantum information tasks, and if they are not, so that they can be debugged. Many techniques are designed for qubits that stay constant in time, but in reality almost all qubits suffer from some form of time-dependence.
Efficient quantum memory in naturally trapped Rare-Earth ions
Mahmood Sabooni, IQC
The ability to map, store quantum states of light (e. g. single photon) to matter and later retrieve is one of the important building blocks of quantum information processing. Such a device is called a quantum memory for light.
Complexity of quantum impurity models
Sergey Bravyi, IBM Research
I will discuss classical and quantum algorithms for simulation of quantum impurity models. Such models describe a bath of free fermions coupled to a small interacting subsystem called an impurity. Hamiltonians of this form were famously studied by Anderson, Kondo, Wilson and others in 1960s.
Constraint Propagation Games
Zhengfeng Ji, University of Technology, Sydney
Constraint propagation games are simple extended nonlocal games that are motivated by the propagation checking of quantum computation and have found powerful applications in the study of quantum proof systems recently. In this talk, we will introduce their definitions and basic properties, demonstrate their uses in larger games as building blocks, and illustrate the method that turns them into nonlocal games.
Scaling up single-atom spin qubits in silicon
Andrea Morello, Centre for Quantum Computation & Communication Technology, University of New South Wales
The modern information era is built on silicon nanoelectronic devices. The future quantum information era might be built on silicon too, if we succeed in controlling the interactions between individual spins hosted in silicon nanostructures.
Spins in silicon constitute excellent solid-state qubits, because of the weak spin-orbit coupling and the possibility to remove nuclear spins from the environment through 28Si isotopic enrichment.
Sequential measurements, disturbance and property testing
Aram Harrow, Massachusetts Institute of Technology
We describe two procedures which, given access to one copy of a quantum state and a sequence of two-outcome measurements, can distinguish between the case that at least one of the measurements accepts the state with high probability, and the case that all of the measurements have low probability of acceptance.
The Quantum Innovators in science and engineering workshop brings together the most promising young researchers in quantum physics and engineering. Guests are invited for a four-day conference aimed at exploring the frontier of our field.
Superconducting Resonator with Composite Film for Quantum Information
Edward Tang, IQC
The full manipulation of a quantum system can endow us with the power of computing in exponentially increased state space without exponential growth of physical resources. In this thesis, we are dedicated to the developments in superconducting devices and layout design for their future applications in large-scale quantum computation.
Existence and Uniqueness in the Quantum Marginal Problem
Joel Klassen, IQC
The quantum marginal problem asks whether a family of quantum marginals are compatible with a global quantum state. It is of central importance to a wide range of topics in both quantum many body physics and quantum information. Often it can be the case that when a family of quantum marginals are compatible with a global quantum state, that global state is unique.
