Current graduate students
David P. Pappas, National Institute of Standards and Technology (NIST)
A brief history and overview of the requirements to guide the research and development for high-coherence superconducting quantum circuits will be given. The main focus will be on materials development at NIST. Topics will include identifying and mitigating loss due to amorphous two-level systems at interfaces and how to scale the fabrication of small aluminum-oxide tunnel junctions. The junctions were studied with atom probe microscopy to get an understanding of where the oxidation occurs.
PhD Thesis Presentation
Candidate: Thomas McConkey
Supervisors, Matteo Mariantoni, Amir H. Majedi. On display in the Engineering graduate studies office, DWE 3520C. Oral defence Friday, June 1, 10:00 a.m., EIT 3142.
Alexander Grimm, Yale University
In recent years, circuit quantum electrodynamics (QED) has seen considerable efforts towards protecting quantum information from unwanted sources of decoherence through quantum error correction. Independent of the implementation, this is based on encoding a logical qubit into a stable manifold within a larger Hilbert space, whose symmetries restrict the number of independent errors and make them detectable and correctable.
On Thursday, June 7 the Institute for Quantum Computing (IQC) and the Perimeter Institute for Theoretical Physics (PI) will participate in the one-day Many-body States and Dynamics Workshop.
The goal of the workshop is to describe ongoing efforts to experimentally realize quantum many-body states and dynamics, and discuss interesting classes of states and dynamics that could be targeted.
The number theory of quantum information
Jon Yard, IQC
Abstract: Quantum-mechanical amplitudes and unitaries are typically expressed over the complex numbers. Because there is a continuum of complex numbers, classical computations of quantum systems generally utilize finite-precision approximations by rational numbers.
Dagmar Bruss, University of Duesseldorf
The resource theory of quantum coherence studies the off-diagonal elements of a density matrix in a distinguished basis, whereas the resource theory of purity studies all deviations from the maximally mixed state. We establish a direct connection between the two resource theories, by identifying purity as the maximal coherence, which is achievable by unitary operations. The states that saturate this maximum identify a universal family of maximally coherent mixed states.
A new conference for graduate students and postdoctoral fellows in quantum science aims to foster collaboration and provide a glimpse into the exciting research taking place in Canada.
Hosted jointly by the three Canada First Excellence Research Fund (CFREF) programs— the Stewart Blusson Quantum Matter Institute (SBQMI), Institut Quantique (IQ), and Transformative Quantum Technologies (TQT)— the Canadian Graduate Quantum Conference runs June 20-22 at the University of British Columbia (UBC) in Vancouver.
The Creative Destruction Lab (CDL) is hosting a half-day symposium to discuss recent advances in Quantum Machine Learning, its near-term industry applications, and opportunities for commercialization with private financing as a technology startup.
Crystal Senko: Ion traps and multi-level quantum systems
I give an overview of trapped ion quantum information experiments and discuss prospects for implementing multi-valued quantum logic using trapped ions.
Jan Haase, Universität Ulm
Whenever one is tempted to employ a quantum system for any kind of applications, the focus usually lies on two properties setting it apart from a system described by a classical theory, namely the coherent superposition of different quantum states and entanglement between two ore more constituents forming the system.
