Events

Seminar featuring Vikesh Siddhu

A long standing issue in quantum information theory is to understand the quantum capacity. One main reason for our lack of understanding is the non-additivity of the one-shot quantum capacity. Another reason is the absence of clarity about noisy quantum channels that have positive quantum capacity.

Seminar featuring Ghulam Dastgeer, Sejong University

Two-dimensional layered materials have earned considerable importance in condensed matter physics, especially to construct van der Waals heterojunctions, spintronic and quantum devices. Conventionally, the heterostructures such diodes are composed of n-type and p-type semiconductors and each region transport opposite charges in nature.

Jesse Stryker, The University of Washington

Results from the first digital quantum simulation of an SU(2) gauge theory are presented. This was done by analytically constructing gauge-invariant states and implementing a Trotterized time evolution operator for that basis on superconducting hardware. By using error mitigation techniques, electric energy measurements could be reliably extracted following one Trotter-Suzuki time step. This work is a small but important step toward determining what field-theoretic calculations will be possible using near-term devices.

Pavel Lougovski, Oak Ridge National Laboratory

Simulating real time dynamics of quantum field theories (QFTs) such as quantum chromodynamics poses a significant challenge in fundamental physics. Quantum computers may be able to help and recent progress in designing and analyzing scaling of quantum simulation algorithms for various QFTs is encouraging. In this talks we will discuss quantum and quantum-classical simulation strategies for the Schwinger model – quantum electrodynamics in 1+1 dimension.

Seminar featuring Bhaskaran Muralidharan, Indian Institute of Technology Bombay

Semiconductor nanowire-superconductor hybrid systems provide a promising platform for hosting unpaired Majorana fermions and thus realizing fault-tolerant topological qubits. In this talk, starting from the basic tenets of quantum transport theory, we demonstrate how to adapt the Non-Equilibrium Green’s Function (NEGF) formalism to model quantum transport in normal (N)-superconductor (S) junctions.

Join us for three days at the Institute for Quantum Computing (IQC) for Schrödinger's Class November 22 – 24, 2019. You will have the opportunity to attend lectures and engage in hands-on activities focused on the integration of quantum technology into the current teaching curriculum. We will discuss quantum information science and technology to give you a deeper understanding of quantum mechanics.

The deadline to apply is Friday, October 4, 2019.

Tomoyuki Morimae, Kyoto University

It is known that several sub-universal quantum computing models, such as the IQP model, Boson sampling model, and the one-clean qubit model, cannot be classically simulated unless the polynomial-time hierarchy collapses. However, these results exclude only polynomial-time classical simulations. In this talk, based on fine-grained complexity conjectures, I show more ``fine-grained" quantum supremacy results that prohibit certain exponential-time classical simulations. (Morimae and Tamaki, arXiv:1901.01637)

Mete Atature, The University of Cambridge

Optically active spins in solids offer exciting opportunities as scalable and feasible quantum-optical devices. Numerous material platforms including diamond, semiconductors, and atomically thin 2d materials are under investigation, where each platform brings some advantages of control and feasibility along with other challenges. The inherently mesoscopic nature of solid-state platforms leads to a multitude of dynamics between spins, charges, vibrations and light.

Ivan Deutsch, University of New Mexico

Atomic spins are natural carriers of quantum information given their long coherence time and our capabilities to coherently control and measure them with magneto-optical fields. In this seminar I will describe two paradigms for quantum information processing with ensembles of spin in cold atoms. The strong electric dipole-dipole interactions arising when atoms are excited to high-lying Rydberg states is a powerful method for designing entangling interactions in neutral atoms.

The goal of the IQC Workshop on Quantum Illumination is to bring together a wide range of participants from these various domains to discuss the state of the art in laboratory research, the range of possible applications, and paths toward those applications.