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Engineering a Superconducting Quantum Computer
Online Presentations | 30 Jun 2019 | Contributor(s):: Zijun "Jimmy" Chen
In this talk, I will discuss Google’s efforts to tackle these challenges and engineer a large scale quantum processor. I will also show our latest results on achieving high fidelity single and two qubit operations on these devices, and discuss the prospects for achieving quantum supremacy.
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Quantum Channel Capacities
Online Presentations | 24 May 2019 | Contributor(s):: Peter Shor
The lecture discusses the capacities of a quantum channel, focussing on the basics, but also mentions some recent developments.
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Manipulating Strongly Interacting Individual Quanta: Photon Molecules and 51 Atomic Qubits
Online Presentations | 26 Mar 2019 | Contributor(s):: Vladan Vuletic
I will discuss two applications: By coherently coupling light to Rydberg excitations in a dense atomic medium, we have realized a highly nonlinear optical medium where the interactions between individual photons are so strong that two photons can even form a bound state.
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A Gate-Level Approach To Compiling for Quantum Computers
Online Presentations | 20 Mar 2019 | Contributor(s):: Henry G. Dietz
This talk will briefly present a computer engineer's view of quantum computing, overview our approach, describe the current state of the prototype compiler, and suggest some ways in which compiler automatic parallelization technology might be extended to allow ordinary programs to take...
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Future of AI and Quantum Computing
Online Presentations | 21 Feb 2019 | Contributor(s):: Dario Gil
This presentation will review how IBM’s superconducting qubit implementation and Qiskit software framework is enabling researchers, developers and industrial partners worldwide to explore this new technology.
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Quantum Optics on a Nonlinear Chip
Online Presentations | 08 May 2018 | Contributor(s):: Alexander Solntsev
Bringing the concepts of quantum entanglement and optical nonlinearity together, and integrating them on a chip, opens a way to efficient generation of entangled photons and entanglement.
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Building a Topological Quantum Computer 101
Online Presentations | 20 Jun 2017 | Contributor(s):: Michael Freedman
Michael Freeman shares his perspective on how we should approach building a quantum computer, starting with the mathematical roots and moving through the physics to concrete engineering and materials growth challenges on which success will hinge. He will then discuss a new, enhanced,...
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Equipment, Techniques, and Growth of Ultra-High Purity AlGaAs-GaAs Heterostructures by Molecular Beam Epitaxy
Online Presentations | 26 May 2017 | Contributor(s):: Geoff Gardner
In this talk I detail research and investigation into critical equipment and materials engineering issues related to the quality of the fabricated 2DEG systems. I also will present data that demonstrates the critical role gallium purity plays in 2DEG mobility.
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Photonic Structures with Topological Robustness: from Classical to Quantum
Online Presentations | 09 Jan 2017 | Contributor(s):: Mohammad Hafezi
In this talk, I demonstrate how similar physics can be observed for photons; specifically, how various quantum Hall Hamiltonians can be simulated in an optical platform. I report on the first observation of topological photonic edge state using silicon-on-insulator technology and our recent...
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Atomistic Modeling of Nano Devices: From Qubits to Transistors
Online Presentations | 13 Apr 2016 | Contributor(s):: Rajib Rahman
In this talk, I will describe such a framework that can capture complex interactions ranging from exchange and spin-orbit-valley coupling in spin qubits to non-equilibrium charge transport in tunneling transistors. I will show how atomistic full configuration interaction calculations of exchange...
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Oxide Systems – An Answer to the Qubit Problem?
Online Presentations | 08 Mar 2016 | Contributor(s):: Sudhakar Yarlagadda
One can produce new oxide-based devices by exploiting their tunability, rich physics, and coupling between the various degrees of freedom (such as charge, lattice, spin, etc.). We propose that oxide-based double quantum dots with only one electron (tunneling between the dots) can be regarded as a...
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Photonic Quantum Computation & Quantum Simulation
Online Presentations | 11 Feb 2016 | Contributor(s):: Philip Walther
The advantages of the photons makes optical quantum system ideally suited for fundamental quantum physics experiments and a variety of applications in quantum information processing. Here I will briefly review privacy-preserving photonic quantum cloud computing, where quantum information is...
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Progress in Superconducting Qubits
Online Presentations | 04 May 2015 | Contributor(s):: Robert F. McDermott
I will review progress in the field, with a focus on recent work in Wisconsin in the areas of decoherence and quantum measurement. I will discuss efforts to identify and suppress the dominant source of qubit dephasing, and I will describe a new approach to scalable, high-fidelity qubit...
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Towards Light-Spin Interface for NV Center in Diamond
Online Presentations | 17 Mar 2015 | Contributor(s):: Alexey V Akimov
In this work we present our efforts on using CMOS compatible hyperbolic metamaterials and optical fibers to construct efficient single-photon sources and sensing elements using NV center in diamond.
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Quantum Tic-Tac-Toe
Online Presentations | 07 Feb 2012 | Contributor(s):: Ross Hoehn
Ross Hoehn gives a brief introduction to the basic concepts used in the quantum information field. He conveys linear superpositions and entanglements through penguin coordinates and marital disputes and follows up with the presentation of an entertaining game which both teaches and emphasizes...
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Quantum Information for Quantum Chemistry
Online Presentations | 03 Feb 2012 | Contributor(s):: Sabre Kais
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Quantum Technology: The Second Quantum Revolution
Online Presentations | 03 Feb 2012 | Contributor(s):: Jonathan P Dowling
Jonathan Dowling presents a brief introduction of the Second Quantum Revolution. This talk covers a brief introduction and history of developments in quantum mechanics which has led us to where we are today and a discussion of quantum advancements which are being developed and can change your...
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Quantum Coherent Effects in Photosynthesis
Online Presentations | 06 Aug 2011 | Contributor(s):: K. Birgitta Whaley
I shall present and discuss theoretical studies of the quantum dynamics of a prototypical photosynthetic light harvesting complex, the Fenna-Matthews-Olson (FMO) complex, that analyze the nature and extent of two characteristic features of quantum processors, namely quantum speedup and quantum...
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Tangling with Entanglement: Polar Molecules as Qubits
Online Presentations | 11 May 2011 | Contributor(s):: Dudley R. Herschbach
For arrays of polar molecules, entanglement is supplied by dipole-dipole interaction. Previous studies of prospects for computing with diatomic polar molecules had specified experimental conditions deemed suitable and accessible. This talk reports the first calculations of entanglement pertaining...
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Tutorial 4b: Introduction to the NEMO3D Tool - Electronic Structure and Transport in 3D
Online Presentations | 29 Mar 2011 | Contributor(s):: Gerhard Klimeck
Electronic Structure and Transport in 3D - Quantum Dots, Nanowires and Ultra-Thin Body Transistors