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When optical components are reduced to the nanoscale, they exhibit interesting properties that can be harnessed to create new devices. For example, imagine a block of material with thin layers of alternating materials. This creates a periodic arrangement of alternating dielectric constants, forming a "photonic crystal" that is analogous to the electronic crystals used in semiconductor devices. Photonic crystals, along with quantum dots and other devices patterned at the nanoscale, may form the basis for sensors and switches used in computers and telecommunications. More information on Nanophotonics can be found here.
ECE 695FO Lecture 12A: On-Chip Interconnects - Guided Wave Interconnects
06 Feb 2019 | | Contributor(s):: Peter Bermel
ECE 695FO Lecture 12B: On-Chip Interconnects - Photonic Crystals
ECE 695FO Lecture 12C: On-Chip Interconnects - Photonic Waveguides
ECE 695FO Lecture 12D: On-Chip Interconnects - Photonic Slabs
ECE 695FO Lecture 11: Networking Growth
Topics: pgrading existing network hardware Improved communications protocols Novel network concepts
Superfluids of Light: Bose-Einstein Condensation of Polaritons
04 Feb 2019 | | Contributor(s):: David W. Snoke
In this talk I will review some of this past work and present recent results, including oscillation of a polariton condensate in a one-dimensional ring trap, and polariton drag, in which electrons directly push photons in a wire.
Creating Inflections: DARPA’s Electronics Resurgence Initiative
09 Jan 2019 | | Contributor(s):: William Chappell
Tutorial on Two Photon Lithography Tool
26 Nov 2018 | | Contributor(s):: Mohammad Mahfuzul Kabir, Varun Ajit Kelkar
Two-photon lithography (TPL) is a nano-scale 3-d fabrication technique. TPL depends upon the two-photon polymerization process, whereby two incident photons of light are absorbed by a precursor material leading to polymerization. The smallest feature size (voxel) achievable in a TPL...
Quantum Coherent Transport in Atoms & Electrons
21 Jun 2017 | | Contributor(s):: Yong P. Chen
I will discuss some recent experimental examples from my lab studying quantum coherent transport and interferometry in electrons as well as cold atoms. For example, phase coherent electron transport and interference around a cylinder realized in a nanowire of topological insulator...
Novel Plasmonic Materials and Nanodevices for Integrated Quantum Photonics
19 Jun 2017 | | Contributor(s):: Mikhail Shalaginov
This research focuses on color centers in diamond that share quantum properties with single atoms. These systems promise a path for the realization of practical quantum devices such as nanoscale sensors, single-photon sources, and quantum memories. In particular, we explored an intriguing...
Coherent Nonlinear Optical Propagation Processes in Hyperbolic Metamaterials
08 Jun 2017 | | Contributor(s):: Alexander K. Popov
Coherence and interference play an important role in classic and quantum physics. Processes to be employed can be significantly enhanced and the unwanted ones suppressed through the deliberately tailored constructive and destructed interference at quantum transitions and at nonlinear optical...
08 Jun 2017 | | Contributor(s):: Vladimir M. Shalaev
Opening remarks for the 2017 Purdue Quantum Center workshop.
Soft, Biocompatible Optoelectronic Interfaces to the Brain
08 Jun 2017 | | Contributor(s):: John A. Rogers
In this talk, we will describe foundational concepts in physics and materials science for these types of technologies, in 1D, 2D and 3D architectures. Examples in system level demonstrations include experiments on freely moving animals with ‘cellular-scale’, injectable optofluidic...
What is Markovian and non-Markovian in Quantum Mechanics: New Approaches and Viewpoints
15 May 2017 | | Contributor(s):: Francesco Ciccarello
While in classical physics the notion of what is Markovian or not is well defined, this is not the case when it comes to open quantum systems. What makes a quantum dynamics Markovian or non-Markovian (NM)? Traditional answers to this question involve the celebrated Lindblad master equation (ME)...
ECE 695NS Lecture 5: Bandstructures for Electro-optic Systems
27 Jan 2017 | | Contributor(s):: Peter Bermel
Outline:Bandstructure problemBloch's theoremPhotonic bandstructures1D2D
ECE 695NS Lecture 6: Photonic Bandstructures
Outline:Bandstructure symmetries2D Photonic bandstructuresPhotonic waveguide bandstructuresPhotonic slab bandstructures3D Photonic lattice types + bandstructures
ECE 695NS Lecture 7: Photonic Bandstructure Calculations
Outline:Maxwell eigenproblemMatrix decompositionsReformulating the eigenproblemsIterative eigensolversConjugate gradient solversPreconditionersDavidson solversTargeted solvers
ECE 695NS Lecture 4: Eigenproblems for Electro-optic Systems
25 Jan 2017 | | Contributor(s):: Peter Bermel
Outline:Electrostatics PotentialsSolving Ax = bSpin arraysSolving eigenproblemsBandstructure problemBloch's theoremPhotonic bandstructures1D2D
ECE 695NS Lecture 3: Practical Assessment of Code Performance
Outline:Time ScalingExamplesGeneral performance strategiesComputer architecturesMeasuring code speedReduce strengthMinimize array writesProfiling
ECE 695NS Lecture 2: Computability and NP-hardness
13 Jan 2017 | | Contributor(s):: Peter Bermel
Outline:OverviewDefinitionsComputing MachinesChurch-Turing ThesisPolynomial Time (Class P)Class NPNon-deterministic Turing machinesReducibilityCook-Levin theoremCoping with NP Hardness