Presentation is loading. Please wait.

Presentation is loading. Please wait.

QIC 890/891: A tutorial on Nanowires in Quantum Information Processing QIC 890/891: A tutorial on Nanowires in Quantum Information Processing Daryoush.

Published byAmos Ellis Modified over 8 years ago

Similar presentations

Presentation on theme: "QIC 890/891: A tutorial on Nanowires in Quantum Information Processing QIC 890/891: A tutorial on Nanowires in Quantum Information Processing Daryoush."— Presentation transcript:

1 QIC 890/891: A tutorial on Nanowires in Quantum Information Processing QIC 890/891: A tutorial on Nanowires in Quantum Information Processing Daryoush Shiri, Institute for Quantum Computing (IQC) Daryoush Shiri, Institute for Quantum Computing (IQC) July 21, 23, 28 and 30, 2014 1

2 Agend a Introduction Introduction A crash course on A crash course on Electronic structure calculation Phonon spectrum Electron-phonon scattering Spin-Orbit Interaction Spin-Orbit Interaction Rashba term Dresselhaus term Exchange Interaction Exchange Interaction Spin relaxation mechanisms Spin relaxation mechanisms Dyakonov - Perel Elliot - Yafet Hyperfine interaction Daryoush Shiri, IQC2

3 Introduction 3 Electron spin is a natural choice for a Qubit. Spin of electrons in Quantum Dots (QD). QDs are defined by potential landscaping on 2DEG. 2DEG  bandgap engineering in a superlattice. Electric Field (spin-orbit interaction) Spin to charge conversion ESR

4 Nanowires & QIP 4 Semiconducting nanowires A Host for embedding interacting Quantum Dots Topology-based Q-Computing: Hunt for Majorana Fermions Emitters of single photon, entangled photons G. Weihs & H. Majedi, et al. J. Baugh, IQC L. Kouwenhoven, Delft

5 Superconducting nanowires Detection of single photon (SNPD) NIST See courses offered by: Sir. Anthony Leggett and other faculty members at IQC and Physics on superconductivity

6 Why nanowires? 6 Compatibility with mainstream electronic chip industry As opposed to 2DEG based Qdot systems:  Scalability of Qubits Embedding many Qdots (spin qubits) Better electrostatic control (potential landscape) using many gates Bandgap engineering Fabrication methods (2) Top-down methods Group III-V (InP, InAs, InSb, GaAs, GaP, AlGaN,….) Group V (Si/Ge) Group II-VI (ZnSe/ZnTe) (1) Bottom-up methods e.g. VLS Review article by: J. Ramanujam, D. Shiri, and A. Verma Mater. Express 1, 105-126 (2011).

7 Materials of Choice 7 http://www.ioffe.rssi.ru/SVA/NSM/Semicond/ InAs InSb m*/m 0 = 0.023 µe = 10,000 ~ 30,000 cm 2 /V.s @ base temp (100mK) Lande’ g-factor = 10 λ MFP ~ 300nm m*/m 0 = 0.014 µe = 10,000 ~ 30,000 @ base temp (100mK) Lande’ g-factor = 50 J. Baugh, IQC InSb Core-Shell Tandem

Download ppt "QIC 890/891: A tutorial on Nanowires in Quantum Information Processing QIC 890/891: A tutorial on Nanowires in Quantum Information Processing Daryoush."

Similar presentations

QUANTUM INFORMATION: FUTURE OF MICROELECTRONICS?

QUANTUM INFORMATION: FUTURE OF MICROELECTRONICS?
Searching for Majorana fermions in semiconducting nano-wires Pedram Roushan Peter O’Malley John Martinis Department of Physics, UC Santa Barbara Borzoyeh.

Searching for Majorana fermions in semiconducting nano-wires Pedram Roushan Peter O’Malley John Martinis Department of Physics, UC Santa Barbara Borzoyeh.
Nanostructures Research Group Center for Solid State Electronics Research Quantum corrected full-band Cellular Monte Carlo simulation of AlGaN/GaN HEMTs.

Nanostructures Research Group Center for Solid State Electronics Research Quantum corrected full-band Cellular Monte Carlo simulation of AlGaN/GaN HEMTs.
NIRT: Photon and Plasmon Engineering in Active Optical Devices Based on Synthesized Nanostructures Marko Lončar 1, Mikhail Lukin 2 and Hongkun Park 3 1.

NIRT: Photon and Plasmon Engineering in Active Optical Devices Based on Synthesized Nanostructures Marko Lončar 1, Mikhail Lukin 2 and Hongkun Park 3 1.
Lecture 1: A New Beginning References, contacts, etc. Why Study Many Body Physics? Basis for new Devices Complex Emergent Phenomena Describe Experiments.

Lecture 1: A New Beginning References, contacts, etc. Why Study Many Body Physics? Basis for new Devices Complex Emergent Phenomena Describe Experiments.
One-dimensional hole gas in germanium silicon nanowire hetero-structures Linyou Cao Department of Materials Science and Engineering Drexel University 12/09/2005.

One-dimensional hole gas in germanium silicon nanowire hetero-structures Linyou Cao Department of Materials Science and Engineering Drexel University 12/09/2005.
Spin-orbit effects in semiconductor quantum dots Departament de Física, Universitat de les Illes Balears Institut Mediterrani d’Estudis Avançats IMEDEA.

Spin-orbit effects in semiconductor quantum dots Departament de Física, Universitat de les Illes Balears Institut Mediterrani d’Estudis Avançats IMEDEA.
LPS Quantum computing lunchtime seminar Friday Oct. 22, 1999.

LPS Quantum computing lunchtime seminar Friday Oct. 22, 1999.
Laterally confined Semiconductor Quantum dots Martin Ebner and Christoph Faigle.

Laterally confined Semiconductor Quantum dots Martin Ebner and Christoph Faigle.
David Gershoni The Physics Department, Technion-Israel Institute of Technology, Haifa, 32000, Israel and Joint Quantum Institute, NIST and University of.

David Gershoni The Physics Department, Technion-Israel Institute of Technology, Haifa, 32000, Israel and Joint Quantum Institute, NIST and University of.
Image courtesy of Keith Schwab.

Image courtesy of Keith Schwab.
Single-shot read-out of an individual electron spin in a quantum dot J. M. Elzerman, R. Hanson, L. H. Willems van Beveren, B. Witkamp, L. M. K. Vandersypen,

Single-shot read-out of an individual electron spin in a quantum dot J. M. Elzerman, R. Hanson, L. H. Willems van Beveren, B. Witkamp, L. M. K. Vandersypen,
“Quantum computation with quantum dots and terahertz cavity quantum electrodynamics” Sherwin, et al. Phys. Rev A. 60, 3508 (1999) Norm Moulton LPS.

“Quantum computation with quantum dots and terahertz cavity quantum electrodynamics” Sherwin, et al. Phys. Rev A. 60, 3508 (1999) Norm Moulton LPS.
Optical study of Spintronics in III-V semiconductors

Optical study of Spintronics in III-V semiconductors
Research Highlights – N. Pelekanos

Research Highlights – N. Pelekanos
Quantum Dots and Spin Based Quantum Computing Matt Dietrich 2/2/2007 University of Washington.

Quantum Dots and Spin Based Quantum Computing Matt Dietrich 2/2/2007 University of Washington.
Deterministic teleportation of electrons in a quantum dot nanostructure Deics III, 28 February 2006 Richard de Visser David DiVincenzo (IBM, Yorktown Heights)

Deterministic teleportation of electrons in a quantum dot nanostructure Deics III, 28 February 2006 Richard de Visser David DiVincenzo (IBM, Yorktown Heights)
1 Motivation: Embracing Quantum Mechanics Feature Size Transistor Density Chip Size Transistors/Chip Clock Frequency Power Dissipation Fab Cost WW IC Revenue.

1 Motivation: Embracing Quantum Mechanics Feature Size Transistor Density Chip Size Transistors/Chip Clock Frequency Power Dissipation Fab Cost WW IC Revenue.
Optical control of electrons in single quantum dots Semion K. Saikin University of California, San Diego.

Optical control of electrons in single quantum dots Semion K. Saikin University of California, San Diego.
Quantum Dots Arindam Ghosh. Organization of large number of nanostructures – scalability Utilize natural forces Organic, inorganic and biological systems.

Quantum Dots Arindam Ghosh. Organization of large number of nanostructures – scalability Utilize natural forces Organic, inorganic and biological systems.

Similar presentations

Ads by Google