scholarly journals Faraday rotation spectroscopy of quantum-dot quantum wells

2005 ◽  
Vol 71 (20) ◽  
Author(s):  
Florian Meier ◽  
David D. Awschalom
Keyword(s):  
Quantum Dot ◽  
Quantum Wells ◽  
Faraday Rotation

CONTROLLED TELEPORTATION OF ELECTRON SPIN STATE IN QUANTUM DOT VIA SINGLE PHOTON

2008 ◽  
Vol 06 (03) ◽  
pp. 553-560
Author(s):  
YAN-WEI WANG ◽  
MING-FENG WANG ◽  
YI-ZHUANG ZHENG
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Electron Spin ◽  
Spin State ◽  
Faraday Rotation ◽  
Quantum Teleportation ◽  
Single Photon ◽  
Controlled Teleportation ◽  
Controlled Quantum Teleportation ◽  
Qubit System

A controlled quantum teleportation scheme of electron spin state in a quantum dot is proposed. With the entanglement generating through the interaction between the quantum dots in microcavities and a single photon, the controlled teleportation can be implemented using Faraday rotation and single photon measurements. The scheme can be easily generalized to multi-qubit system.

Specific heat of CdS/CdSe/CdS quantum-dot quantum wells

2008 ◽  
Vol 103 (6) ◽  
pp. 064310 ◽  
Author(s):  
I-Chuen Chen ◽  
Chih-Li Weng ◽  
Yan-Chr Tsai
Keyword(s):  
Quantum Dot ◽  
Specific Heat ◽  
Quantum Wells ◽  
Cds Quantum Dot

Optical Nmr From Single Quantum Dots

1996 ◽  
Vol 442 ◽  
Author(s):  
S. W. Brown ◽  
T. A. Kennedy ◽  
D. Gammon
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Quantum Wells ◽  
Optical Pumping ◽  
Nuclear Orientation ◽  
Energy Levels ◽  
Zeeman Splitting ◽  
Single Quantum ◽  
Interface Fluctuations ◽  
20 Nm

AbstractWe have observed nuclear magnetic resonance (NMR) signatures from constituent Ga and As nuclei in single GaAs quantum dots formed by interface fluctuations in GaAs/AlGaAs quantum wells. Orientation of the nuclear spin system by optical pumping causes an Overhauser shift in the excitonic energy levels proportional to the degree of nuclear orientation. NMR was detected by monitoring changes in the combined Overhauser plus Zeeman splitting of an exciton localized in a single quantum dot as the RF frequency was swept through a nuclear resonance. The NMR signals originate from ∼105 nuclei in the quantum dot — (20 nm)3 volume - representing an increase in sensitivity of five orders of magnitude over previous optical NMR measurements and thirteen orders of magnitude over conventional NMR. The data were fit to Lorentzian lineshapes, giving 75As linewidths on the order of 20 kHz.

Modeling of elastic, piezoelectric and optical properties of vertically correlated GaN/AlN quantum dots

2004 ◽  
Vol 831 ◽  
Author(s):  
Sławomir P. Łepkowski ◽  
Grzegorz Jurczak ◽  
Paweł Dłużewski ◽  
Tadeusz Suski
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Quantum Dot ◽  
Quantum Wells ◽  
Electrostatic Potential ◽  
Barrier Width ◽  
Base Diameter ◽  
Transition Energies ◽  
Band Transition ◽  
Hexagonal Pyramid

ABSTRACTWe theoretically investigate elastic, piezoelectric and optical properties of wurtzite GaN/AlN quantum dots, having hexagonal pyramid-shape, stacked in a multilayer. We show that the strain existing in quantum dots and barriers depends significantly on the distance between the dots i.e. on the width of AlN barriers. For typical QDs, having the base diameter of 19.5nm, the drop of the electrostatic potential in the quantum dot region slightly decreases with decreasing of the barrier width. This decrease is however much smaller for QDs than for superlattice of GaN/AlGaN quantum wells, with thickness similar to the height of QDs. Consequently, the band-to-band transition energies in the vertically correlated GaN/AlN QDs show unexpected, rather weak dependence on the width of AlN barriers. Increasing the QD base diameter leads to stronger decreasing dependence of the band-to-band transition energies vs. the width of AlN barriers, similar to that observed for superlattieces of QWs.

Optically Detected Magnetic Resonance Study of CdS/HgS/CdS Quantum Dot Quantum Wells

1999 ◽  
Vol 103 (33) ◽  
pp. 6870-6875 ◽  
Author(s):  
E. Lifshitz ◽  
H. Porteanu ◽  
A. Glozman ◽  
H. Weller ◽  
M. Pflughoefft ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Quantum Dot ◽  
Quantum Wells ◽  
Magnetic Resonance Study ◽  
Cds Quantum Dot ◽  
Optically Detected Magnetic Resonance ◽  
Optically Detected

Photo-induced Faraday rotation in GaAs/AlGaAs multiple quantum wells

2001 ◽  
Vol 94-95 ◽  
pp. 551-554 ◽  
Author(s):  
T. Kuroda ◽  
Y. Hashimoto ◽  
F. Minami
Keyword(s):  
Quantum Wells ◽  
Faraday Rotation ◽  
Multiple Quantum Wells ◽  
Multiple Quantum

QDs-CAVITY APPROACH TO TELEPORTATION OF MULTIPARTITE GHZ-LIKE ENTANGLED STATE

2009 ◽  
Vol 07 (02) ◽  
pp. 573-586 ◽  
Author(s):  
KE-XIANG HU ◽  
BAI-QI JIN
Keyword(s):  
Quantum Dot ◽  
Faraday Rotation ◽  
Single Photon ◽  
Success Probability ◽  
Single Mode ◽  
Entangled State ◽  
Single Photon Detection ◽  
Photon Detection ◽  
Faraday Rotation Angle ◽  
Cavity System

We study the teleportation of the entangled state in quantum dots system coupled by a single-mode cavity field. By the use of the single-photon detection, spin measurement and Faraday rotation in QDs-cavity system, we perform a teleportation of tripartite GHZ-Like state encoded in the electron spins of a three-quantum-dot system. The success probability of the scheme can reach unity if the cavities are switchable to choice the appropriate Faraday rotation angle. The scheme of the teleportation can be easily generalized to an N-quantum-dot system.

Sign in / Sign up

Export Citation Format

Share Document