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Displaying 3426 - 3450 of 4637

Electromagnetically induced transparency in a superconducting three-level system

April 16, 2009
Author(s)
Mika Sillanpaa, Katarina Cicak, Fabio Altomare, Jae Park, Raymond Simmonds, Jian Li, G. S. Paraoanu, Pertti Hakonen
When a three-level quantum system is irradiated by an intense coupling field resonant with two of the three possible transitions, the resonant absorption of the system from its ground state by an additional radiation field is suppressed. This effect, where

Effects of Random Localizing Events on Matter Waves: Formalism and Examples

October 16, 2008
Author(s)
J Gea-Banacloche
A formalism is introduced to describe a number of physical processes that may break down the coherence of a matter wave over a characteristic length scale l. In a second-quantized description, an appropriate master equation for a set of bosonic modes (such

Designing high electron mobility transistor heterostructures with quantum dots for efficient, number-resolving photon detection

May 1, 2008
Author(s)
Mary A. Rowe, Eric Gansen, M. Greene, Danna Rosenberg, Todd E. Harvey, Mark Su, Robert Hadfield, Sae Woo Nam, Richard P. Mirin
We describe the design of the epitaxial layers for an efficient, photon-number-determining detector that utilizes a layer of self-assembled quantum dots as an optically addressable gate in a field-effect transistor. Our design features a dedicated

Effects of Humidity on Unencapsulated Poly(thiophene) Thin Film Transistors

March 13, 2006
Author(s)
Michael L. Chabinyc, Fred Endicott, B D. Vogt, Dean DeLongchamp, Eric K. Lin, Yiliang Wu, Ping Liu, Beng S. Ong
The effects of humidity on unencapsulated polymeric thin-film transistors (TFTs) were investigated. TFTs were fabricated on glass substrates with inorganic gate dielectric and a semiconducting layer of poly[5,5 -bis(3-dodecyl-2-thienyl)-2,2 -bithiophene]

A chip-scale atomic clock based on 87 Rb with improved frequency stability

February 21, 2005
Author(s)
Svenja A. Knappe, P Schwindt, V Shah, Leo W. Hollberg, John E. Kitching, Li-Anne Liew, John Moreland
We demonstrate a microfabricated atomic clock physics package based on coherent population trapping (CPT) of 87Rb atoms. The package occupies a volume of 12 mm 3 and requires 195 mW of power to operate. Compared to a previous microfabricated clock exciting

Substrate Effects on Indentation Plastic Zone Development in Thin Soft Films

November 1, 2001
Author(s)
D E. Kramer, A A. Volinsky, N R. Moody, W Gerberich
Plastic zone evolution in A1-2 wt% Si metal films on silicon and sapphire substrates was studied using nanoindentation and atomic force microscopy (AFM). AFM was used to measure the extent of plastic pileup which is a measure of the plastic zone radius in

Decoherence of Quantum Superpositions Through Coupling to Engineering Reservoirs

January 1, 2000
Author(s)
C J. Myatt, B E. King, Q A. Turchette, C A. Sackett, D Kielpinski, Wayne M. Itano, W M. Monroe, David J. Wineland
The theory of quantum mechanics applies to closed systems. In such ideal situations, a single atom can, for example, exist simultaneously in a superposition of two different spatial locations. In contrast, real systems always interact with their

The Theory of Bose-Einstein Condensation of Dilute Gases

December 1, 1999
Author(s)
Karen G. Burnett, M Edwards, Charles W. Clark
In this article, we present a current perspective on advances in the theoretical understanding of Bose-Einstein condensation from the standpoint of atomic, molecular and optical (AMO) physics. In AMO physics, BEC has come to be perceived both as an

Topological Hall Effect Induced by Chiral Fluctuations in ErMn6Sn6

September 24, 2024
Author(s)
Kyle Fruhling, Alenna Streeter, Sougata Mardanya, Xiaoping Wang, Priya Baral, Oksana Zaharko, Igor Mazin, Sugata Chowdhury, William Ratcliff, Fazel Tafti
… between Mn kagome layers. In YMn6Sn6, the rare-earth ion Y3+ is nonmagnetic. When it is replaced by a magnetic ion (Gd3+ − Ho3+), the intrinsically antiferromagnetic Mn-Mn …

Emergent Electric Field Control of Phase Transformation in Oxide Superlattices

February 1, 2020
Author(s)
Di Yi, Yujia Wang, Olaf M. J. van t'Erve, Liubin Xu, Hongtao Yuan, Michael J. Veit, Purnima P. Balakrishnan, Yongseong Choi, Alpha T. N'Diaye, Padraic Shafer, E. Arenholz, Alexander Grutter, Haixuan Xu, Pu Yu, Berend T. Jonker, Yuri Suzuki
… can generate large electric fields and voltage-driven ion transfer 1,2 , has been identified as a powerful means to …
Displaying 3426 - 3450 of 4637
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