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Publications

Search Publications by

Garnett W. Bryant (Fed)

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Displaying 1 - 25 of 160

Strong coupling between a topological insulator and a III-V heterostructure at terahertz frequency

March 8, 2022
Author(s)
Garnett W. Bryant, D. Quang To, Zhengtianye Wang, Q. Dai Ho, Ruiqi Hu, Wilder Acuna, Yongchen Liu, Anderson Janotti, Joshua Zide, Stephanie Law, Matthew Doty
We probe theoretically the emergence of strong coupling in a system consisting of a topological insulator (TI) and a III-V heterostructure using a numerical approach based on the scattering matrix formalism. Speci cally, we investigate the interactions

Modification of the optical properties of molecular chains upon coupling to adatoms

December 13, 2021
Author(s)
Garnett W. Bryant, Marvin Muller, Miriam Kosik, Marta Pelc, Karolina Slowik, Andres Ayuela, Carsten Rockstuhl
Adsorbed atoms (adatoms) coupled to the matrix of solid state host materials as impurities can signi cantly modify their properties. Especially in low-dimensional materials, such as one-dimensional organic polymer chains or quasi-one-dimensional graphene

Efficient Computation of Optical Forces With the Coupled Dipole Method

October 12, 2021
Author(s)
P C. Chaumet, Adel Rahmani, A Sentenac, Garnett W. Bryant
We present computational techniques to compute in an efficient way optical forces on arbitrary nanoobjects using the coupled dipole method. We show how the time of computation can be reduced by several orders of magnitude with the help of fast-Fourier

Exciton-Plasmon Interaction and Hybrid Excitons in Semiconductor-Metal Nanoparticle Assemblies

October 12, 2021
Author(s)
A O. Govorov, Garnett W. Bryant, Wei Zhang, T Skieni, J Lee, N A. Kotov, Joseph M. Slocik, Rajesh R. Naik
We describe physical properties of excitons in hybrid complexes composed of semiconductor and metal nanoparticles. The interaction between individual nanoparticles is revealed as an enhancement or suppression of emission. Enhanced emission comes from

Strain and Spin-Orbit Effects in Self-Assembled Quantum Dots

October 12, 2021
Author(s)
M Zielinski, W Jaskolski, Javier Aizpurua, Garnett W. Bryant
The effects of strain and spin-orbit interaction in self-assembled lens-shaped InAs/GaAs quantum dots are investigated. Calculations are performed with empirical tight-binding theory supplemented by the valence force field method to account for effects of

Theory of InP Nanocrystals Under Pressure

October 12, 2021
Author(s)
J G. Diaz-Garcia, Garnett W. Bryant, W Jaskolski
An empirical tight-binding theory which includes the effects of lattice relaxation is employed to investigate the opto-electronic properties of InP nanocrystals under an external hydrostatic pressure. For bulk InP, our model describes accurately the

From single-particle-like to interaction-mediated plasmonic resonances in graphene nanoantennas

March 4, 2021
Author(s)
Marvin M. Muller, Miriam Kosik, Marta Pelc, Garnett W. Bryant, Andres Ayuela, Carsten Rockstuhl, Karolina Slowik
Plasmonic nanostructures attract tremendous attention as they confine electromagnetic fields well below the diffraction limit while simultaneously sustaining extreme local field enhancements. To fully exploit these properties, the identification and

Spin-mechanical coupling of an InAs quantum dot embedded in a mechanical resonator

December 14, 2018
Author(s)
S G. Carter, A S. Bracker, Garnett W. Bryant, M Kim, C S. Kim, M Zalalutdinov, M. K. Yakes, C Czarnocki, J Casara, M Scheibner, D Gammon
We demonstrate strain-induced coupling between a hole spin in a quantum dot and mechanical motion of a cantilever. The optical transitions of quantum dots integrated into GaAs mechanical resonators are measured synchronously with the motion of the driven

Spin decoherence in a two-qubit CPHASE gate: the critical role of tunneling noise

November 27, 2018
Author(s)
Peihao Huang, Neil M. Zimmerman, Garnett W. Bryant
The rapid progress in the manipulation and detection of semiconductor spin qubits enables the experimental demonstration of a high fidelity two-qubit logic gate, which is necessary for universal quantum computing. Here, we study the decoherence of two

Spin relaxation of a donor electron coupled to interface states

November 16, 2018
Author(s)
Peihao Huang, Garnett W. Bryant
An electron spin qubit in a silicon donor atom is a promising candidate for quantum information processing because of its long coherence time. To be sensed with a single-electron transistor, the donor atom is usually located near an interface, where the