scholarly journals Adiabatic many-body state preparation and information transfer in quantum dot arrays

2015 ◽  
Vol 91 (13) ◽  
Author(s):  
Umer Farooq ◽  
Abolfazl Bayat ◽  
Stefano Mancini ◽  
Sougato Bose
Keyword(s):  
Quantum Dot ◽  
Information Transfer ◽  
Many Body ◽  
State Preparation ◽  
Body State

scholarly journals Nonequilibrium dynamics in an optical transition from a neutral quantum dot to a correlated many-body state

2013 ◽  
Vol 88 (16) ◽  
Author(s):  
F. Haupt ◽  
S. Smolka ◽  
M. Hanl ◽  
W. Wüster ◽  
J. Miguel-Sanchez ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Optical Transition ◽  
Nonequilibrium Dynamics ◽  
Many Body ◽  
Body State

scholarly journals Geometric Speed Limit of Accessible Many-Body State Preparation

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Marin Bukov ◽  
Dries Sels ◽  
Anatoli Polkovnikov
Keyword(s):  
Speed Limit ◽  
Many Body ◽  
State Preparation ◽  
Body State

scholarly journals Many-Body State Description of Single-Molecule Electroluminescence Driven by a Scanning Tunneling Microscope

Nano Letters ◽  
2019 ◽  
Vol 19 (5) ◽  
pp. 2803-2811 ◽  
Author(s):  
Kuniyuki Miwa ◽  
Hiroshi Imada ◽  
Miyabi Imai-Imada ◽  
Kensuke Kimura ◽  
Michael Galperin ◽  
...  
Keyword(s):  
Single Molecule ◽  
Scanning Tunneling Microscope ◽  
Scanning Tunneling ◽  
Many Body ◽  
Tunneling Microscope ◽  
Body State

Transport through several four-quantum-dot topological structures

2021 ◽  
pp. 2150393
Author(s):  
Qingshuang Zhi ◽  
Kongfa Chen ◽  
Zelong He
Keyword(s):  
Quantum Dot ◽  
Coupling Strength ◽  
Bound States ◽  
Resonance Peak ◽  
Coulomb Interactions ◽  
Many Body ◽  
Body Effect ◽  
Topological Structures ◽  
Resonance Band ◽  
Interdot Coupling

In this paper, several four-quantum-dot topological structures are designed. The influence of the interdot coupling strength and intradot Coulomb interactions on the conductance is discussed. The location of the anti-resonance band can be manipulated by tuning the interdot coupling strength, which suggests a physical scheme of an effective quantum switch. The Fano anti-resonance peak may evolve into a resonance peak. For the particular value of the interdot coupling strength, two Fano anti-resonances collapse and bound states in the continuum are formed. Moreover, many-body effect makes the number of anti-resonance bands increase. This study provides a theoretical basis for the design of quantum computing devices.

Condensation signatures of a degenerate many-body state of interlayer excitons in a van der Waals MoSe2–WSe2 heterostack

2021 ◽  
Author(s):  
Lukas Sigl ◽  
Florian Sigger ◽  
Mirco Troue ◽  
Kenji Watanabe ◽  
Takashi Taniguchi ◽  
...  
Keyword(s):  
Van Der Waals ◽  
Many Body ◽  
Body State

scholarly journals Direct optical state preparation of the dark exciton in a quantum dot

2015 ◽  
Vol 92 (20) ◽  
Author(s):  
S. Lüker ◽  
T. Kuhn ◽  
D. E. Reiter
Keyword(s):  
Quantum Dot ◽  
State Preparation ◽  
Dark Exciton

scholarly journals Quantum interface of an electron and a nuclear ensemble

Science ◽  
2019 ◽  
Vol 364 (6435) ◽  
pp. 62-66 ◽  
Author(s):  
D. A. Gangloff ◽  
G. Éthier-Majcher ◽  
C. Lang ◽  
E. V. Denning ◽  
J. H. Bodey ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Nuclear Spin ◽  
Building Blocks ◽  
Spin Excitation ◽  
Many Body ◽  
Quantum Objects ◽  
All Optical ◽  
Spin Qubit ◽  
Many Body Systems ◽  
Optical Rotations

Coherent excitation of an ensemble of quantum objects underpins quantum many-body phenomena and offers the opportunity to realize a memory that stores quantum information. Thus far, a deterministic and coherent interface between a spin qubit and such an ensemble has remained elusive. In this study, we first used an electron to cool the mesoscopic nuclear spin ensemble of a semiconductor quantum dot to the nuclear sideband–resolved regime. We then implemented an all-optical approach to access individual quantized electronic-nuclear spin transitions. Lastly, we performed coherent optical rotations of a single collective nuclear spin excitation—a spin wave. These results constitute the building blocks of a dedicated local memory per quantum-dot spin qubit and promise a solid-state platform for quantum-state engineering of isolated many-body systems.

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