The Quantum Coherence in Terms of Phase-Sensitive Nonadiabatic Dressed States
I. G. Koprinkov
备注：
This article has been accepted by AIP Conference Proceedings, 50th International Conference Applications of Mathematics in Engineering and Economics, AMEE 2024, 7 - 13 June 2024, Sozopol, Bulgaria. After it is published, it will be found at Link
The quantum coherence is considered within phase-sensitive nonadiabatic dressed states. Two types of phase correlations are found: a rapidly changing phase correlation between the real and the virtual components and a stationary phase correlation between different virtual components of these states.
Because of using geometric phases, nonadiabatic geometric gates have the robustness against control errors. On the other hand, decoherence still affects nonadiabatic geometric gates, which is a key factor in reducing their fidelities. In this paper, we show that based on the system Hamiltonian that realizes a nonadiabatic geometric gate, one may construct a new system Hamiltonian, by using which not only the geometric feature of the nonadiabatic geometric gate is preserved, but also the system's coherence is protected. As a result, a coherence-protected nonadiabatic geometric gate is realized …
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Theoretical and Computational Chemistry Institute, Heinrich-Heine-Universität Düsseldorf（杜塞尔多夫大学理论与计算化学研究所）
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Interplay between dressed and strong-axial-field states in Nitrogen-Vacancy centers for quantum sensing and computation
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Experimental Demonstration of a Measurement-Feedback Quantum Information Engine
Quantum Information Institute, School of Physics and Laboratory of Zhongyuan Light, Zhengzhou University（郑州大学物理学院量子信息研究所中原光实验室）；Department of Physics, Nanchang University（南昌大学物理系）
All-mechanical coherence protection and fast control of a spin qubit
John A. Paulson School for Engineering and Applied Sciences, Harvard University（哈佛大学约翰·A·保尔森工程与应用科学学院）；Pritzker School of Molecular Engineering, University of Chicago（芝加哥大学普里茨克分子工程学院）；IonQ；Q-CTRL；Nubis Communications；Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften（巴伐利亚科学院瓦尔特·迈斯纳研究所）
Dark state spectroscopy in nonlinear waveguide quantum electrodynamics
Andrew and Erna Viterbi Department of Electrical & Computer Engineering, Technion - Israel Institute of Technology（安德鲁和埃尔纳·维特比电气与计算机工程系，以色列理工学院）；Helen Diller Quantum Center, Technion - Israel Institute of Technology（海伦·迪勒量子中心，以色列理工学院）
Coherence Protection for Mobile Spin Qubits in Silicon
Leiden University（莱顿大学）；Delft University of Technology（代尔夫特理工大学）；QuTech；Kavli Institute of Nanoscience, Delft University of Technology（代尔夫特理工大学卡弗里纳米科学研究所）；Netherlands Organization for Applied Scientific Research (TNO)（荷兰应用科学研究组织）
We discuss phonon-induced non-Markovian and Markovian features in QD-based optics. We cover lineshapes in linear absorption experiments, phonon-induced incoherence in the Heitler regime, and memory correlations in two-photon coherences. To quantitatively and qualitatively understand the underlying physics, we present several theoretical models which model the non-Markovian properties of the electron-phonon interaction accurately in different regimes. Examples are the Heisenberg equation of motion approach, the polaron master equation, and Liouville-propagator techniques in the independent boso…
