Coherent and incoherent theories for photosynthetic energy transfer

MJ Tao, NN Zhang, PY Wen, FG Deng, Q Ai, GL Long - Science Bulletin, 2020 - Elsevier
There is a remarkable characteristic of photosynthesis in nature, that is, the energy transfer
efficiency is close to 100%. Recently, due to the rapid progress made in the experimental …

Fisher information in a quantum-critical environment

Z Sun, J Ma, XM Lu, X Wang - Physical Review A—Atomic, Molecular, and …, 2010 - APS
We consider a process of parameter estimation in a spin-j system surrounded by a quantum-
critical spin chain. Quantum Fisher information lies at the heart of the estimation task. We …

Quantum memory using a hybrid circuit with flux qubits and nitrogen-vacancy centers

XY Lü, ZL **ang, W Cui, JQ You, F Nori - Physical Review A—Atomic …, 2013 - APS
We propose how to realize high-fidelity quantum storage using a hybrid quantum
architecture including two coupled flux qubits and a nitrogen-vacancy center ensemble …

High-fidelity quantum memory using nitrogen-vacancy center ensemble for hybrid quantum computation

WL Yang, ZQ Yin, Y Hu, M Feng, JF Du - Physical Review A—Atomic, Molecular …, 2011 - APS
We study a hybrid quantum computing system using a nitrogen-vacancy center ensemble
(NVE) as quantum memory, a current-biased Josephson junction (CBJJ) superconducting …

A Bionic Compass Based on Multiradicals

JY Wu, XY Hu, HY Zhu, RQ Deng… - The Journal of Physical …, 2022 - ACS Publications
The underlying chemical and physical mechanism of avian navigation is an important issue
of broad interest. One of the most famous candidates is the radical-pair mechanism, which …

Demonstration of long-range correlations via susceptibility measurements in a one-dimensional superconducting Josephson spin chain

DM Tennant, X Dai, AJ Martinez, R Trappen… - npj Quantum …, 2022 - nature.com
Spin chains have long been considered an effective medium for long-range interactions,
entanglement generation, and quantum state transfer. In this work, we explore the properties …

Photon‐Assisted Quantum Phase Transitions in a Cavity Optomechanical System with Two Nonlinear Mechanical Modes

DK Jiang, R Zhang, Y Liu, LM Kuang - Annalen der Physik, 2024 - Wiley Online Library
Photon‐assisted quantum phase transitions (QPTs) are studied in a cavity optomechanical
system that consists of one optical cavity and two nonlinear mechanical resonators and …

Quantum repeater protocol in mixed single-and two-mode Tavis-Cummings models

M Ghasemi, MK Tavassoly - Europhysics Letters, 2018 - iopscience.iop.org
In this paper we study the production of entanglement between two atoms which are far from
each other. We consider a system including eight two-level atoms (1, 2,⋯, 8) such that any …

Theory of degenerate three-wave mixing using circuit QED in solid-state circuits

Y Cao, WY Huo, Q Ai, GL Long - Physical Review A—Atomic, Molecular, and …, 2011 - APS
We study the theory of degenerate three-wave mixing and the generation of squeezed
microwaves using circuit quantum electrodynamics in solid state circuits. The Hamiltonian …

Quantum temporal steering in a dephasing channel with quantum criticality

B Liu, Y Huang, Z Sun - Annalen der Physik, 2018 - Wiley Online Library
We investigate the quantum temporal steering (TS), ie, a temporal analogue of Einstein‐
Podolsky‐Rosen steering, in a dephasing channel which is modeled by a central spin half …