Results 81 to 90 of about 41,273 (213)

Cryptographic quantum metrology [PDF]

Physical Review A, 2019
We develop a general framework for parameter estimation that allows only trusted parties to access the result and achieves optimal precision. The protocols are designed such that adversaries can access some information indeterministically, but only at the risk of getting caught (cheat-sensitivity); under the assumption that the adversary can access the
HUANG, ZIXIN, Macchiavello, Chiara, Maccone, Lorenzo   +2 more
openaire   +3 more sources

Electrostatic Potential Complementarity for Thickness‐Tolerant Cathode Interlayers in High‐Efficiency Organic and Tandem Solar Cells

Advanced Science, EarlyView.
Two model molecules — trimesic acid (TMA) and phloroglucinol (PG) — with opposite central electrostatic potential (ESP) distributions are employed to elucidate how molecular electrostatic interactions regulate the cathode interlayer (CIL) PDINN. Electrostatic potential complementarity is revealed as the intrinsic origin of thickness sensitivity in CILs,
Xiaoman Ding, Dana Mukasheva, Jiaxu Che, Guangye Zhang, Xiuze Hei, Haoran Lin, Jie Lv, Patrick Fong, Zhiwei Ren, Annie Ng, Mingjian Yuan, Hongyu Zhang, Gang Li, Hanlin Hu   +13 more
wiley   +1 more source

Coherence enhanced quantum metrology in a nonequilibrium optical molecule

New Journal of Physics, 2018
We explore the quantum metrology in an optical molecular system coupled to two environments with different temperatures, using a quantum master equation beyond secular approximation.
Zhihai Wang, Wei Wu, Guodong Cui, Jin Wang   +3 more
doaj   +1 more source

Quantum Dots for Biomedical Biosensing, NIR‐II Bioimaging, and Phototherapy: Materials Design, Signal Transduction, and Translational Barriers

Advanced Science, EarlyView.
This review outlines bottom‐up and biomimetic fabrication strategies of quantum dots, and highlights their emerging applications in biosensing, multimodal bioimaging, and intelligent cancer theranostics. It further discusses key translational barriers and future perspectives for advancing QD‐based nanomedicine toward clinical implementation.
Jie Ju, Zhifang Liu, Xinran Gao, Wen Sun, Wei Fu, Yanfei Wang   +5 more
wiley   +1 more source

Cascaded multiparameter quantum metrology

Physical Review A
We present an innovative, platform-independent concept for multiparameter sensing where the measurable parameters are in series, or cascaded, enabling measurements as a function of position. With temporally resolved detection, we show that squeezing can give a quantum enhancement in sensitivity over that of classical states by a factor of $e^{2r ...
Gregory Krueper, Lior Cohen, Juliet T. Gopinath   +2 more
openaire   +2 more sources

Approaching the critical point through an exact ground-state evolution

Physical Review Research
We investigate critical quantum metrology in a system where a qubit is dispersively coupled to a parametrically driven bosonic field. By engineering a counterdiabatic driving Hamiltonian under realistic physical constraints, we demonstrate a high ...
Jun-Hao Lin, Ke-Xiong Yan, Jie Song, Ye-Hong Chen, Yan Xia   +4 more
doaj   +1 more source

Enhanced parameter estimation by measurement of non-Hermitian operators

AAPPS Bulletin, 2023
Quantum metrology aims at delivering new quantum-mechanical improvement to technologies of parameter estimations with precision bounded by the quantum Cramér-Rao bound.
Jianning Li, Haodi Liu, Zhihai Wang, X. X. Yi   +3 more
doaj   +1 more source

Chemical compass model for avian magnetoreception as a quantum coherent device

, 2013
It is known that more than 50 species use the Earth's magnetic field for orientation and navigation. Intensive studies particularly behavior experiments with birds, provide support for a chemical compass based on magnetically sensitive free radical ...
Cai, Jianming, Plenio, Martin B.
core   +1 more source

Twisted MoS2 Bilayers as Functional Elements in Memtransistors: Hysteresis, Optical Signatures, and Photocurrent Kinetics

Advanced Electronic Materials, EarlyView.
ABSTRACT Layered 2D materials are considered as promising for memristive applications due to their ultimate vertical scalability compared to conventional semiconductor films and pronounced hysteresis properties. Bias‐resolved Raman and Photoluminescence mapping is used to quantify strain from phonon shifts and carrier density from the exciton‐trion ...
Vladislav Kurtash, Ilya Eliseyev, Valery Davydov, Heiko O. Jacobs, Jörg Pezoldt   +4 more
wiley   +1 more source

Quantum spin squeezing

, 2011
This paper reviews quantum spin squeezing, which characterizes the sensitivity of a state with respect to an SU(2) rotation, and is significant for both entanglement detection and high-precision metrology.
Ma, Jian, Nori, Franco, Sun, C. P., Wang, Xiaoguang   +3 more
core   +2 more sources