Results 41 to 50 of about 668,121 (290)

Towards the Fundamental Quantum Limit of Linear Measurements of Classical Signals [PDF]

, 2017
The quantum Cram\'er-Rao bound (QCRB) sets a fundamental limit for the measurement of classical signals with detectors operating in the quantum regime.
Adhikari, Rana X, Chen, Yanbei, Ma, Yiqiu, Miao, Haixing, Pang, Belinda   +4 more
core   +4 more sources

Quantum measurements and contextuality [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2019
In quantum physics, the term ‘contextual’ can be used in more than one way. One usage, here called ‘Bell contextual’ since the idea goes back to Bell, is that if A , B and C are three quantum observables, with A compatible (i.e. commuting) with
openaire   +4 more sources

Methodology for replacing indirect measurements with direct measurements

, 2019
In quantum computing, the indirect measurement of unitary operators such as the Hadamard test plays a significant role in many algorithms. However, in certain cases, the indirect measurement can be reduced to the direct measurement, where a quantum state
Fujii, Keisuke, Mitarai, Kosuke
core   +1 more source

Linear Quantum Measurements [PDF]

, 2003
Linear response theory describes quantum measurement with an arbitrary detector weakly coupled to a measured system. This description produces generic quantitative relation characterizing the detector that is analogous to the fluctuation-dissipation theorem for equilibrium systems.
openaire   +2 more sources

Expansion Dynamics of Rydberg-Dressed Ultracold Fermi Gas

Photonics
We present a theoretical investigation into the expansion dynamics of Rydberg-dressed ultracold Fermi gases. The effective interaction potential induced by Rydberg dressing significantly modifies the intrinsic properties and dynamical behavior of the ...
Meimei Wu, Xin Bao, Shuxian Yu, Shujin Deng, Haibin Wu   +4 more
doaj   +1 more source

Phase Space Formulation of Quantum Mechanics. Insight into the Measurement Problem

, 2004
A phase space mathematical formulation of quantum mechanical processes accompanied by and ontological interpretation is presented in an axiomatic form.
D Dragoman, de Gosson M, de Gosson M A, Dragoman D, Dragoman D, Dragoman D, Kim Y S, Lichtenberg A J, Mermin N D, Schleich W P, von Neumann J, Wheeler J A, Wheeler J A   +12 more
core   +1 more source

Brillouin–Mandelstam scattering in telecommunications optical fiber at millikelvin temperatures

APL Photonics
Brillouin–Mandelstam scattering is a strong and readily accessible optical nonlinearity, enabling a wide array of applications and research directions.
E. A. Cryer-Jenkins, A. C. Leung, H. Rathee, A. K. C. Tan, K. D. Major, M. R. Vanner   +5 more
doaj   +1 more source

The role of quantum measurement in stochastic thermodynamics

, 2016
This article sets up a new formalism to investigate stochastic thermodynamics in the quantum regime, where stochasticity and irreversibility primarily come from quantum measurement. In the absence of any bath, we define a purely quantum component to heat
Auffèves, Alexia, Clusel, Maxime, Elouard, Cyril, Herrera-Martí, David   +3 more
core   +3 more sources

Colorectal cancer‐derived FGF19 is a metabolically active serum biomarker that exerts enteroendocrine effects on mouse liver

Molecular Oncology, EarlyView.
Meta‐transcriptome analysis identified FGF19 as a peptide enteroendocrine hormone associated with colorectal cancer prognosis. In vivo xenograft models showed release of FGF19 into the blood at levels that correlated with tumor volumes. Tumoral‐FGF19 altered murine liver metabolism through FGFR4, thereby reducing bile acid synthesis and increasing ...
Jordan M. Beardsley, Michael W. Rohr, Joseph A. Goode, Sai Preethi Nakkina, Jignesh G. Parikh, Deborah A. Altomare   +5 more
wiley   +1 more source

Low-loss superconducting resonators fabricated from tantalum films grown at room temperature

Communications Materials
The use of α-tantalum in superconducting circuits has enabled a considerable improvement in the coherence time of transmon qubits. The standard approach to grow α-tantalum thin films on silicon involves heating the substrate, which takes several hours ...
Guillaume Marcaud, David Perello, Cliff Chen, Esha Umbarkar, Conan Weiland, Jiansong Gao, Sandra Diez, Victor Ly, Neha Mahuli, Nathan D’Souza, Yuan He, Shahriar Aghaeimeibodi, Rachel Resnick, Cherno Jaye, Abdul K. Rumaiz, Daniel A. Fischer, Matthew Hunt, Oskar Painter, Ignace Jarrige   +18 more
doaj   +1 more source