The quantum Fisher information is a central quantity in quantum metrology and is the quantum analogue of the classical Fisher information. The quantum Fisher information of a state with respect to the observable is defined as where and are the eigenvalues and eigenvectors of the density matrix respectively, and the summation goes over all and such that . When the observable generates a unitary transformation of the system with a parameter from initial state , the quantum Fisher information constrains the achievable precision in statistical estimation of the parameter via the quantum Cramér–Rao bound as where is the number of independent repetitions. It is often desirable to estimate the magnitude of an unknown parameter that controls the strength of a system's Hamiltonian with respect to a known observable during a known dynamical time . In this case, defining , so that , means estimates of can be directly translated into estimates of . (Wikipedia).
What Is Quantum Computing | Quantum Computing Explained | Quantum Computer | #Shorts | Simplilearn
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From playlist #Shorts | #Simplilearn
Quantum Operators for measurements of Energy, Position, and Momentum in Quantum Physics. My Patreon page is at https://www.patreon.com/EugeneK
From playlist Physics
Artificial General Intelligence | Tim Ferriss & Eric Schmidt | GEONOW
✅ Subscribe: https://bit.ly/3slupxs Quantum AI is the use of quantum computing for computation of machine learning algorithms. Thanks to computational advantages of quantum computing, quantum AI can help achieve results that are not possible to achieve with classical computers. Quantum da
From playlist ML & Deep Learning
Quantum Computer in a Nutshell (Documentary)
The reservoir of possibilities offered by the fundamental laws of Nature, is the key point in the development of science and technology. Quantum computing is the next step on the road to broaden our perspective from which we currently look at the Universe. The movie shows the history of pr
From playlist Quantum computing
Quantized Energy Equation (Quantum Physics)
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From playlist Quantum Mechanics
Quantum Physics Full Course | Quantum Mechanics Course
Quantum physics also known as Quantum mechanics is a fundamental theory in physics that provides a description of the physical properties of nature at the scale of atoms and subatomic particles. It is the foundation of all #quantum #physics including quantum chemistry, quantum field theory
From playlist Quantum Mechanics
Restoring Heisenberg scaling in noisy quantum metrology (...) - M. Genoni - Workshop 2 - CEB T2 2018
Marco Genoni (Univ. Milano) / 06.06.2018 Restoring Heisenberg scaling in noisy quantum metrology by monitoring the environment We study quantum frequency estimation for N qubits subjected to independent Markovian noise, via strategies based on time-continuous monitoring of the environmen
From playlist 2018 - T2 - Measurement and Control of Quantum Systems: Theory and Experiments
Seize the Moments: Enhancing Moment Estimation (...) - M. Tsang - PRACQSYS 2018 - CEB T2 2018
Mankei Tsang (Department of Electrical and Computer Engineering, National University of Singapore, Singapore & Department of Physics, National University of Singapore, Singapore) / 05.07.2018 Seize the Moments: Enhancing Moment Estimation for Subdiffraction Incoherent Imaging Inspired by
From playlist 2018 - T2 - Measurement and Control of Quantum Systems: Theory and Experiments
The Grand Unified Theory of Quantum Metrology - R. Demkowicz-Dobrzanski - Workshop 1 - CEB T2 2018
Rafal Demkowicz-Dobrzanski (Univ. Warsaw) / 15.05.2018 The Grand Unified Theory of Quantum Metrology A general model of unitary parameter estimation in presence of Markovian noise is considered, where the parameter to be estimated is associated with the Hamiltonian part of the dynamics.
From playlist 2018 - T2 - Measurement and Control of Quantum Systems: Theory and Experiments
Ever heard of Quantum Operators and Commutators? (Explained for Beginners)!
What is a quantum operator? And just how useful are quantum commutators? Find out how they help us understand the Ehrenfest Theorem! Hi everyone, I'm back with a new video! This time it's the first in a two-part mini-series on one of the coolest theorems in quantum mechanics - Ehrenfest's
From playlist Quantum Physics by Parth G
Sloppiness and Parameter Identifiability, Information Geometry by Mark Transtrum
26 December 2016 to 07 January 2017 VENUE: Madhava Lecture Hall, ICTS Bangalore Information theory and computational complexity have emerged as central concepts in the study of biological and physical systems, in both the classical and quantum realm. The low-energy landscape of classical
From playlist US-India Advanced Studies Institute: Classical and Quantum Information
Emergent topology in quenched quantum systems by Amit Dutta
DATES Monday 20 Jun, 2016 - Wednesday 29 Jun, 2016 VENUE Ramanujan Lecture Hall, ICTS Bangalore APPLY Understanding strongly interacting quantum many body systems is one of the major frontiers in present day physics. Condensed matter physics provides a wide panoply of systems where strong
From playlist School on Current Frontiers in Condensed Matter Research
Why do simple models work? Partial answers from information geometry (Lecture 1) by Ben Machta
26 December 2016 to 07 January 2017 VENUE: Madhava Lecture Hall, ICTS Bangalore Information theory and computational complexity have emerged as central concepts in the study of biological and physical systems, in both the classical and quantum realm. The low-energy landscape of classical
From playlist US-India Advanced Studies Institute: Classical and Quantum Information
What Is The Uncertainty Principle?
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From playlist Science Unplugged: Quantum Mechanics
The Map of Quantum Computing | Quantum Computers Explained
An excellent summary of the field of quantum computing. Find out more about Qiskit at https://qiskit.org and their YouTube channel https://www.youtube.com/c/qiskit And get the poster here: https://store.dftba.com/collections/domain-of-science/products/map-of-quantum-computing With this vi
From playlist Quantum Physics Videos - Domain of Science
Concentration of quantum states from quantum functional (...) - N. Datta - Workshop 2 - CEB T3 2017
Nilanjana Datta / 24.10.17 Concentration of quantum states from quantum functional and transportation cost inequalities Quantum functional inequalities (e.g. the logarithmic Sobolev- and Poincaré inequalities) have found widespread application in the study of the behavior of primitive q
From playlist 2017 - T3 - Analysis in Quantum Information Theory - CEB Trimester
Theory of disorder-induced half-integer thermal Hall conductance by Mitali Banerjee
DISCUSSION MEETING : EDGE DYNAMICS IN TOPOLOGICAL PHASES ORGANIZERS : Subhro Bhattacharjee, Yuval Gefen, Ganpathy Murthy and Sumathi Rao DATE & TIME : 10 June 2019 to 14 June 2019 VENUE : Madhava Lecture Hall, ICTS Bangalore Topological phases of matter have been at the forefront of r
From playlist Edge dynamics in topological phases 2019
Towards superresolution surface metrology: Quantum (...) - G. Adesso - Workshop 1 - CEB T2 2018
Gerardo Adesso (Univ. Nottingham) / 15.05.2018 Towards superresolution surface metrology: Quantum estimation of angular and axial separations We investigate localization of two incoherent point sources with arbitrary angular and axial separations in the paraxial approximation. By using q
From playlist 2018 - T2 - Measurement and Control of Quantum Systems: Theory and Experiments
Identification and information geometry of quantum (...) - M. Guta - Workshop 2 - CEB T3 2017
Madalin Guta / 26.10.17 Identification and information geometry of quantum input-output systems This talk deals with the problem of identifying and estimating dynamical parameters of continuous-time quantum open systems, in the input-output formalism. I will discuss several aspects of th
From playlist 2017 - T3 - Analysis in Quantum Information Theory - CEB Trimester