Quantum Theory

2021 ◽  
Author(s):  
Jochen Rau
Keyword(s):  
Information Processing ◽  
Quantum Theory ◽  
Experimental Evidence ◽  
New World ◽  
Traditional Approach ◽  
Quantum Computers ◽  
Classical Description ◽  
Statistical Correlations ◽  
New Perspective ◽  
Quantum Technology

Recent advances in quantum technology – from quantum computers and simulators to communication and metrology – have not only opened up a whole new world of applications but also changed the understanding of quantum theory itself. This text introduces quantum theory entirely from this new perspective. It does away with the traditional approach to quantum theory as a theory of microscopic matter, and focuses instead on quantum theory as a framework for information processing. Accordingly, the emphasis is on concepts like measurement, probability, statistical correlations, and transformations, rather than waves and particles. The text begins with experimental evidence that forces one to abandon the classical description and to re-examine such basic notions as measurement, probability, and state. Thorough investigation of these concepts leads to the alternative framework of quantum theory. The requisite mathematics is developed and linked to its operational meaning. This part of the text culminates in an exploration of some of the most vexing issues of quantum theory, regarding locality, non-contextuality, and realism. The second half of the text explains how the peculiar features of quantum theory are harnessed to tackle information processing tasks that are intractable or even impossible classically. It provides the tools for understanding and designing the pertinent protocols, and discusses a range of examples representative of current quantum technology.

Overcoming stereotypes in leasing

2017 ◽  
pp. 136-152 ◽  
Author(s):  
V. Gazman
Keyword(s):  
Real Estate ◽  
Traditional Approach ◽  
Critical Assessment ◽  
Variable Character ◽  
New Perspective

If we want securitization to become one of the main channels to attract funding in leasing activity, as the Bank of Russia predicts, one needs to revise some stereotypes. Relying on foreign and domestic research, the author gives a critical assessment of the postulate of the need for uniformity of securitized assets; proves that real estate, contrary to the traditional approach, rather than equipment and transport, prevails in securitization transactions, and explains why this happens. The article presents a new perspective on the behavior of issu- ers concerning the timing of securities circulation; considers feasibility approach to the calculation of variable character of leverage in leasing; explains pro and contra of evaluating the leasing market based on the volume of the portfolio of contracts; reveals the validity of ratings of bonds issued in the course of secu- ritization of leasing assets.

scholarly journals Decoherence dynamics estimation for superconducting gate-model quantum computers

2020 ◽  
Vol 19 (10) ◽  
Author(s):  
Laszlo Gyongyosi
Keyword(s):  
Gaussian Noise ◽  
Quantum Computer ◽  
Computer Architectures ◽  
Quantum Circuits ◽  
Optimal Placement ◽  
Quantum Computers ◽  
Intermediate Scale ◽  
Layout Generation ◽  
Quantum Technology ◽  
Physical Layout

Abstract Superconducting gate-model quantum computer architectures provide an implementable model for practical quantum computations in the NISQ (noisy intermediate scale quantum) technology era. Due to hardware restrictions and decoherence, generating the physical layout of the quantum circuits of a gate-model quantum computer is a challenge. Here, we define a method for layout generation with a decoherence dynamics estimation in superconducting gate-model quantum computers. We propose an algorithm for the optimal placement of the quantum computational blocks of gate-model quantum circuits. We study the effects of capacitance interference on the distribution of the Gaussian noise in the Josephson energy.

scholarly journals Information Length as a Useful Index to Understand Variability in the Global Circulation

Mathematics ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 299 ◽  
Author(s):  
Eun-jin Kim ◽  
James Heseltine ◽  
Hanli Liu
Keyword(s):  
Climate Model ◽  
Traditional Approach ◽  
Essential Feature ◽  
Complex Form ◽  
Time Dependent ◽  
Spatial Gradient ◽  
Mean Values ◽  
Global Circulation ◽  
New Perspective ◽  
Non Gaussian

With improved measurement and modelling technology, variability has emerged as an essential feature in non-equilibrium processes. While traditionally, mean values and variance have been heavily used, they are not appropriate in describing extreme events where a significant deviation from mean values often occurs. Furthermore, stationary Probability Density Functions (PDFs) miss crucial information about the dynamics associated with variability. It is thus critical to go beyond a traditional approach and deal with time-dependent PDFs. Here, we consider atmospheric data from the Whole Atmosphere Community Climate Model (WACCM) and calculate time-dependent PDFs and the information length from these PDFs, which is the total number of statistically different states that a system evolves through in time. Specifically, we consider the three cases of sampling data to investigate the distribution of information (information budget) along the altitude and longitude to gain a new perspective of understanding variabilities, correlation among different variables and regions. Time-dependent PDFs are shown to be non-Gaussian in general; the information length tends to increase with the altitude albeit in a complex form; this tendency is more robust for flows/shears than temperature. Much similarity among flows and shears in the information length is also found in comparison with the temperature. This means a strong correlation among flows/shears because of their coupling through gravity waves in this particular WACCM model. We also find the increase of the information length with the latitude and interesting hemispheric asymmetry for flows/shears/temperature, with the tendency of anti-correlation (correlation) between flows/shears and temperature at high (low) latitude. These results suggest the importance of high latitude/altitude in the information budget in the Earth’s atmosphere, the spatial gradient of the information length being a useful proxy for information flow.

scholarly journals The development of a model for geodesic learning: The geodesic information processing model

1997 ◽  
Vol 44 (1) ◽  
Author(s):  
Caroline M. Leaf ◽  
Brenda Louw ◽  
Isabel Uys
Keyword(s):  
Information Processing ◽  
Life Skills ◽  
Traditional Approach ◽  
Traditional Learning ◽  
Information Processing Model ◽  
The People ◽  
Alternative Approach ◽  
Current Article ◽  
Alternative Service ◽  
Learning Institutions

The current article suggests that alternatives to the current traditional learning methods are essentials if learning institutions are to provide people with effective life skills that enable them to be autonomous learners. This suggestion is based on a body of literature on alternative learning which stresses the need for fundamental change and hence, a paradigm shift in perception of learning in order to cope with the world-wide information explosion. The alternative non-traditional approach proposed in geodesic learning which stresses learning how to learn and self-directed inquiry as essential life skills which enable systems as well as the people in the systems to bring about their own transformation in response to changing situations and requirements. The current article discusses an alternative service delivery model, the geodesic information processing model, which falls within the realms of the geodesic philosophy. The implications of this alternative approach for the speech-language therapist are discussed.

scholarly journals CICT: New Eyes on Computational Competence in Computational Science

2018 ◽  
Vol 16 ◽  
pp. 01007
Author(s):  
Rodolfo A. Fiorini
Keyword(s):  
Modeling And Simulation ◽  
Formal Language ◽  
Traditional Approach ◽  
System Modeling ◽  
Computational Modelling ◽  
Computational Science ◽  
Open Logic ◽  
Information Conservation ◽  
Biomedical System ◽  
New Perspective

Science does not exists to enlighten people's minds only. It mainly exists to show the educated way from quanta to qualia. And that way starts from computational competence. In previous papers published elsewhere, we have already shown that traditional Q Arithmetic can be regarded as a highly sophisticated open logic, powerful and flexible bidirectional formal language of languages, according to "Computational Information Conservation Theory" (CICT) new perspective. This new awareness can offer competitive approach to guide more effective and convenient algorithm development and application to arbitrary multiscale (AMS) biomedical system modeling and simulation. An articulated example on function computational modelling is presented and compared to standard, well-known and traditional approach. Results are critically discussed.

scholarly journals Quantum Computers - An Emerging Cybersecurity Threat

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Dajana Jelčić Dubček
Keyword(s):  
Information Processing ◽  
Quantum Coherence ◽  
Quantum Physics ◽  
Quantum Computers ◽  
Practical Implementation ◽  
Quantum Superposition ◽  
Processing And Storage ◽  
And Storage ◽  
Superposition Of States

Quantum computational supremacy may potentially endanger the current cryptographic protection methods. Although quantum computers are still far from a practical implementation in information processing and storage, they should not be overlooked in the context of cybersecurity. Quantum computers operate with qubits - units of information that are governed by the fundamental principles of quantum physics, such as quantum superposition of states and quantum coherence. In order to address the new challenge that quantum computers pose to cybersecurity, the very principles of their operation have to be understood and are overviewed in this contribution.

On The Way to Global Peace

2021 ◽  
Author(s):  
Sujoy Kumar Saha
Keyword(s):  
New World ◽  
Current Situation ◽  
Human Race ◽  
Ultimate Truth ◽  
Present Book ◽  
The World ◽  
Transitory Phase ◽  
Global Peace ◽  
New Perspective

The present book starts with an introductory chapter in which the contents of the previous book have been dealt with in a whole new perspective and the ways and means to move forward towards global peace have been delineated in the concluding chapter of the book. In the process, “Life, Mind, Brain, Cognition, Existentialism, Matter, Memory, Consciousness, Mysticism, Ontology, Psychology, Parapsychology, Ecology and Phenomenology” have been dealt with. This is followed by the discussion of “ Philosophy, Renaissance, Soul, Theosophy, Cosmology, Universe, The Witness and The Ultimate Truth”. It has been revealed that there is a whole new world of Existence on a new uncharted plane; the present day world-drama is not matured enough and not qualified enough with a sense of unselfishness to foster Global Peace. None-the-less, the destiny of the world and the whole human race, nay the entire manifested world is set to reach a spirited esoteric plane of Blissful Existence, this being a matter of eternity. The current situation in this planet is no more than a transitory phase.

scholarly journals Elucidating reaction mechanisms on quantum computers

2017 ◽  
Vol 114 (29) ◽  
pp. 7555-7560 ◽  
Author(s):  
Markus Reiher ◽  
Nathan Wiebe ◽  
Krysta M. Svore ◽  
Dave Wecker ◽  
Matthias Troyer
Keyword(s):  
Reaction Mechanisms ◽  
Quantum Computer ◽  
Quantum Error Correction ◽  
Quantum Computers ◽  
Chemical Systems ◽  
Small Quantum ◽  
Quantum Technology ◽  
Classical Computer ◽  
Quantum Error ◽  
Biological Nitrogen

With rapid recent advances in quantum technology, we are close to the threshold of quantum devices whose computational powers can exceed those of classical supercomputers. Here, we show that a quantum computer can be used to elucidate reaction mechanisms in complex chemical systems, using the open problem of biological nitrogen fixation in nitrogenase as an example. We discuss how quantum computers can augment classical computer simulations used to probe these reaction mechanisms, to significantly increase their accuracy and enable hitherto intractable simulations. Our resource estimates show that, even when taking into account the substantial overhead of quantum error correction, and the need to compile into discrete gate sets, the necessary computations can be performed in reasonable time on small quantum computers. Our results demonstrate that quantum computers will be able to tackle important problems in chemistry without requiring exorbitant resources.

Sign in / Sign up

Export Citation Format

Share Document