scholarly journals DNA as classical and quantum information system: Implication to gene expression in normal and cancer cells

2005 ◽  
Vol 13 (3-4) ◽  
pp. 115-120 ◽  
Author(s):  
Ðuro Koruga
Keyword(s):  
Information System ◽  
Quantum Information ◽  
Mapping Function ◽  
Basic Element ◽  
Human Organism ◽  
Quantum Model ◽  
Quantum Properties ◽  
Molecular Machinery ◽  
Classical Quantum ◽  
New Vision

Usually, we think about DNA as a molecular machinery system responsible to make proteins. Protein looks like a second side of DNA code because mapping function is based on a classical information system (chemical/physical) by code 43=64. However, in organisms like paramecium DNA works 95% as molecular machinery for proteins synthesis, while in humans it is only about 10%. Is 90% of human genetic structure "junk"? What does other 90% DNA work in human organism? What type of information system, different than classical, does DNA possess? To give answer to this question we are rethinking well-known facts of biomolecules from both classical and quantum information point of view. Basic element in our consideration is hydrogen bond, which possess both classical and quantum properties. Based on new vision of old data we develop synergetic (classical/quantum) model of DNA information processing, which may help for better understanding the functions of "junk" sequence in genetic code. We believe that "junk" sequences may be active regulatory factor of system complexity trough microtubules (centrioles) and water in living systems. Synergetic approach (classical/quantum) of information channels may open a new vision and understanding of the genomic programming and molecular interconnection on distance based on matching classical and quantum properties of hydrogen bonds and entanglement. .

scholarly journals From the GKLS Equation to the Theory of Solar and Fuel Cells

2017 ◽  
Vol 24 (03) ◽  
pp. 1740007 ◽  
Author(s):  
R. Alicki
Keyword(s):  
Fuel Cells ◽  
Quantum Information ◽  
Open Systems ◽  
Operational Definition ◽  
Quantum Model ◽  
Quantum Thermodynamics ◽  
Quantum Open Systems ◽  
Sound Theory ◽  
Wide Range ◽  
Definition Of

The mathematically sound theory of quantum open systems, formulated in the ’70s and highlighted by the discovery of Gorini-Kossakowski-Lindblad-Sudarshan (GKLS) equation, found a wide range of applications in various branches of physics and chemistry, notably in the field of quantum information and quantum thermodynamics. However, it took 40 years before this formalism has been applied to explain correctly the operation principles of long existing energy transducers like photovoltaic, thermoelectric and fuel cells. This long path is briefly reviewed from the author’s perspective. Finally, the new, fully quantum model of chemical engine based on GKLS equation and applicable to fuel cells or replicators is outlined. The model illustrates the difficulty with an entirely quantum operational definition of work, comparable to the problem of quantum measurement.

scholarly journals Determining quantum phase diagrams of topological Kitaev-inspired models on NISQ quantum hardware

Quantum ◽  
2021 ◽  
Vol 5 ◽  
pp. 553
Author(s):  
Xiao Xiao ◽  
J. K. Freericks ◽  
A. F. Kemper
Keyword(s):  
Phase Diagrams ◽  
Fault Tolerant ◽  
Quantum Algorithms ◽  
Entanglement Entropy ◽  
Quantum Phase ◽  
Quantum Circuits ◽  
Quantum Computers ◽  
Quantum Model ◽  
Quantum Properties ◽  
Topological Quantum

Topological protection is employed in fault-tolerant error correction and in developing quantum algorithms with topological qubits. But, topological protection intrinsic to models being simulated, also robustly protects calculations, even on NISQ hardware. We leverage it by simulating Kitaev-inspired models on IBM quantum computers and accurately determining their phase diagrams. This requires constructing conventional quantum circuits for Majorana braiding to prepare the ground states of Kitaev-inspired models. The entanglement entropy is then measured to calculate the quantum phase boundaries. We show how maintaining particle-hole symmetry when sampling through the Brillouin zone is critical to obtaining high accuracy. This work illustrates how topological protection intrinsic to a quantum model can be employed to perform robust calculations on NISQ hardware, when one measures the appropriate protected quantum properties. It opens the door for further simulation of topological quantum models on quantum hardware available today.

The Questions of Medical Informatics

1996 ◽  
Vol 35 (01) ◽  
pp. 8-11
Author(s):  
I. Dimitrov
Keyword(s):  
Information System ◽  
Medical Informatics ◽  
Information Technologies ◽  
Point Of View ◽  
Human Organism ◽  
Mathematical Apparatus ◽  
Medical Problems ◽  
Medical Computing ◽  
Object Of Study

AbstractEach science is identified with the questions it raises with respect to its object of study. This paper discusses the formulation of the basic questions of medical informatics. From a historical point of view, it first dealt with the problems of medical computing. Thereby, three classical questions arose: How can existing computers and information technologies assist in medical activities? Which components of the mathematical apparatus of informatics can be used for solving medical problems, and how and what activities of a physician are subject to algoritmization? The present time raises a new circle of questions centered around the basic one: How is the information system of the human organism structured and how does it function? This question and others form the basis of a new trend in medical informatics.

The common vein: Demonstration of a quantum information system

1998 ◽  
Vol 5 (10) ◽  
pp. 728
Author(s):  
Ashley Davidoff ◽  
Barbara Banner ◽  
Roderick Williams ◽  
Brian D. Davison
Keyword(s):  
Information System ◽  
Quantum Information ◽  
The Common

ON THE SECURITY OF DECOHERENCE-FREE SUBSPACES AND SUBSYSTEMS FOR CLASSICAL INFORMATION CONVEYING THROUGH QUANTUM CHANNELS

2013 ◽  
Vol 11 (02) ◽  
pp. 1350022
Author(s):  
ELLOÁ B. GUEDES ◽  
FRANCISCO M. DE ASSIS
Keyword(s):  
Quantum Information ◽  
Communication Systems ◽  
Quantum Communication ◽  
Quantum Information Processing ◽  
Information Leakage ◽  
Practical Implementation ◽  
Quantum Channels ◽  
Quantum Properties ◽  
Message Exchange ◽  
Decoherence Free Subspaces

Decoherence is one of the main obstacles in quantum information processing. In cryptographic scenarios, in particular, decoherence is not only responsible for the loss of the quantum properties but also for information leakage out to a wiretapper. Given that decoherence must be fought in real-world quantum communication systems, we present a scheme, using decoherence-free subspaces and subsystems, to perform secure classical communications through noisy quantum channels. Using quantum information and wiretap theories, we establish a proof of unconditional security of our scheme. We illustrate our proposal with a non-trivial example and discuss some of its impacts on already existing quantum secure message exchange protocols. Furthermore, we present some up-to-date technologies that can be used for practical implementation of the scheme proposed.

Classical and Quantum Information Channels in Protein Chain

2006 ◽  
Vol 518 ◽  
pp. 491-496 ◽  
Author(s):  
Dj. Koruga ◽  
A. Tomić ◽  
Z. Ratkaj ◽  
L. Matija
Keyword(s):  
Force Constants ◽  
Protein Chain ◽  
Planck Constant ◽  
Quantum Properties ◽  
Quantum Coding ◽  
Quantum Approach ◽  
Classical Quantum ◽  
System 1 ◽  
Energy Information ◽  
Peptide Plane

Investigation of the properties of peptide plane in protein chain from both classical and quantum approach is presented. We calculated interatomic force constants for peptide plane and hydrogen bonds between peptide planes in protein chain. On the basis of force constants, displacements of each atom in peptide plane, and time of action we found that the value of the peptide plane action is close to the Planck constant. This indicates that peptide plane from the energy viewpoint possesses synergetic classical/quantum properties. Consideration of peptide planes in protein chain from information viewpoint also shows that protein chain possesses classical and quantum properties. So, it appears that protein chain behaves as a triple dual system: (1) structural - amino acids and peptide planes, (2) energy - classical and quantum state, and (3) information - classical and quantum coding. Based on experimental facts of protein chain, we proposed from the structure-energy-information viewpoint its synergetic code system.

scholarly journals Hybrid Classical-Quantum Fitting Attention States to Statistical Mechanics of Neocortical Interactions

2021 ◽  
Author(s):  
Lester Ingber
Keyword(s):  
Statistical Mechanics ◽  
Multiple Scales ◽  
Wave Packets ◽  
Quantum Systems ◽  
Quantum Model ◽  
Quantum Processes ◽  
Multivariate Statistical ◽  
Synaptic Interactions ◽  
Classical Quantum ◽  
Random Shocks

Hybrid Classical-Quantum computing has already arrived at several commercial quantum computers, offered to researchers and businesses. Here, application is made to a classical-quantum model of human neocortex, Statistical Mechanics of Neocortical Interactions (SMNI), which has had its applications published in many papers since 1981. However, this project only uses Classical (super-)computers. Since 2015, a path-integral algorithm, PATHINT, used previously to accurately describe several systems in several disciplines, has been generalized from 1 dimension to N dimensions, and from classical to quantum systems, qPATHINT. Published papers have described the use of qPATHINT to neocortical interactions and financial options. The classical space described by SMNI applies nonlinear nonequilibrium multivariate statistical mechanics to synaptic neuronal interactions, while the quantum space described by qPATHINT applies synaptic contributions from Ca2+ waves generated by astrocytes at tripartite neuron-astrocyte-neuron sites. Previous SMNI publications since 2013 have calculated the astrocyte Ca2+ wave synaptic interactions from a closed-form (analytic) expression derived by the Principal Investigator (PI). However, more realistic random shocks to the Ca2+ waves from ions entering and leaving these wave packets should be included using qPATHINT between electroencephalographic (EEG) measurements which decohere the quantum wave packets. This current project extends calculations to multiple scales of interaction between classical events and expectations over the Ca2+ quantum processes to include these random shocks in previous codes used to fit EEG data to the SMNI model, that included the analytic forms for the quantum processes but now replaced by qPATHINT. The PI's Adaptive Simulated Annealing (ASA) importance-sampling optimization code is used for fitting the combined classical-quantum system. Gaussian Quadratures is used for numerical calculation of momenta expectations of the astrocyte processes that contribute to SMNI synaptic interactions. This project thereby demonstrates how some hybrid classical-quantum systems may be calculated quite well using only classical (super-)computers.

scholarly journals Anisotropic Heisenberg model for the mixed spin-3/2 and spin-1/2 under random crystal field

2021 ◽  
Vol 24 (1) ◽  
pp. 13704
Author(s):  
D. Sabi Takou ◽  
M. Karimou ◽  
F. Hontinfinde ◽  
E. Albayrak
Keyword(s):  
Crystal Field ◽  
Heisenberg Model ◽  
Classical Case ◽  
Absolute Temperature ◽  
Quantum Model ◽  
Mixed Spin ◽  
Wide Range ◽  
Classical Quantum ◽  
Oguchi Approximation ◽  
Qualitative Changes

Thermodynamic properties of the mixed spin-3/2 and spin-1/2 Heisenberg model are examined within the Oguchi approximation in the presence of a random crystal-field (RCF). The RCF is either introduced with probability p or turned off with probability 1-p randomly. The thermal variations of the global magnetization and free energy of the system are investigated to construct the phase diagrams for the classical, quantum and anisotropic cases. Different results revealed that no qualitative changes exist between them. Quantum effects are found to be present and abundant in the quantum model in the negative D -range. This phenomenon has a strong decreasing effect on the critical temperature which becomes much lower than in the classical case. In the presence of an external field, it was observed that coercivity and remanence decrease in a wide range of the absolute temperature.

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