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Showing posts with label Quanglement. Show all posts
Showing posts with label Quanglement. Show all posts

Monday, January 20, 2014

Quantum Tunnelling

Quantum tunnelling or tunneling (see spelling differences) refers to the quantum mechanical phenomenon where a particle tunnels through a barrier that it classically could not surmount. This plays an essential role in several physical phenomena, such as the nuclear fusion that occurs in main sequence stars like the Sun.[1] It has important applications to modern devices such as the tunnel diode,[2] quantum computing, and the scanning tunnelling microscope. The effect was predicted in the early 20th century and its acceptance, as a general physical phenomenon, came mid-century.[3]



ABSTRACT Surprisingly robust quantum effects have been observed in warm biological systems. At the same time quantum information technology has moved closer to physical realization. This one day workshop will examine the significance of mesoscopic quantum coherence, tunneling and entanglement in biomolecular membranes, proteins, DNA and cytoskeleton, with particular attention to recently discovered megahertz ballistic conductance in microtubules. Potential utilization of biomolecular quantum information in regulation of cellular activities will be addressed, along with implications for disease and therapy as well as the future development of quantum computation and artificial intelligence.Google Workshop on Quantum Biology, Welcome and Introduction, Presented by Hartmut Neven

See Also:

Saturday, November 30, 2013

Quantum Computing and Evolution?

The unique capability of quantum mechanics to evolve alternative possibilities in parallel is appealing and over the years a number of quantum algorithms have been developed offering great computational benefits. Systems coupled to the environment lose quantum coherence quickly and realization of schemes based on unitarity might be impossible. Recent discovery of room temperature quantum coherence in light harvesting complexes opens up new possibilities to borrow concepts from biology to use quantum effects for computational purposes. While it has been conjectured that light harvesting complexes such as the Fenna-Matthews-Olson (FMO) complex in the green sulfur bacteria performs an efficient quantum search similar to the quantum Grover's algorithm the analogy has yet to be established. See: Evolutionary Design in Biological Quantum Computing



The Bloch sphere is a representation of a qubit, the fundamental building block of quantum computers.


Quantum Light Harvesting Hints at Entirely New Form of Computing






See:




Wednesday, December 08, 2010

Conformal Cyclic Cosmology....

Penrose's Conformal Cyclic Cosmology, from one of his Pittsburgh lecture slides in June, 2009. Photo by Bryan W. Roberts

Also see: BEFORE THE BIG BANG: AN OUTRAGEOUS NEW PERSPECTIVE AND ITS IMPLICATIONS FOR PARTICLE PHYSICS
....... (CCC) is a cosmological model in the framework of general relativity, advanced by the theoretical physicist Sir Roger Penrose.[1][2] In CCC, the universe undergoes a repeated cycle of death and rebirth, with the future timelike infinity of each previous universe being identified with the Big Bang singularity of the next.[3] Penrose outlines this theory in his book Cycles of Time: An Extraordinary New View of the Universe.

Contents

Basic Construction

Penrose's basic construction[4] is to paste together a countable sequence of open FLRW spacetimes, each representing a big bang followed by an infinite future expansion. Penrose noticed that the past conformal boundary of one copy of FLRW spacetime can be "attached" to the future conformal boundary of another, after an appropriate conformal rescaling. In particular, each individual FLRW metric gab is multiplied by the square of a conformal factor Ω that approaches zero at timelike infinity, effectively "squashing down" the future conformal boundary to a conformally regular hypersurface (which is spacelike if there is a positive cosmological constant, as we currently believe). The result is a new solution to Einstein's equations, which Penrose takes to represent the entire Universe, and which is composed of a sequence of sectors that Penrose calls "aeons."

Physical Implications

The significant feature of this construction for particle physics is that, since baryons are obey the laws of conformally invariant quantum theory, they will behave in the same way in the rescaled aeons as in the original FLRW counterparts. (Classically, this corresponds to the fact that light cone structure is preserved under conformal rescalings.) For such particles, the boundary between aeons is not a boundary at all, but just a spacelike surface that can be passed across like any other. Fermions, on the other hand, remain confined to a given aeon. This provides a convenient solution to the black hole information paradox; according to Penrose, fermions must be irreversibly converted into radiation during black hole evaporation, to preserve the smoothness of the boundary between aeons.

The curvature properties of Penrose's cosmology are also highly desirable. First, the boundary between aeons satisfies the Weyl curvature hypothesis, thus providing a certain kind of low-entropy past as required by statistical mechanics and by observation. Second, Penrose has calculated that a certain amount of gravitational radiation should be preserved across the boundary between aeons. Penrose suggests this extra gravitational radiation may be enough to explain the observed cosmic acceleration without appeal to a dark energy matter field.

Empirical Tests

In 2010, Penrose and V. G. Gurzadyan published a preprint of a paper claiming that observations of the cosmic microwave background made by the Wilkinson Microwave Anisotropy Probe and the BOOMERanG experiment showed concentric anomalies which were consistent with the CCC hypothesis, with a low probability of the null hypothesis that the observations in question were caused by chance.[5] However, the statistical significance of the claimed detection has since been questioned. Three groups have independently attempted to reproduce these results, but found that the detection of the concentric anomalies was not statistically significant.[6][7][8]

See also

References

  1. ^ Palmer, Jason (2010-11-27). "Cosmos may show echoes of events before Big Bang". BBC News. http://www.bbc.co.uk/news/science-environment-11837869. Retrieved 2010-11-27. 
  2. ^ Penrose, Roger (June 2006). "Before the big bang: An outrageous new perspective and its implications for particle physics". Edinburgh, Scotland: Proceedings of EPAC 2006. p. 2759-2767. http://accelconf.web.cern.ch/accelconf/e06/PAPERS/THESPA01.PDF. Retrieved 2010-11-27. 
  3. ^ Cartlidge, Edwin (2010-11-19). "Penrose claims to have glimpsed universe before Big Bang". physicsworld.com. http://physicsworld.com/cws/article/news/44388. Retrieved 2010-11-27. 
  4. ^ Roger Penrose (2006). "Before the Big Bang: An Outrageous New Perspective and its Implications for Particle Physics". Proceedings of the EPAC 2006, Edinburgh, Scotland: 2759-2762. http://accelconf.web.cern.ch/accelconf/e06/PAPERS/THESPA01.PDF. 
  5. ^ Gurzadyan VG; Penrose R (2010-11-16). "Concentric circles in WMAP data may provide evidence of violent pre-Big-Bang activity". arΧiv:1011.3706 [astro-ph.CO]. 
  6. ^ Wehus IK; Eriksen HK (2010-12-07). "A search for concentric circles in the 7-year WMAP temperature sky maps". arΧiv:1012.1268 [astro-ph.CO]. 
  7. ^ Moss A; Scott D; Zibin JP (2010-12-07). "No evidence for anomalously low variance circles on the sky". arΧiv:1012.1305 [astro-ph.CO]. 
  8. ^ Hajian A (2010-12-8). "Are There Echoes From The Pre-Big Bang Universe? A Search for Low Variance Circles in the CMB Sky". arΧiv:1012.1656 [astro-ph.CO].

See Also: Penrose's CCC cosmology is either inflation or gibberish

Monday, August 23, 2010

Quantum Computing

Towards quantum chemistry on a quantum computer

B. P. Lanyon1,2, J. D. Whitfield4, G. G. Gillett1,2, M. E. Goggin1,5, M. P. Almeida1,2, I. Kassal4, J. D. Biamonte4,6, M. Mohseni4,6, B. J. Powell1,3, M. Barbieri1,2,6, A. Aspuru-Guzik4 & A. G. White1,2

Abstract

Exact first-principles calculations of molecular properties are currently intractable because their computational cost grows exponentially with both the number of atoms and basis set size. A solution is to move to a radically different model of computing by building a quantum computer, which is a device that uses quantum systems themselves to store and process data. Here we report the application of the latest photonic quantum computer technology to calculate properties of the smallest molecular system: the hydrogen molecule in a minimal basis. We calculate the complete energy spectrum to 20 bits of precision and discuss how the technique can be expanded to solve large-scale chemical problems that lie beyond the reach of modern supercomputers. These results represent an early practical step toward a powerful tool with a broad range of quantum-chemical applications.

Thursday, May 29, 2008

The Plane of Simultaneity

This blog entry was constructed to reply to the conversation that is going on in the issue of the "Block Universe."


See:

  • Penrose and Quanglement

  • Entanglement and the New Physics




  • In the past, teleportation has only been possible with particles of light Image: Rainer Blatt



    It's useless sometimes to just lay there while these thoughts accumulate in one's mind, as one weaves together the picture that is forming, and whence it come from this unification process, and after a time, one then thinks about the abilities of mind to gather and consolidate.


    By taking advantage of quantum phenomena such as entanglement, teleportation and superposition, a quantum computer could, in principle, outperform a classical computer in certain computational tasks. Entanglement allows particles to have a much closer relationship than is possible in classical physics. For example, two photons can be entangled such that if one is horizontally polarized, the other is always vertically polarized, and vice versa, no matter how far apart they are. In quantum teleportation, complete information about the quantum state of a particle is instantaneously transferred by the sender, who is usually called Alice, to a receiver called Bob. Quantum superposition, meanwhile, allows a particle to be in two or more quantum states at the same time


    So let me begin first by saying that given this process we can connect this world line across the expanse of space, is, more or less the understanding that this is to be the means in which these new forms of communication in science are leading as we expound the future, and what it shall become in our present moments.



    See: Central theme is the Sun You can "click" on picture as well, or, use mouse to hover over image, for additional reading

    So you look at the sun, and what new ways can we can perceive and accumulating the data of what connects this "distance and time," one will be all the smarter when they realize that the results of experimental verifications are at present being given, and as such, what shall these examples serve, but to remind one that new experiences continue to bring new innovations to the forefront.

    Lightcone Projection- see mathematical basis here for the introduction of what will become the basis of determinations, the "decomposable definition" of these new forms of communication.

    The basis for these thoughts are the developing views based on the light cone. It was not my reasons alone in which such an idea was used to support an conjecture about, so, by these very reasons I thought it best to explain what such simultaneity can do as we hold these views about "distance and time" as we follow this world line across the expanse of the universe.

    The grey ellipse is moving relativistic sphere, its oblate shape due to Lorentz contraction. Colored ellipse is visual image of the sphere. Background curves are a xy-coordinates grid which is rigidly linked to the sphere. It is shown only at one moment in time.See here for reference and animations.

    Okay, so we have this event that happens in time. How are we to measure what the sun is suppose to be, if we did not have some information about the depth of perception that is needed in order to create this image for consumption?

    Such comparative views are needed that are current, and, "in experimental stages" to help us discern what it means for "Galactic Communication" which we will employ as we measure the distance of this world line.:)

    Such distances "can be elevated in my view," and such instantaneous recognitions are to be the associative values I place on how we can now see the "bulk perspective" and the graviton's condensation we can now assign to the cosmos?

    As we know from Einstein’s theory of special relativity, nothing can travel faster than c, the velocity of light in a vacuum. The speed of the light that we see generally travels with a slower velocity c/n where n is the refractive index of the medium through which we view the light (in air at sea level, n is approximately 1.00029 whereas in water n is 1.33). Highly energetic, charged particles (which are only constrained to travel slower than c) tend to radiate photons when they pass through a medium and, consequently, can suddenly find themselves in the embarrassing position of actually travelling faster than the light they produce!

    The result of this can be illustrated by considering a moving particle which emits pulses of light that expand like ripples on a pond, as shown in the Figure (right). By the time the particle is at the position indicated by the purple spot, the spherical shell of light emitted when the particle was in the blue position will have expanded to the radius indicated by the open blue circle. Likewise, the light emitted when the particle was in the green position will have expanded to the radius indicated by the open green circle, and so on. Notice that these ripples overlap with each other to form an enhanced cone of light indicated by the dotted lines. This is analogous to the idea that leads to a sonic boom when planes such as Concorde travel faster than the speed of sound in air
    See:What is Cerenkov Radiation?

    It is thusly, that such events in time produce information for us, that help us to look at the universe in new ways, and as such, information can be used to build new devices that penetrate beyond the confines we finds photons experience in their limitations.( please Phil take note of, in bold)

    Thursday, April 28, 2005

    Quantum Entanglement: Do We Need a Radically New Spacetime/Quantum Worldview

    I have been thinking hard and heavy about how such information could have been translated from the horizon of a blackhole.

    IN post previous post this interaction and thinking has been directed in Gerard 't Hooft focus. In light of Penrose picture below we see where this focus can point our attention on principles of entanglement? Might we have said that there can be such a thing as the calorimetric view within context of the larger picture of relativity, as well as, incorporating this quantum view?

    We needed to start from some place and all seem to be happy here as long as we slowly chart this progress, to describing this visual expression of the reality we are moving into. Now we are at the horizon? Particle production and it's inception?

    What are the limitations of these views?



  • Penrose and Quanglement

  • Entanglement and the New Physics




  • In the past, teleportation has only been possible with particles of light Image: Rainer Blatt



    By taking advantage of quantum phenomena such as entanglement, teleportation and superposition, a quantum computer could, in principle, outperform a classical computer in certain computational tasks. Entanglement allows particles to have a much closer relationship than is possible in classical physics. For example, two photons can be entangled such that if one is horizontally polarized, the other is always vertically polarized, and vice versa, no matter how far apart they are. In quantum teleportation, complete information about the quantum state of a particle is instantaneously transferred by the sender, who is usually called Alice, to a receiver called Bob. Quantum superposition, meanwhile, allows a particle to be in two or more quantum states at the same time





    Whether such a "quantum computer" can realistically be built with a value of L that is large enough to be of practical use is a topic of much debate. However, the mere possibility has led to an explosive renaissance of interest in the host of curious




    Issues of Entanglement

    Saturday, January 01, 2005

    Roger Penrose and the Quanglement


    Order and Chaos, by Escher
    (lithograph, 1950)



    I will give Peter Woit and the group time to formulate the topic that should present itself shortly on their blog gathering. How the integration and question presented by Penrose was very helpful in how we digest early universe information. I will speak more on that, and universe clumping then.




    Penroses Influence on Escher

    During the later half of the 1950’s, Maurits Cornelius Escher received a letter from Lionel and Roger Penrose. This letter consisted of a report by the father and son team that focused on impossible figures. By this time, Escher had begun exploring impossible worlds. He had recently produced the lithograph Belvedere based on the “rib-cube,” an impossible cuboid named by Escher (Teuber 161). However, the letter by the Penroses, which would later appear in the British Journal of Psychology, enlightened Escher to two new impossible objects; the Penrose triangle and the Penrose stairs. With these figures, Escher went on to create further impossible worlds that break the laws of three-dimensional space, mystify one’s mind, and give a window to the artist heart.


    If one does not comprehend the way in which the images can set up the mind for other things, then it becomes extremely difficult for it to accept any other models for consideration in the mathematical realm leading to issues of quantum gravity?