scholarly journals Quantum Teleportation

2021 ◽  
pp. 73-79
Author(s):  
Ciaran Hughes ◽  
Joshua Isaacson ◽  
Anastasia Perry ◽  
Ranbel F. Sun ◽  
Jessica Turner
Keyword(s):  
Science Fiction ◽  
Quantum Entanglement ◽  
Quantum State ◽  
Quantum Teleportation ◽  
The Other ◽  
Interesting Application

AbstractOne interesting application of entanglement is quantum teleportation, which is a technique for transferring an unknown quantum state from one place to another. In science fiction, teleportation generally involves a machine scanning a person and another machine reassembling the person on the other end. The original body disintegrates and no longer exists. Similarly, quantum teleportation works by “scanning” the original qubit, sending a recipe, and reconstructing the qubit elsewhere. The original qubit is not physically destroyed in the science fiction sense, but it is no longer in the same state. Otherwise, the previously mentioned no-cloning theorem—which states that a qubit cannot be exactly copied onto another qubit—would be violated.1 As we will see, the “scanning” part poses a problem which can only be solved by leveraging quantum entanglement.

Recreation Algorithm: Teleportation

2020 ◽  
Author(s):  
Deep Bhattacharjee
Keyword(s):  
Science Fiction ◽  
Reference Frame ◽  
Quantum Teleportation ◽  
Large Scale ◽  
Great Difficulty ◽  
The Other ◽  
Polar Coordinates ◽  
Minkowski Metric ◽  
And Mathematics ◽  
Cylindrical Polar Coordinates

‘Teleportation’ means to teleport an object from one place to other with the help of ‘portals’. This is a ‘2 way’ process involving the dissembling from one point to reassembling to the other point separated by a large distance in space and time. The ‘reassemble’ of one person in the other end is based on an algorithm which is solely a polynomial wavefunctions in correspondence with the ‘Minkowski metric’ and based on this ‘algorithm’ the produced image of the persons or the ‘exact copy’ of the persons being teleported is either very accurate or closed to accurate and all of this is the outcome of transforming the matter to energy by means of the Einstein’s famous mass-energy equivalence called E=mc2 as without the conversion of energy, an object ‘being in a state of matter can’t be teleported. There are certain parameters for the ‘teleportation to happen properly’ and these parameters are as follows… 1. The object needs to be ‘teleported’ through ‘hyperspace’ thereby enabling the need for ‘higher dimensional forces due to gravity’. 2. The cross section of the energy packets that will be teleported will be changed due to Fitz-Gerald Lorentz Contractions while moving through ‘hyperspace’. 3. The ‘time will be dilated infinitely’ for the own reference frame of the ‘packets of the objects’ being teleported as the speed of energy is very close to the speed of light. 4. There will be a pathway through hyperspace called as ‘link line’ which is the main highway of the ‘objects energy packets’ to move during teleportation from one portal to another. 5. The energy packets must be equal to 1 at the other end of the ‘link line’ or ‘portal’. That is no fragmentation can be done. All these parameters are very important to analyze in case of ‘teleportation’ and if the parameters are consistent with the theory and mathematics, then the teleportation would happen at the blink of an eye just as the ‘science fiction movies’ and its always instantaneous for small distance (by small, I mean within the range of at least some light seconds) and its always constant time or time has been dilated infinitely due to the ‘speed of the energy packet’ close to that of light’ from the own reference frame of the ‘teleported object’, however, some amount of time will pass for the observers at the other distant ends and that amount of passing time is proportional to the length of the ‘link line’ through hyperspace. The nature of ‘teleportation that I’m going to be discussing here is ‘classical teleportation’ and not ‘quantum teleportation’. Quantum teleportation although has been achieved in ‘laboratory’ however, they are restricted on a very tiny scale of a pair of electrons (up and down spin) or photons (vertical and horizontal polarizations). However, there is great difficulty in achieving this nature of ‘quantum teleportation’ in a very large scale objects. As because a tiny dot (.) contains more than 10^8 atoms and each atom have a number of electrons in different orbital’s depending on the nature of the element comprising the atoms. So, the number of individual electrons are exponentially large in a large scale cluster of a million atoms when taken to be a large objects. Moreover, in quantum teleportation, there is a need for a ‘classical channels’ to establish the contact as the particles are in ‘Bell’s state or entangled pairs’. So, what I would discuss here is a ‘classical’ approach of teleportation and we will proceed both theoretically and mathematically with the process. A complete metric would be derived in this paper to concatenate the proper channel of teleportation through the help of discrete mapping of both locations and coordinates and then the notion of cylindrical polar coordinates are being used in the metric.

An Enhanced Cloud Security using Quantum Teleportation

2015 ◽  
Vol 3 (1) ◽  
Author(s):  
D. Sowmya ◽  
S. Sivasankaran
Keyword(s):  
Quantum Key Distribution ◽  
Quantum Teleportation ◽  
Quantum Physics ◽  
Communication Channel ◽  
Data Transfer ◽  
Cloud Security ◽  
The Other ◽  
Cloud Environment ◽  
Quantum Bits ◽  
Quantum Parallelism

In the cloud environment, it is difficult to provide security to the monolithic collection of data as it is easily accessed by breaking the algorithms which are based on mathematical computations and on the other hand, it takes much time for uploading and downloading the data. This paper proposes the concept of implementing quantum teleportation i.e., telecommunication + transportation in the cloud environment for the enhancement of cloud security and also to improve speed of data transfer through the quantum repeaters. This technological idea is extracted from the law of quantum physics where the particles say photons can be entangled and encoded to be teleported over large distances. As the transfer of photons called qubits allowed to travel through the optical fiber, it must be polarized and encoded with QKD (Quantum Key Distribution) for the security purpose. Then, for the enhancement of the data transfer speed, qubits are used in which the state of quantum bits can be encoded as 0 and 1 concurrently using the Shors algorithm. Then, the Quantum parallelism will help qubits to travel as fast as possible to reach the destination at a single communication channel which cannot be eavesdropped at any point because, it prevents from creating copies of transmitted quantum key due to the implementation of no-cloning theorem so that the communication parties can only receive the intended data other than the intruders.

scholarly journals Jordan products of quantum channels and their compatibility

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Mark Girard ◽  
Martin Plávala ◽  
Jamie Sikora
Keyword(s):  
Quantum State ◽  
Sufficient Conditions ◽  
The Other ◽  
Independent Interest ◽  
Quantum Channels ◽  
Semidefinite Programs ◽  
Jordan Product ◽  
Marginal Problem ◽  
Jordan Products ◽  
Product Of Matrices

AbstractGiven two quantum channels, we examine the task of determining whether they are compatible—meaning that one can perform both channels simultaneously but, in the future, choose exactly one channel whose output is desired (while forfeiting the output of the other channel). Here, we present several results concerning this task. First, we show it is equivalent to the quantum state marginal problem, i.e., every quantum state marginal problem can be recast as the compatibility of two channels, and vice versa. Second, we show that compatible measure-and-prepare channels (i.e., entanglement-breaking channels) do not necessarily have a measure-and-prepare compatibilizing channel. Third, we extend the notion of the Jordan product of matrices to quantum channels and present sufficient conditions for channel compatibility. These Jordan products and their generalizations might be of independent interest. Last, we formulate the different notions of compatibility as semidefinite programs and numerically test when families of partially dephasing-depolarizing channels are compatible.

scholarly journals How to Erase Quantum Monogamy?

2021 ◽  
Vol 3 (1) ◽  
pp. 53-67
Author(s):  
Ghenadie Mardari
Keyword(s):  
Quantum System ◽  
Quantum Entanglement ◽  
The Other ◽  
Arrow Of Time ◽  
Quantum Level ◽  
Delayed Choice ◽  
Other Hand ◽  
The One ◽  
Quantum Erasure ◽  
Non Locality

The phenomenon of quantum erasure exposed a remarkable ambiguity in the interpretation of quantum entanglement. On the one hand, the data is compatible with the possibility of arrow-of-time violations. On the other hand, it is also possible that temporal non-locality is an artifact of post-selection. Twenty years later, this problem can be solved with a quantum monogamy experiment, in which four entangled quanta are measured in a delayed-choice arrangement. If Bell violations can be recovered from a “monogamous” quantum system, then the arrow of time is obeyed at the quantum level.

scholarly journals Rat Cities and Beehive Worlds: Density and Design in the Modern City

2011 ◽  
Vol 53 (4) ◽  
pp. 722-756
Author(s):  
Jon Adams ◽  
Edmund Ramsden
Keyword(s):  
Science Fiction ◽  
Social Structure ◽  
Short Story ◽  
Social System ◽  
Human Life ◽  
The Other ◽  
Efficient Operation ◽  
The People ◽  
The World ◽  
The City

Nestled among E. M. Forster's careful studies of Edwardian social mores is a short story called “The Machine Stops.” Set many years in the future, it is a work of science fiction that imagines all humanity housed in giant high-density cities buried deep below a lifeless surface. With each citizen cocooned in an identical private chamber, all interaction is mediated through the workings of “the Machine,” a totalizing social system that controls every aspect of human life. Cultural variety has ceded to rigorous organization: everywhere is the same, everyone lives the same life. So hopelessly reliant is humanity upon the efficient operation of the Machine, that when the system begins to fail there is little the people can do, and so tightly ordered is the system that the failure spreads. At the story's conclusion, the collapse is total, and Forster's closing image offers a condemnation of the world they had built, and a hopeful glimpse of the world that might, in their absence, return: “The whole city was broken like a honeycomb. […] For a moment they saw the nations of the dead, and, before they joined them, scraps of the untainted sky” (2001: 123). In physically breaking apart the city, there is an extent to which Forster is literalizing the device of the broken society, but it is also the case that the infrastructure of the Machine is so inseparable from its social structure that the failure of one causes the failure of the other. The city has—in the vocabulary of present-day engineers—“failed badly.”

scholarly journals Demons of the mind: The ‘psy’ sciences and film in the long 1960s

2021 ◽  
pp. 095269512110285
Author(s):  
Tim Snelson ◽  
William R. Macauley
Keyword(s):  
Child Development ◽  
Science Fiction ◽  
The Other ◽  
Research Centre ◽  
Film Culture ◽  
Radical Feminist ◽  
Critical Engagement ◽  
The Sixties ◽  
Post War ◽  
The Mind

This introduction provides context for a collection of articles that came out of a research symposium held at the Science Museum's Dana Research Centre in 2018 for the ‘ Demons of Mind: the Interactions of the ‘Psy’ Sciences and Cinema in the Sixties' project. Across a range of events and research outputs, Demons of the Mind sought to map the multifarious interventions and influences of the ‘psy’ sciences (psychology, psychiatry, and psychoanalysis) on film culture in the long 1960s. The articles that follow discuss, in order: critical engagement with theories of child development in 1960s British science fiction; the ‘horrors’ of contemporary psychiatry and neuroscience portrayed in the Hollywood blockbuster The Exorcist (1973); British social realist filmmakers' alliances with proponents of ‘anti-psychiatry’; experimental filmmaker Jane Arden's coalescence of radical psychiatry and radical feminist techniques in her ‘psychodrama’ The Other Side of the Underneath (1973); and the deployment of film technologies by ‘psy’ professionals during the post-war period to capture and interpret mother-infant interaction.

scholarly journals Practical quantum teleportation of an unknown quantum state

2017 ◽  
Vol 95 (5) ◽  
pp. 498-503
Author(s):  
Syed Tahir Amin ◽  
Aeysha Khalique
Keyword(s):  
Quantum State ◽  
Quantum Teleportation ◽  
Bell State ◽  
Linear Optics ◽  
State Measurement ◽  
Dark Counts ◽  
Experimental Parameters ◽  
Unknown Quantum State ◽  
Down Conversion ◽  
Good Agreement

We present our model to teleport an unknown quantum state using entanglement between two distant parties. Our model takes into account experimental limitations due to contribution of multi-photon pair production of parametric down conversion source, inefficiency, dark counts of detectors, and channel losses. We use a linear optics setup for quantum teleportation of an unknown quantum state by the sender performing a Bell state measurement. Our theory successfully provides a model for experimentalists to optimize the fidelity by adjusting the experimental parameters. We apply our model to a recent experiment on quantum teleportation and the results obtained by our model are in good agreement with the experimental results.

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