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TELEPORTATION.ppt (Size: 1.28 MB / Downloads: 103)
Teleportation involves dematerializing an object at one point, and sending the details of that object’s precise atomic configuration be reconstructed.
A teleportation machine would be like a fax machine except that it would work in three dimensional objects as well as documents
It would destroy the original in the process of scanning
MECHANISM OF QUANTUMTELEPORTATION
Teleportation often involves three thing
Firstly, a machine scans some object to find out everything about
it. For example, this may mean that some device scans a space explorer on board her spaceship to find out what she’s like. This includes finding her height, her mass, the color of her hair, what sort of shoes she is wearing etc..
Next, the machine “disassembles” the space explorer and sends
or “beams” all the things that she’s made up of to some uncharted
planet nearby. These include, for example, all the atoms in her body. The machine also sends a message to the planet containing everything that it found out about her.
Finally, we resemble the space explorer on the nearby planet using all the things she’s made up of and the message
TELEPORTATION OF LIGHT
The sender is known as Alice and receiver is known as Bob
In order to teleport light from Alice to Bob three steps has to be taken place.
1. The object has to be scanned to extract all data
2. This large quantity of information has to be sent by some means
3. finally the object has to be reassembled based on data
Scanning means to record from each particle the quantity that specifies the properties of an object
Quantum entanglement is the property that allows 2 photons to behave as one whatever be the distance between them.
If we measure the state of one particle we can instantly measure the state of other.
To make a copy of that object at a distant location one does not need the original parts and pieces-all that is needed is to send the scanned information so that it can be used for reconstructing the object.
In 1998, physicists at the California Institute of Technology(Caltech), along with two European groups, turned the IBM ideas into reality by successfully teleporting a photon, a particle of energy that carries light.
They able to read the atomic structure of a photon , send this information across 1 meter
(3.28 feet) of coaxial cable and create a replica of the photon.
The original photon no longer existed once the replica was made
The main barrier for teleportation of objects larger than a photon . So there is a chance violating the Heisenberg Principle
In order to teleport a photon without violating the Heisenberg Principle, the Caltech physicists used a phenomenon known as entanglement
In entanglement, at least three photons are needed to achieve quantum teleportation:
1. Photon A: The photon to be teleported
2 . Photon B: The transporting photon
3 . Photon C: The photon that is entangled with photon B
In Australian National University ,when researchers successfully teleported a laser beam
This technology maybe used one day to build a quantum computer
FUTURE POSSIBILITIES OF QUANTUM
The future of teleportation is as varied as the past that led to
Society’s fascination with teleportation gives the drive for
further research strong ensuring teleportation as an integral part of society’s progress
the advancement of teleportation is irrefutable, the route of such research is unknown and offers an unpredictable and exciting future. So we can hope the best.
1. Quantum entanglement – “Quantum Mechanics” by Maxwell.
2. Nature Magazine
3. New Scientist Magazine
4. IBM Research papers
8. qubit.org Dept. of Electronics & Communication Engg.. Govt. Engineering College, Thrissur