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Quantum Teleportation: Difference between revisions
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* Using the classical channel, the two bits are sent from Sender to Receiver. | * Using the classical channel, the two bits are sent from Sender to Receiver. | ||
* As a result of the measurement performed at Sender's location, the EPR pair qubit at Receiver's location is in one of four possible states. Of these four possible states, one is identical to the original quantum state, and the other three are closely related. Which of these four possibilities actually obtained, is encoded in the two classical bits. Knowing this, the EPR pair qubit at Receiver's location is modified by local unitary operations that the Receiver performs on his state. And the result will be the original qubit. | * As a result of the measurement performed at Sender's location, the EPR pair qubit at Receiver's location is in one of four possible states. Of these four possible states, one is identical to the original quantum state, and the other three are closely related. Which of these four possibilities actually obtained, is encoded in the two classical bits. Knowing this, the EPR pair qubit at Receiver's location is modified by local unitary operations that the Receiver performs on his state. And the result will be the original qubit. | ||
== | ==Notation== | ||
* <math>|\psi\rangle_O:</math> The unknown original state to be teleported from Sender to Receiver | * <math>|\psi\rangle_O:</math> The unknown original state to be teleported from Sender to Receiver | ||
* <math>|\Phi^+\rangle_{AB}:</math> The EPR pair (or Bell state) shared between two parties | * <math>|\Phi^+\rangle_{AB}:</math> The EPR pair (or Bell state) shared between two parties | ||
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* <math>I:</math> The identity operator | * <math>I:</math> The identity operator | ||
*<math>X,Y,Z:</math> The [[Pauli Operators]] | *<math>X,Y,Z:</math> The [[Pauli Operators]] | ||
==Properties== | ==Properties== | ||
* This protocol uses a public classical channel to transfer two bits of classical information. | * This protocol uses a public classical channel to transfer two bits of classical information. | ||