Notation for general quantum teleportation

نویسندگان

  • Chong Li
  • He-Shan Song
چکیده

A new notation for the quantum teleportation of finite dimensional quantum state through a generally entangled quantum channel is introduced. For a given quantum channel an explict mathematical criterion that governs the faithful teleportation is presented. 1 [email protected] Quantum teleportation has been introduced by Benett et al. [1] and discussed by a number of authors for two dimensional quantum state[2][3][4][5]. By means of a classical and distributed quantum communication channel, an unknown quantum state is destroyed at the sending place while its perfect replica state, after some rotation, appears at remote receiving place. Recently, for teleportation of a general finite dimensional quantum state has been discussed in [6] and [7], and the condition of the unitary transformation was given in the[7]. In this letter, we introduced a new notation for quantum teleportation through a generally entangled quantum channel and constructed an explicit nitary transformation U which receiver Bob performed on his qubit. It is adapt to teleport a n-dimensional quantum state by an (n+ 1)-dimension generally entangled channel. At last, we given all the unitary transformation U for the case that both channel and measurement are in the Bell state (maximally entangled state). Let H 1 be the Hilbert space with dimensions N , and {|i〉1 |i = 1...N } be the set of orthogonal basis in H 1. Alice has a general state |φ〉1 unknown to her in the Hilbert space H 1 as, |φ〉 1 = N ∑

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Alternative new notation for quantum information theory

A new notation has been introduced for the quantum information theory. By this notation,some calculations became simple in quantum information theory such as quantum swapping, quantum teleportation.

متن کامل

Optimizing Teleportation Cost in Multi-Partition Distributed Quantum Circuits

There are many obstacles in quantum circuits implementation with large scales, so distributed quantum systems are appropriate solution for these quantum circuits. Therefore, reducing the number of quantum teleportation leads to improve the cost of implementing a quantum circuit. The minimum number of teleportations can be considered as a measure of the efficiency of distributed quantum systems....

متن کامل

Teleportation via an Entangled Coherent Channel and Decoherence Effect on This Channel

We study an entangled two-mode coherent state within the framework of2×2-dimensional Hilbert space. We investigate the problem of quantum teleportation ofa superposition coherent state via an entangled coherent channel. By three differentmeasures with the titles ``minimum assured fidelity (MASF)”, ``average teleportationfidelity” and ``optimal fidelity (f)” we study the ...

متن کامل

Superdense Coding with GHZ and Quantum Key Distribution with W in the ZX-calculus

Quantum entanglement is a key resource in many quantum protocols, such as quantum teleportation and quantum cryptography. Yet entanglement makes protocols presented in Dirac notation difficult to verify. This is why Coecke and Duncan have introduced a diagrammatic language for quantum protocols, called the ZX-calculus [11]. This diagrammatic notation is both intuitive and formally rigorous. It ...

متن کامل

Optimal quantum teleportation with an arbitrary pure state

We derive the maximum fidelity attainable for teleportation using a shared pair of d-level systems in an arbitrary pure state. This derivation provides a complete set of necessary and sufficient conditions for optimal teleportation protocols. We also discuss the information on the teleported particle which is revealed in course of the protocol using a non-maximally entangled state. PACS numbers...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2001