Generation of Multicavity Entangled States with a Single Three-Level Atom

A simple scheme is proposed for the generation of maximally entangled states for several separated cavities, in which each cavity is in a one-photon state or in the vacuum state. In the scheme a laddertype three-level atom is sent through the cavities and additional classical fields. The whole system finally evolves into a state, which is given by the product of the highly entangled field state with an atomic state.

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Introduction, generation and entanglement of entangled displaced even and odd squeezed states

International Journal of Quantum Information ◽

10.1142/s0219749920500471 ◽

2021 ◽

pp. 2050047

Author(s):

Amir Karimi

Keyword(s):

Quantum States ◽

Entangled States ◽

Squeezed States ◽

Displacement Operator ◽

Text Type ◽

Level Atom ◽

Displacement Parameter ◽

Entangled Quantum States ◽

Quantized Field ◽

Classical Fields

In this paper, first, we introduce special types of entangled quantum states named “entangled displaced even and odd squeezed states” by using displaced even and odd squeezed states which are constructed via the action of displacement operator on the even and odd squeezed states, respectively. Next, we present a theoretical scheme to generate the introduced entangled states. This scheme is based on the interaction between a [Formula: see text]-type three-level atom and a two-mode quantized field in the presence of two strong classical fields. In the continuation, we consider the entanglement feature of the introduced entangled states by evaluating concurrence. Moreover, we study the influence of the displacement parameter on the entanglement degree of the introduced entangled states and compare the results. It will be observed that the concurrence of the “entangled displaced odd squeezed states” has less decrement with respect to the “entangled displaced even squeezed states” by increasing the displacement parameter.

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EFFICIENT SCHEME FOR TELEPORTATION OF UNKNOWN ATOMIC STATES USING NON-MAXIMALLY ENTANGLED STATES

Modern Physics Letters B ◽

10.1142/s0217984907013341 ◽

2007 ◽

Vol 21 (15) ◽

pp. 923-927

Author(s):

KUANG-WEI XIONG

Keyword(s):

Cavity Qed ◽

Bell State ◽

Atomic State ◽

Entangled States ◽

Distinct Advantage ◽

State Measurement ◽

Cavity Decay ◽

Efficient Scheme ◽

Maximally Entangled States ◽

Atomic States

We propose a feasible scheme for teleporting an unknown atomic state by using non-maximally entangled states in cavity QED. The distinct advantage of the scheme is that, not only can the teleportation and distillation procedure be realized simultaneously, but the scheme is also insensitive to the cavity decay and thermal field with the assistance of a strong classical driving field. In addition, the joint Bell-state measurement can be distinguished via detecting the atomic state.

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DYNAMICS OF A COUPLED CAVITY SYSTEM COMPOSED OF THREE CAVITIES

International Journal of Quantum Information ◽

10.1142/s0219749912500700 ◽

2012 ◽

Vol 10 (06) ◽

pp. 1250070 ◽

Cited By ~ 5

Author(s):

ZHI-RONG ZHONG ◽

XIU LIN ◽

BIN ZHANG ◽

ZHEN-BIAO YANG

Keyword(s):

Theoretical Basis ◽

Quantum States ◽

Entangled States ◽

W States ◽

Atomic Excitation ◽

Level Atom ◽

Cavity System ◽

Maximally Entangled States ◽

The One ◽

Coupled Cavity

We study the one-excitation dynamics of a coupled cavity system composed of three cavities, each containing a two-level atom. By adjusting the atom–cavity detuning Δ, cavity–cavity hopping rate v and the initial atomic excitation residential, a wide variety of time-evolution behaviors can be realized. Under certain conditions, the two-atom maximally entangled states and three-atom W states can be obtained. The results provide a theoretical basis for the manipulation of quantum states in such a system and will contribute to the understanding of more complex systems.

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