An engineering two-mode field NOON state in cavity QED

Saif, Farhan; Rameez-ul-Islam,; Khosa, Ashfaq H.

doi:10.1088/0953-4075/43/1/015501

Cited by 18 publications

(10 citation statements)

References 51 publications

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“…a STIRAP process. This is very different from the previous works in which the N photons are produced through N -time excitation and de-excitation of a single atom [21] or through the excitation and de-excitation of N atoms (one atom produces a photon at a time) [20]. A brief discussion on the feasibility of the present scheme is given at the end of the paper.…”

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confidence: 58%

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A Cavity-QED-Based Scheme for Generating Multi-photon NOON State

Xiao

Zeng

2012

Int J Theor Phys

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We present a scheme for generating a multi-photon NOON state within the context of cavity QED. In the present scheme, an N -atom entangled state between two separated cavities is established based on atomic Bragg scattering firstly, and then the entanglement is transferred from atoms to the fields of the two cavities via stimulated Raman adiabatic passage. With the photons emitting from the cavities along two different directions, the maximally path-entangled optical NOON state is obtained.Keywords Multi-photon NOON state · Atomic Bragg scattering · Stimulated Raman adiabatic passage Entanglement, a nonclassical correlation between two quantum systems, has done many wonders when applied in such fields as information, computation, metrology etc., and thus it urges the blossom of many new research fields, such as quantum key distribution [1-4, 22], quantum cryptography [5], quantum dense coding [6], quantum teleportation [7], and so on. There are many different classes of entangled state such as GHZ-class state, W-class state, etc., which display different properties and have different applications. In terms of performing supersensitive measurements, the two-mode maximally entangled Fock state, the socalled NOON state, with the form of (|N 0 1,2 + e iϕ |0N 1,2 )/ √ 2 is of particular interest due to its application in improving the sensitivity of phase measurement of an interferometer beyond the shot-noise limit [8,9] and exceeding the Rayleigh limit in imaging [10]. It has been proved that by using NOON state the measurement accuracy will have a factor of √ N improvement and saturate the Heisenberg limit, which has been regarded as the fundamental limit set by the quantum mechanics and can not be surpassed. This enhancement also has great positive significance in relation to quantum information processing in consideration

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confidence: 58%

“…Up to now, Fock states, Schrodinger cat states, and entangled states have been generated experimentally in cavity quantum electrodynamics. Moreover, several schemes for the generation of NOON state based on cavity QED technologies have been presented [19][20][21][22].…”

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confidence: 99%

A Cavity-QED-Based Scheme for Generating Multi-photon NOON State

Xiao

Zeng

2012

Int J Theor Phys

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“…In this inspiration, various entangled states have been studied such as NOON states, GHZ states, W states and cluster states etc. [14,15,16]. However, many works paid attention to study entanglement.…”

Section: Introductionmentioning

confidence: 99%

Engineering entanglement and teleportation via solving Lindblad master equation

Anouz,

Allati,

Saif

2020

Preprint

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An experimentally realizable model based on the interaction between an excited two-level atom and a radiation field inside two quantum electrodynamics cavities is proposed. It consists of sending an excited two-level atom through two serial cavities which contain the radiation field. Hence, the Lindblad master equation described the reduced density matrix of the joint-joint field system inside the cavities is exactly solved in Markovian and non-Markovian regimes. However, the rate of entanglement inherent in the total field-field system are evaluated using various witnesses of entanglement such as concurrence, logarithmic negativity and quantum discord. Moreover, the non-classicality by means of negativity volume and Wigner function is discussed. Finally, two schemes of quantum teleportation are suggested.

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“…However, beyond this fruitful technical activity lies massive work, both theoretical and experimental, through the utilization of diverse disciplines including atomsfield interactions, photonics, nuclear magnetic resonance, superconducting quantum interference devices, and optomechanics [10]. The list also includes atomic Bragg diffraction (ABD) which has also been involved in addressing quantum informatics [11][12][13] as well as quantum foundational issues [14].…”

Section: Introductionmentioning

confidence: 99%

Remote state preparation through hyperentangled atomic states

Nawaz

ul-Islam

Ikram

2018

J. Phys. B: At. Mol. Opt. Phys.

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Hyperentangled states have enhanced channel capacity in quantum processing and have yieldedè vident increased communication speed in quantum informatics as a consequence of excessively high information content coded over each quantum entity. In the present article, we intend to demonstrate this fact by utilizing atomic states simultaneously entangled both in internal as well as external degrees of freedom, i.e. the de Broglie motion for remote state preparation (RSP).The results clearly demonstrate that we can efficiently communicate two bit information while manipulating only a single quantum subsystem. The states are prepared and manipulated using atomic Bragg diffraction as well as Ramsey interferometry, both of which are now considered as standard, state of the art tools based on cavity quantum electrodynamics. Since atomic Bragg diffraction is a large interaction time regime and produces spatially well separated, decoherence resistant outputs, the schematics presented here for the RSP offer important perspectives on efficient detection as well as unambiguous information coding and readout. The article summarizes the experimental feasibility of the proposal, culminating with a brief discussion.

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An engineering two-mode field NOON state in cavity QED

Cited by 18 publications

References 51 publications

A Cavity-QED-Based Scheme for Generating Multi-photon NOON State

A Cavity-QED-Based Scheme for Generating Multi-photon NOON State

Engineering entanglement and teleportation via solving Lindblad master equation

Remote state preparation through hyperentangled atomic states

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