Cavity quantum electrodynamics for photon mediated transfer of quantum states

Md Mijanur Rahman, Pankaj Kumar Choudhury

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

An enhanced approach for transferring quantum state between quantum nodes is proposed wherein photons serve as the information carrier. Each node consists of a Rubidium (87Rb) atom trapped inside a two-mode optical cavity. The approach is based on cavity quantum electrodynamics (QED) wherein a system of lasers is applied on the atom in order to generate photon through Raman transition. Logic states 0' and 1' are represented by two subspaces of the hyperfine energy levels with magnetic sub-levels of 87Rb atom. A static magnetic field is applied upon the atoms so that the hyperfine states of 87Rb atom are split into the magnetic sub-levels (due to Zeeman effect). Depending on the logic state of the transmit node, a right- or left-circularly polarized photon with designated frequency is produced through a cavity assisted Raman process. When the photon is received at the receive node via an optical fiber, the logic state of the transmit node is restored (through a cavity QED process) into the receive node. A desirable feature of the approach is that, during the transmission of logic state, the transmit node itself should not significantly change its quantum state; this is successfully validated through simulations.

Original languageEnglish
Article number113110
JournalJournal of Applied Physics
Volume109
Issue number11
DOIs
Publication statusPublished - 1 Jun 2011

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quantum electrodynamics
logic
cavities
photons
atoms
Zeeman effect
rubidium
optical fibers
energy levels
magnetic fields
lasers
simulation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Cavity quantum electrodynamics for photon mediated transfer of quantum states. / Rahman, Md Mijanur; Choudhury, Pankaj Kumar.

In: Journal of Applied Physics, Vol. 109, No. 11, 113110, 01.06.2011.

Research output: Contribution to journalArticle

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