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Phase and amplitude control of microwave pulse in a linear array of superconducting artificial atoms

  • Mir Qad Ayaz
  • Sajid Qamar
  • Shahid QamarEmail author
Regular Article
  • 58 Downloads

Abstract

Based on phase controlled electromagnetically induced transparency, we propose a scheme for coherent control and storage of a microwave pulse in a linear array of artificial atoms. In particular, we consider the effects of the amplitude and phase of the fields driving the superconducting artificial atoms attached to a one-dimensional transmission line on the storage of a microwave pulse. We show that controlling the relative-phase of the microwave fields coupling the artificial atoms in a three-level Δ-configuration can yield tunable transparency window, which allows the propagation of a microwave pulse. The amplitude-control of the lower-levels coupling field adds a gain signature to the transparency window. Our results show that the absorption of the probe microwave pulse is suppressed and it gets amplified while propagating through an array of artificial atoms. The group velocity of the probe pulse is considerably reduced as a result atoms in a linear array act as coherent microwave memories.

Graphical abstract

Keywords

Quantum Information 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Physics and Applied MathematicsPakistan Institute of Engineering and Applied SciencesNilore, IslamabadPakistan
  2. 2.Department of Basic Sciences and IslamiatUniversity of Engineering and TechnologyPeshawarPakistan
  3. 3.Quantum Optics Lab, Department of Physics, COMSATS UniversityIslamabadPakistan
  4. 4.Centre for Mathematical Sciences and Department of Physics and Applied Mathematics, Pakistan Institute of Engineering and Applied SciencesNilore, IslamabadPakistan

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