Design of integrated photonic controlled-phase gate with programmable phase for quantum applications

Basay Y., KOCAMAN S.

Quantum Computing, Communication, and Simulation II 2022, Virtual, Online, 20 - 24 February 2022, vol.12015, (Full Text) identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 12015
  • Doi Number: 10.1117/12.2609657
  • City: Virtual, Online
  • Keywords: Linear optical quantum information processing, CPHASE gate, polarization rotator, integrated optics, EFFICIENT, QUBITS
  • Middle East Technical University Affiliated: Yes

Abstract

© 2022 SPIE.Photons are preferable carriers of quantum information having little interaction with environment. Most crucial elements of photonic quantum information processing are two qubit gates. Although usage of controlled-not gates for photonic two qubit operations is common, controlled-phase gates provide more versatile utilization by enabling desired phase difference to be generated between qubits. Ability to determine the phase after fabrication yields extra benefit. We demonstrate a design of integrated photonic controlled-phase gate with programmable phase difference. We used a unique and practical polarization rotator which is ring resonator with a single notch.