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Related Experiment Video

Updated: May 13, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

Nonlinear optics quantum computing with circuit QED.

Prabin Adhikari1, Mohammad Hafezi, J M Taylor

  • 1Joint Quantum Institute, University of Maryland, College Park, Maryland 20742, USA.

Physical Review Letters
|February 26, 2013
PubMed
Summary
This summary is machine-generated.

We propose a circuit quantum electrodynamics (cQED) approach for nonlinear quantum computing using microwave photons. This method offers improved noise tolerance and fast operations for a deterministic two-photon phase gate.

Related Experiment Videos

Last Updated: May 13, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

Area of Science:

  • Quantum Information Science
  • Quantum Computing
  • Superconducting Circuits

Background:

  • Linear optical elements are insufficient for universal quantum computing, necessitating optical nonlinearity.
  • Photons are a promising platform for quantum information processing.
  • Achieving nonlinearity in photonic systems is a key challenge.

Purpose of the Study:

  • To propose a novel circuit-Quantum Electrodynamics (cQED) approach for nonlinear quantum computing.
  • To demonstrate a deterministic two-photon phase gate using a hybrid quantum system.
  • To explore microwave-based nonlinear optics for quantum computation.

Main Methods:

  • Utilized a hybrid quantum system consisting of an LC resonator coupled to a superconducting flux qubit.
  • Implemented nonlinear coupling within the microwave regime.
  • Investigated a deterministic two-photon phase gate as a key operation.

Main Results:

  • The proposed cQED approach enables nonlinear quantum operations in the microwave domain.
  • The hybrid system demonstrated a functional nonlinear coupling.
  • The approach exhibits enhanced tolerance to qubit noise compared to self-Kerr nonlinearity.
  • Fast operational speeds were maintained.

Conclusions:

  • Circuit-QED offers a viable pathway for achieving nonlinear optics quantum computing.
  • The hybrid system provides a robust platform for deterministic quantum gates.
  • This method presents advantages in noise resilience and operational speed for quantum information processing.