Deterministic generations of NOON states via shortcuts to adiabaticity

TL;DR

This paper introduces a fast, high-fidelity method for generating photonic NOON states using shortcuts to adiabaticity, improving robustness against decoherence and operational imperfections in quantum information and metrology.

Contribution

The paper presents a novel scheme employing shortcuts to adiabaticity for deterministic NOON state generation, surpassing traditional Rabi oscillation methods in speed and fidelity.

Findings

High-fidelity NOON states achieved via STA in circuit QED systems

Method is robust against operational imperfections

Generation process is faster than traditional techniques

Abstract

NOON states play the important roles in quantum information processings and quantum metrology, but the fidelities of these states generated previously are limited typically by the practically-unavoidable decoherence and operational imperfections. Here, we propose an efficient scheme to generate photonic NOON states alternatively by rapid population passage technique via shortcut to adiabaticity (STA), rather than the usual Rabi oscillations. Since the deterministic population passages based on the STAs are insensitive to details of the operations and can be implemented as fast as the Rabi oscillations, the fidelity of the generated NOON state could be satisfactorily high. The feasibility of the proposal is demonstrated specifically with the experimental circuit QED systems by rapidly driving two artifical qutrits.