Deterministic spin-wave interferometer based on Rydberg blockade

TL;DR

This paper proposes a deterministic method to generate spin-wave NOON states using Rydberg blockade, enhancing quantum measurement capabilities with higher efficiency than previous probabilistic approaches.

Contribution

The authors introduce a novel deterministic protocol for creating atomic spin-wave NOON states employing Rydberg blockade, improving efficiency over prior probabilistic methods.

Findings

Efficient deterministic protocol for SW NOON state creation

Analysis of potential errors in practical implementation

Feasible experimental scheme suggested

Abstract

The spin-wave (SW) NOON state is an $N$-particle Fock state with two atomic spin-wave modes maximally entangled. Attributed to the property that the phase is sensitive to collective atomic motion, the SW NOON state can be utilized as a novel atomic interferometer and has promising application in quantum enhanced measurement. In this paper we propose an efficient protocol to deterministically produce the atomic SW NOON state by employing Rydberg blockade. Possible errors in practical manipulations are analyzed. A feasible experimental scheme is suggested. Our scheme is far more efficient than the recent experimentally demonstrated one, which only creates a heralded second-order SW NOON state.