Family of CV states of definite parity and their metrological power

TL;DR

This paper introduces a new family of continuous variable quantum states with definite parity, derived from even squeezed vacuum states by photon subtraction, and explores their potential for quantum metrology.

Contribution

The paper presents a novel family of CV states with definite parity, expanding the toolkit for quantum metrology applications.

Findings

States exhibit unique parity properties.

Potential for enhanced quantum measurement precision.

Framework for generating these states from squeezed vacuum.

Abstract

We introduce a family of new continuous variable states of definite parity originating from even single mode squeezed vacuum state by subtracting an arbitrary number of photons from it.