@article{Lee:2023:10.1103/PhysRevA.107.022423,
author = {Lee, J and Park, J and Kim, J and Kim, MS and Nha, H},
doi = {10.1103/PhysRevA.107.022423},
journal = {Physical Review A},
title = {Non-Gaussian entanglement criteria for atomic homodyne detection},
url = {http://dx.doi.org/10.1103/PhysRevA.107.022423},
volume = {107},
year = {2023}
}

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TY  - JOUR
AB  - Homodyne measurement is a crucial tool widely used to address continuous variables for bosonic quantum systems. While an ideal homodyne detection provides a powerful analysis, e.g., to effectively measure quadrature amplitudes of light in quantum optics, it relies on the use of a strong reference field, the so-called local oscillator, typically in a coherent state. Such a strong coherent local oscillator may not be readily available, particularly for a massive quantum system like a Bose-Einstein condensate, posing a substantial challenge in dealing with continuous variables appropriately. It is necessary to establish a practical framework that includes the effects of nonideal local oscillators for a rigorous assessment of various quantum tests and applications. We here develop entanglement criteria beyond a Gaussian regime applicable for this realistic homodyne measurement that do not require assumptions on the state of local oscillators. We discuss the working conditions of homodyne detection to effectively detect non-Gaussian quantum entanglement under various states of local oscillators.
AU  - Lee,J
AU  - Park,J
AU  - Kim,J
AU  - Kim,MS
AU  - Nha,H
DO  - 10.1103/PhysRevA.107.022423
PY  - 2023///
SN  - 2469-9926
TI  - Non-Gaussian entanglement criteria for atomic homodyne detection
T2  - Physical Review A
UR  - http://dx.doi.org/10.1103/PhysRevA.107.022423
UR  - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000934032600003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
UR  - https://journals.aps.org/pra/abstract/10.1103/PhysRevA.107.022423
UR  - http://hdl.handle.net/10044/1/106923
VL  - 107
ER  - 

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