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A Method to Compute the Schrieffer–Wolff Generator for Analysis of Quantum Memory

Quantum illumination uses entangled light that consists of signal and idler modes to achieve higher detection rate of a low-reflective object in noisy environments. The best performance of quantum illumination can be achieved by measuring the returned signal mode together with the idler mode. Thus,...

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Detalles Bibliográficos
Autores principales: Kim, Dong-Hwan, Lee, Su-Yong, Jo, Yonggi, Kim, Duk Y., Kim, Zaeill, Jeong, Taek
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8535072/
https://www.ncbi.nlm.nih.gov/pubmed/34681984
http://dx.doi.org/10.3390/e23101260
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author Kim, Dong-Hwan
Lee, Su-Yong
Jo, Yonggi
Kim, Duk Y.
Kim, Zaeill
Jeong, Taek
author_facet Kim, Dong-Hwan
Lee, Su-Yong
Jo, Yonggi
Kim, Duk Y.
Kim, Zaeill
Jeong, Taek
author_sort Kim, Dong-Hwan
collection PubMed
description Quantum illumination uses entangled light that consists of signal and idler modes to achieve higher detection rate of a low-reflective object in noisy environments. The best performance of quantum illumination can be achieved by measuring the returned signal mode together with the idler mode. Thus, it is necessary to prepare a quantum memory that can keep the idler mode ideal. To send a signal towards a long-distance target, entangled light in the microwave regime is used. There was a recent demonstration of a microwave quantum memory using microwave cavities coupled with a transmon qubit. We propose an ordering of bosonic operators to efficiently compute the Schrieffer–Wolff transformation generator to analyze the quantum memory. Our proposed method is applicable to a wide class of systems described by bosonic operators whose interaction part represents a definite number of transfer in quanta.
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spelling pubmed-85350722021-10-23 A Method to Compute the Schrieffer–Wolff Generator for Analysis of Quantum Memory Kim, Dong-Hwan Lee, Su-Yong Jo, Yonggi Kim, Duk Y. Kim, Zaeill Jeong, Taek Entropy (Basel) Article Quantum illumination uses entangled light that consists of signal and idler modes to achieve higher detection rate of a low-reflective object in noisy environments. The best performance of quantum illumination can be achieved by measuring the returned signal mode together with the idler mode. Thus, it is necessary to prepare a quantum memory that can keep the idler mode ideal. To send a signal towards a long-distance target, entangled light in the microwave regime is used. There was a recent demonstration of a microwave quantum memory using microwave cavities coupled with a transmon qubit. We propose an ordering of bosonic operators to efficiently compute the Schrieffer–Wolff transformation generator to analyze the quantum memory. Our proposed method is applicable to a wide class of systems described by bosonic operators whose interaction part represents a definite number of transfer in quanta. MDPI 2021-09-27 /pmc/articles/PMC8535072/ /pubmed/34681984 http://dx.doi.org/10.3390/e23101260 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kim, Dong-Hwan
Lee, Su-Yong
Jo, Yonggi
Kim, Duk Y.
Kim, Zaeill
Jeong, Taek
A Method to Compute the Schrieffer–Wolff Generator for Analysis of Quantum Memory
title A Method to Compute the Schrieffer–Wolff Generator for Analysis of Quantum Memory
title_full A Method to Compute the Schrieffer–Wolff Generator for Analysis of Quantum Memory
title_fullStr A Method to Compute the Schrieffer–Wolff Generator for Analysis of Quantum Memory
title_full_unstemmed A Method to Compute the Schrieffer–Wolff Generator for Analysis of Quantum Memory
title_short A Method to Compute the Schrieffer–Wolff Generator for Analysis of Quantum Memory
title_sort method to compute the schrieffer–wolff generator for analysis of quantum memory
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8535072/
https://www.ncbi.nlm.nih.gov/pubmed/34681984
http://dx.doi.org/10.3390/e23101260
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