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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,...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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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. |
format | Online Article Text |
id | pubmed-8535072 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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