Quantum-circuit black hole lasers

Abstract A black hole laser in analogues of gravity amplifies Hawking radiation, which is unlikely to be measured in real black holes, and makes it observable. There have been proposals to realize such black hole lasers in various systems. However, no progress has been made in electric circuits for...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autor principal:	Haruna Katayama
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0835f4fd40f44d0193c249eacb5a88c0
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:0835f4fd40f44d0193c249eacb5a88c0
record_format	dspace
spelling	oai:doaj.org-article:0835f4fd40f44d0193c249eacb5a88c02021-12-02T17:18:20ZQuantum-circuit black hole lasers10.1038/s41598-021-98456-02045-2322https://doaj.org/article/0835f4fd40f44d0193c249eacb5a88c02021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-98456-0https://doaj.org/toc/2045-2322Abstract A black hole laser in analogues of gravity amplifies Hawking radiation, which is unlikely to be measured in real black holes, and makes it observable. There have been proposals to realize such black hole lasers in various systems. However, no progress has been made in electric circuits for a long time, despite their many advantages such as high-precision electromagnetic wave detection. Here we propose a black hole laser in Josephson transmission lines incorporating metamaterial elements capable of producing Hawking-pair propagation modes and a Kerr nonlinearity due to the Josephson nonlinear inductance. A single dark soliton obeying the nonlinear Schrödinger equation produces a black hole-white hole horizon pair that acts as a laser cavity through a change in the refractive index due to the Kerr effect. We show that the resulting laser is a squeezed-state laser characterized by squeezing parameters. We also evaluate the degree of quantum correlation between Hawking and its partner radiations using entanglement entropy which does not require simultaneous measurements between them. As a result, the obtained entanglement entropy depending on the soliton velocity provides strong evidence that the resulting laser is derived from Hawking radiation with quantum correlation generated by pair production from the vacuum.Haruna KatayamaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Haruna Katayama Quantum-circuit black hole lasers
description	Abstract A black hole laser in analogues of gravity amplifies Hawking radiation, which is unlikely to be measured in real black holes, and makes it observable. There have been proposals to realize such black hole lasers in various systems. However, no progress has been made in electric circuits for a long time, despite their many advantages such as high-precision electromagnetic wave detection. Here we propose a black hole laser in Josephson transmission lines incorporating metamaterial elements capable of producing Hawking-pair propagation modes and a Kerr nonlinearity due to the Josephson nonlinear inductance. A single dark soliton obeying the nonlinear Schrödinger equation produces a black hole-white hole horizon pair that acts as a laser cavity through a change in the refractive index due to the Kerr effect. We show that the resulting laser is a squeezed-state laser characterized by squeezing parameters. We also evaluate the degree of quantum correlation between Hawking and its partner radiations using entanglement entropy which does not require simultaneous measurements between them. As a result, the obtained entanglement entropy depending on the soliton velocity provides strong evidence that the resulting laser is derived from Hawking radiation with quantum correlation generated by pair production from the vacuum.
format	article
author	Haruna Katayama
author_facet	Haruna Katayama
author_sort	Haruna Katayama
title	Quantum-circuit black hole lasers
title_short	Quantum-circuit black hole lasers
title_full	Quantum-circuit black hole lasers
title_fullStr	Quantum-circuit black hole lasers
title_full_unstemmed	Quantum-circuit black hole lasers
title_sort	quantum-circuit black hole lasers
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/0835f4fd40f44d0193c249eacb5a88c0
work_keys_str_mv	AT harunakatayama quantumcircuitblackholelasers
_version_	1718381125407080448

Quantum-circuit black hole lasers

Ejemplares similares