CLEO®/Europe-EQEC 2019 Rotating spacetime and wave amplification in superfluids of light

Maria Chiara Braidotti; Radivoje Prizia; Calum Maitland; Angus Prain; Francesco Marino; Daniele Faccio

CLEO^®/Europe-EQEC 2019 Rotating spacetime and wave amplification in superfluids of light

Maria Chiara Braidotti, Radivoje Prizia, Calum Maitland, Angus Prain, Francesco Marino, Daniele Faccio

School of Engineering & Physical Sciences

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Penrose superradiance is the amplification of waves scattered by a rapidly rotating object. This process was proposed in 1969 by Penrose for a rotating black hole [1] and in 1971 by Zel'dovich for electromagnetic waves scattered by a metallic rotating cylinder [2]. Wave whose angular frequency ω satisfies the condition ω < mΩ are amplified, where m is the waves' angular momentum and Ω is the cylinder's angular velocity. Superradiant scattering is not unique to for electromagnetic waves. Recently a direct measurement of superradiance in water waves has been reported in a draining bathtub experiment [3].

Original language	English
Title of host publication	European Quantum Electronics Conference 2019
Publisher	OSA Publishing
ISBN (Electronic)	9781557528209
Publication status	Published - 23 Jun 2019
Event	European Quantum Electronics Conference 2019 - Munich, Germany Duration: 23 Jun 2019 → 27 Jun 2019

Conference

Conference	European Quantum Electronics Conference 2019
Abbreviated title	EQEC 2019
Country/Territory	Germany
City	Munich
Period	23/06/19 → 27/06/19

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Mechanics of Materials

Cite this

@inproceedings{ca952571a39548cc906493357a69fa30,

title = "CLEO{\textregistered}/Europe-EQEC 2019 Rotating spacetime and wave amplification in superfluids of light",

abstract = "Penrose superradiance is the amplification of waves scattered by a rapidly rotating object. This process was proposed in 1969 by Penrose for a rotating black hole [1] and in 1971 by Zel'dovich for electromagnetic waves scattered by a metallic rotating cylinder [2]. Wave whose angular frequency ω satisfies the condition ω < mΩ are amplified, where m is the waves' angular momentum and Ω is the cylinder's angular velocity. Superradiant scattering is not unique to for electromagnetic waves. Recently a direct measurement of superradiance in water waves has been reported in a draining bathtub experiment [3].",

author = "Braidotti, {Maria Chiara} and Radivoje Prizia and Calum Maitland and Angus Prain and Francesco Marino and Daniele Faccio",

note = "Publisher Copyright: {\textcopyright} 2019 IEEE; European Quantum Electronics Conference 2019, EQEC 2019 ; Conference date: 23-06-2019 Through 27-06-2019",

year = "2019",

month = jun,

day = "23",

language = "English",

booktitle = "European Quantum Electronics Conference 2019",

publisher = "OSA Publishing",

address = "United States",

}

TY - GEN

T1 - CLEO®/Europe-EQEC 2019 Rotating spacetime and wave amplification in superfluids of light

AU - Braidotti, Maria Chiara

AU - Prizia, Radivoje

AU - Maitland, Calum

AU - Prain, Angus

AU - Marino, Francesco

AU - Faccio, Daniele

PY - 2019/6/23

Y1 - 2019/6/23

N2 - Penrose superradiance is the amplification of waves scattered by a rapidly rotating object. This process was proposed in 1969 by Penrose for a rotating black hole [1] and in 1971 by Zel'dovich for electromagnetic waves scattered by a metallic rotating cylinder [2]. Wave whose angular frequency ω satisfies the condition ω < mΩ are amplified, where m is the waves' angular momentum and Ω is the cylinder's angular velocity. Superradiant scattering is not unique to for electromagnetic waves. Recently a direct measurement of superradiance in water waves has been reported in a draining bathtub experiment [3].

AB - Penrose superradiance is the amplification of waves scattered by a rapidly rotating object. This process was proposed in 1969 by Penrose for a rotating black hole [1] and in 1971 by Zel'dovich for electromagnetic waves scattered by a metallic rotating cylinder [2]. Wave whose angular frequency ω satisfies the condition ω < mΩ are amplified, where m is the waves' angular momentum and Ω is the cylinder's angular velocity. Superradiant scattering is not unique to for electromagnetic waves. Recently a direct measurement of superradiance in water waves has been reported in a draining bathtub experiment [3].

UR - http://www.scopus.com/inward/record.url?scp=85084568349&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:85084568349

BT - European Quantum Electronics Conference 2019

PB - OSA Publishing

T2 - European Quantum Electronics Conference 2019

Y2 - 23 June 2019 through 27 June 2019

ER -

CLEO^®/Europe-EQEC 2019 Rotating spacetime and wave amplification in superfluids of light

Abstract

Conference

ASJC Scopus subject areas

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