Measuring work and heat in ultracold quantum gases

We propose a feasible experimental scheme to direct measure heat and work in cold atomic setups. The method is based on a recent proposal which shows that work is a positive operator valued measure (POVM). In the present contribution, we demonstrate that the interaction between the atoms and the lig...

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Autores principales:	Roncaglia, Augusto José, Paz, Juan Pablo
Publicado:	2015
Materias:	quantum gases quantum thermodynamics work in quantum mechanics Atom lasers Gases Quantum theory Thermodynamics Direct measures Experimental scheme Fluctuation theorems Positive-operator-valued measures Quantum gas Quantum thermodynamics Thermodynamic process Ultracold quantum gas Atoms
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13672630_v17_n_p_DeChiara http://hdl.handle.net/20.500.12110/paper_13672630_v17_n_p_DeChiara
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_13672630_v17_n_p_DeChiara
record_format	dspace
spelling	paper:paper_13672630_v17_n_p_DeChiara2023-06-08T16:12:08Z Measuring work and heat in ultracold quantum gases Roncaglia, Augusto José Paz, Juan Pablo quantum gases quantum thermodynamics work in quantum mechanics Atom lasers Gases Quantum theory Thermodynamics Direct measures Experimental scheme Fluctuation theorems Positive-operator-valued measures Quantum gas Quantum thermodynamics Thermodynamic process Ultracold quantum gas Atoms We propose a feasible experimental scheme to direct measure heat and work in cold atomic setups. The method is based on a recent proposal which shows that work is a positive operator valued measure (POVM). In the present contribution, we demonstrate that the interaction between the atoms and the light polarization of a probe laser allows us to implement such POVM. In this way the work done on or extracted from the atoms after a given process is encoded in the light quadrature that can be measured with a standard homodyne detection. The protocol allows one to verify fluctuation theorems and study properties of the non-unitary dynamics of a given thermodynamic process. © 2015 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. Fil:Roncaglia, A.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Paz, J.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13672630_v17_n_p_DeChiara http://hdl.handle.net/20.500.12110/paper_13672630_v17_n_p_DeChiara
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	quantum gases quantum thermodynamics work in quantum mechanics Atom lasers Gases Quantum theory Thermodynamics Direct measures Experimental scheme Fluctuation theorems Positive-operator-valued measures Quantum gas Quantum thermodynamics Thermodynamic process Ultracold quantum gas Atoms
spellingShingle	quantum gases quantum thermodynamics work in quantum mechanics Atom lasers Gases Quantum theory Thermodynamics Direct measures Experimental scheme Fluctuation theorems Positive-operator-valued measures Quantum gas Quantum thermodynamics Thermodynamic process Ultracold quantum gas Atoms Roncaglia, Augusto José Paz, Juan Pablo Measuring work and heat in ultracold quantum gases
topic_facet	quantum gases quantum thermodynamics work in quantum mechanics Atom lasers Gases Quantum theory Thermodynamics Direct measures Experimental scheme Fluctuation theorems Positive-operator-valued measures Quantum gas Quantum thermodynamics Thermodynamic process Ultracold quantum gas Atoms
description	We propose a feasible experimental scheme to direct measure heat and work in cold atomic setups. The method is based on a recent proposal which shows that work is a positive operator valued measure (POVM). In the present contribution, we demonstrate that the interaction between the atoms and the light polarization of a probe laser allows us to implement such POVM. In this way the work done on or extracted from the atoms after a given process is encoded in the light quadrature that can be measured with a standard homodyne detection. The protocol allows one to verify fluctuation theorems and study properties of the non-unitary dynamics of a given thermodynamic process. © 2015 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
author	Roncaglia, Augusto José Paz, Juan Pablo
author_facet	Roncaglia, Augusto José Paz, Juan Pablo
author_sort	Roncaglia, Augusto José
title	Measuring work and heat in ultracold quantum gases
title_short	Measuring work and heat in ultracold quantum gases
title_full	Measuring work and heat in ultracold quantum gases
title_fullStr	Measuring work and heat in ultracold quantum gases
title_full_unstemmed	Measuring work and heat in ultracold quantum gases
title_sort	measuring work and heat in ultracold quantum gases
publishDate	2015
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13672630_v17_n_p_DeChiara http://hdl.handle.net/20.500.12110/paper_13672630_v17_n_p_DeChiara
work_keys_str_mv	AT roncagliaaugustojose measuringworkandheatinultracoldquantumgases AT pazjuanpablo measuringworkandheatinultracoldquantumgases
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Measuring work and heat in ultracold quantum gases

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