國立高雄大學圖資館 |

Language: English

Back

Probing non-equilibrium dynamics in two-dimensional quantum gases

Record Type:	Electronic resources : Monograph/item
Title/Author:	Probing non-equilibrium dynamics in two-dimensional quantum gasesby Cheng-An Chen.
Author:	Chen, Cheng-An.
Published:	Cham :Springer International Publishing :2022.
Description:	xiii, 148 p. :ill., digital ;24 cm.
Notes:	"Doctoral Thesis accepted by Purdue University, USA."
Contained By:	Springer Nature eBook
Subject:	Quantum theory.
Online resource:	https://doi.org/10.1007/978-3-031-13355-8
ISBN:	9783031133558$q(electronic bk.)

Probing non-equilibrium dynamics in two-dimensional quantum gases
Chen, Cheng-An.

Probing non-equilibrium dynamics in two-dimensional quantum gases[electronic resource] /by Cheng-An Chen. - Cham :Springer International Publishing :2022. - xiii, 148 p. :ill., digital ;24 cm. - Springer theses,2190-5061. - Springer theses..

"Doctoral Thesis accepted by Purdue University, USA."

Chapter 1. Introduction -- Chapter 2. Experimental setup -- Chapter 3. Experimental procedure -- Chapter 4. Universal quench dynamics and townes soliton formation -- Chapter 5. Scale invariant townes solitons -- Chapter 6. Quasiparticle pair-production and quantum entanglement -- Chapter 7. A compact and versatile quantum gas machine -- Chapter 8. Summary.

This thesis explores the physics of non-equilibrium quantum dynamics in homogeneous two-dimensional (2D) quantum gases. Ultracold quantum gases driven out of equilibrium have been prominent platforms for studying quantum many-body physics. However, probing non-equilibrium dynamics in conventionally trapped, inhomogeneous atomic quantum gases has been a challenging task because coexisting mass transport and spreading of quantum correlations often complicate experimental analyses. In this work, the author solves this technical hurdle by producing ultracold cesium atoms in a quasi-2D optical box potential. The exquisite optical trap allows one to remove density inhomogeneity in a degenerate quantum gas and control its dimensionality. The author also details the development of a high-resolution, in situ imaging technique to monitor the evolution of collective excitations and quantum transport down to atomic shot-noise, and at the length scale of elementary collective excitations. Meanwhile, tunable Feshbach resonances in ultracold cesium atoms permit precise and dynamical control of interactions with high temporal and even spatial resolutions. By employing these state-of-the-art techniques, the author performed interaction quenches to control the generation and evolution of quasiparticles in quantum gases, presenting the first direct measurement of quantum entanglement between interaction quench generated quasiparticle pairs in an atomic superfluid. Quenching to attractive interactions, this work shows stimulated emission of quasiparticles, leading to amplified density waves and fragmentation, forming 2D matter-wave Townes solitons that were previously considered impossible to form in equilibrium due to their instability. This thesis unveils a set of scale-invariant and universal quench dynamics and provides unprecedented tools to explore quantum entanglement transport in a homogenous quantum gas.

ISBN: 9783031133558$q(electronic bk.)

Standard No.: 10.1007/978-3-031-13355-8doiSubjects--Topical Terms:

199020
Quantum theory.

LC Class. No.: QC174.12

Dewey Class. No.: 530.12

Probing non-equilibrium dynamics in two-dimensional quantum gases
LDR:03378nmm a2200349 a 4500 001 631651
003 DE-He213
005 20221011094726.0
006 m d
007 cr nn 008maaau
008 230411s2022 sz s 0 eng d
020 $a 9783031133558$q(electronic bk.)
020 $a 9783031133541$q(paper)
024 7 $a 10.1007/978-3-031-13355-8 $2 doi
035 $a 978-3-031-13355-8
040 $a GP $c GP
041 0 $a eng
050 4 $a QC174.12
072 7 $a PHQ $2 bicssc
072 7 $a SCI057000 $2 bisacsh
072 7 $a PHQ $2 thema
082 0 4 $a 530.12 $2 23
090 $a QC174.12 $b .C518 2022
100 1 $a Chen, Cheng-An. $3 937518
245 1 0 $a Probing non-equilibrium dynamics in two-dimensional quantum gases $h [electronic resource] / $c by Cheng-An Chen.
260 $a Cham : $b Springer International Publishing : $b Imprint: Springer, $c 2022.
300 $a xiii, 148 p. : $b ill., digital ; $c 24 cm.
490 1 $a Springer theses, $x 2190-5061
500 $a "Doctoral Thesis accepted by Purdue University, USA."
505 0 $a Chapter 1. Introduction -- Chapter 2. Experimental setup -- Chapter 3. Experimental procedure -- Chapter 4. Universal quench dynamics and townes soliton formation -- Chapter 5. Scale invariant townes solitons -- Chapter 6. Quasiparticle pair-production and quantum entanglement -- Chapter 7. A compact and versatile quantum gas machine -- Chapter 8. Summary.
520 $a This thesis explores the physics of non-equilibrium quantum dynamics in homogeneous two-dimensional (2D) quantum gases. Ultracold quantum gases driven out of equilibrium have been prominent platforms for studying quantum many-body physics. However, probing non-equilibrium dynamics in conventionally trapped, inhomogeneous atomic quantum gases has been a challenging task because coexisting mass transport and spreading of quantum correlations often complicate experimental analyses. In this work, the author solves this technical hurdle by producing ultracold cesium atoms in a quasi-2D optical box potential. The exquisite optical trap allows one to remove density inhomogeneity in a degenerate quantum gas and control its dimensionality. The author also details the development of a high-resolution, in situ imaging technique to monitor the evolution of collective excitations and quantum transport down to atomic shot-noise, and at the length scale of elementary collective excitations. Meanwhile, tunable Feshbach resonances in ultracold cesium atoms permit precise and dynamical control of interactions with high temporal and even spatial resolutions. By employing these state-of-the-art techniques, the author performed interaction quenches to control the generation and evolution of quasiparticles in quantum gases, presenting the first direct measurement of quantum entanglement between interaction quench generated quasiparticle pairs in an atomic superfluid. Quenching to attractive interactions, this work shows stimulated emission of quasiparticles, leading to amplified density waves and fragmentation, forming 2D matter-wave Townes solitons that were previously considered impossible to form in equilibrium due to their instability. This thesis unveils a set of scale-invariant and universal quench dynamics and provides unprecedented tools to explore quantum entanglement transport in a homogenous quantum gas.
650 0 $a Quantum theory. $3 199020
650 0 $a Nonequilibrium thermodynamics. $3 194754
650 1 4 $a Quantum Gases and Condensates. $3 492482
650 2 4 $a Laser. $3 913435
650 2 4 $a Quantum Simulations. $3 936173
650 2 4 $a Bose-Einstein Condensate. $3 925523
650 2 4 $a Quantum Imaging and Sensing. $3 937507
710 2 $a SpringerLink (Online service) $3 273601
773 0 $t Springer Nature eBook
830 0 $a Springer theses. $3 557607
856 4 0 $u https://doi.org/10.1007/978-3-031-13355-8
950 $a Physics and Astronomy (SpringerNature-11651)