Open quantum spin systems in semiconductor quantum dots and atoms in optical lattices:
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| Main Author: | |
|---|---|
| Format: | Thesis Book |
| Language: | English |
| Published: |
2012
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| Subjects: | |
| Online Access: | Volltext https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20120710-1108317-1-4 Inhaltsverzeichnis |
| Physical Description: | X, 146 S. graph. Darst. |
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| 245 | 1 | 0 | |a Open quantum spin systems in semiconductor quantum dots and atoms in optical lattices |c Heike Schwager |
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Record in the Search Index
| _version_ | 1804149402500071424 |
|---|---|
| adam_text | IMAGE 1
CONTENTS
ABSTRACT I
Z U S A M M E N F A S S U N G II
P U B L I C A T I O N S V
1 I N T R O D U C T I O N 1
1.1 MOTIVATION 1
1.1.1 HARNESSING DISSIPATION - IN THE CONTEXT OF THIS THESIS 3
1.2 PHYSICAL SYSTEMS 5
1.2.1 SEMICONDUCTOR QUANTUM DOTS 5
1.2.2 SEMICONDUCTOR QUANTUM DOTS - IN THE CONTEXT OF THIS THESIS . . . 8
1.2.3 ULTRACOLD ATOMS 9
1.2.4 ULTRACOLD ATOMS - IN THE CONTEXT OF THIS THESIS 10
1.3 OUTLINE OF THIS THESIS 11
2 A Q U A N T U M INTERFACE B E T W E E N LIGHT A N D NUCLEAR SPINS 15
2.1 INTRODUCTION 15
2.1.1 READER S GUIDE 17
2.2 THE SYSTEM 18
2.2.1 EFFECTIVE COUPLING BETWEEN NUCLEI AND CAVITY 21
2.3 QUANTUM INTERFACE 26
2.3.1 ENTANGLING NUCLEI WITH THE OUTPUT FIELD 27
2.3.2 WRITE-IN: TELEPORTATION CHANNEL 31
HTTP://D-NB.INFO/1029093725
IMAGE 2
2.3.3 READ-OUT 34
2.3.4 OUTPUT MODE 36
2.4 LINEAR OPTICS WITH THE NUCLEAR SPIN MODE 37
2.5 REMARKS ON INTERNAL NUCLEAR DYNAMICS AND APPROXIMATIONS 38
2.5.1 INTERNAL NUCLEAR DYNAMICS 39
2.5.2 ERRORS IN THE BOSONIC PICTURE 43
2.6 SUMMARY AND CONCLUSIONS 44
2.A SYSTEM: TOY MODEL 45
2.A.1 COUPLING CAVITY AND NUCLEAR SPINS 46
2.B PHYSICAL IMPLEMENTATION OF THE TOY MODEL 49
2.C ADIABATIC ELIMINATION 52
2.D BOSONIC DESCRIPTION OF NUCLEAR SPINS 55
2.E GAUSSIAN STATES AND OPERATIONS 57
3 A S Y M M E T R I C OPTICAL NUCLEAR S P I N P U M P I N G I N A SINGLE
Q U A N T U M D O T 6 3
3.1 INTRODUCTION 64
3.1.1 READER S GUIDE 65
3.2 THE SYSTEM 65
3.3 EXPERIMENTAL OBSERVATION OF DNP 66
3.3.1 REFERENCE MEASUREMENT: RANDOMIZING NUCLEAR SPINS 67
3.3.2 OBSERVATION OF ASYMMETRIC DNP 68
3.4 THE PHYSICAL MECHANISM 70
3.4.1 PRINCIPAL IDEA OF THE MECHANISM 70
3.4.2 DETAILED EXPLANATION OF THE PHYSICAL MECHANISM 72
3.5 THE THEORETICAL MODEL 74
3.5.1 PROPERTIES OF THE SYSTEM 74
3.5.2 THEORETICAL DESCRIPTION 75
3.6 NUMERICAL SIMULATION 79
3.6.1 THE IDEA BEHIND 79
3.6.2 RESULT: P C CURVE AND DETERMINATION OF THE OVERHAUSER SHIFT . . .
79
3.6.3 REMARK ON THE PARAMETERS 80
IMAGE 3
3.6.4 DEPOLARIZATION RATE 82
3.7 CONCLUSIONS 83
4 O N E - D I M E N S I O N A L S P I N CHAIN U N D E R DISSIPATION W I
T H C O L D A T O M S 8 5
4.1 INTRODUCTION 85
4.1.1 READER S GUIDE 86
4.2 PHYSICAL IMPLEMENTATION: DISSIPATIVE SPIN CHAIN 87
4.2.1 SETUP AND QUALITATIVE DESCRIPTION 87
4.2.2 DISSIPATION OF LINDBLAD FORM 90
4.2.3 EFFECTIVE MAGNETIC FIELD IN X-DIRECTION 93
4.2.4 EFFECTIVE SPIN HAMILTONIAN 94
4.2.5 DISSIPATIVE ONE-DIMENSIONAL SPIN CHAIN IN A MAGNETIC FIELD . . . .
95
4.3 CONCLUSIONS 97
4.A DERIVATION OF EFFECTIVE DISSIPATIVE MASTER EQUATION 97
4.B DERIVATION OF THE SPIN HAMILTONIAN 100
5 S T E A D Y S T A T E DYNAMICS: D I S C O N T I N U I T I E S A N D S
T A T E P R E P A R A T I O N 1 0 3
5.1 INTRODUCTION 104
5.1.1 READER S GUIDE 105
5.2 DISCONTINUITIES IN THE STEADY STATE DYNAMICS 105
5.2.1 NUMERICAL STUDIES OF DISCONTINUOUS BEHAVIOR IN THE STEADY STATE .
106
5.2.2 GENERAL CONDITION FOR DISCONTINUITIES IN THE STEADY STATE 109
5.2.3 STEADY STATE BEHAVIOR FOR ISING HAMILTONIANS I L L
5.3 STATE PREPARATION WITH DISSIPATIVE SPIN MODELS 112
5.3.1 FULLY ENTANGLED STEADY STATES WITH SHORT SPIN CHAINS 113
*5.3.2 FULLY ENTANGLED STEADY STATES WITH N SPINS 114
5.4 ULTRACOLD ATOMS COUPLED TO A SINGLE CAVITY MODE 115
5.5 DERIVATION OF THE MASTER EQUATION FOR SUB-WAVELENGTH ATOMIC CHAINS .
. 117
5.5.1 ATOM-LIGHT INTERACTION 118
5.5.2 MAGNETIC DIPOLE-DIPOLE INTERACTION 121
5.5.3 DESCRIPTION OF THE FULL SYSTEM 122
IMAGE 4
5.6 CONCLUSIONS 122
5.A CONDITION FOR DISCONTINUOUS BEHAVIOR 123
5.A.1 GENERAL CONDITION FOR DISCONTINUITIES IN STEADY STATE 123
5.A.2 CONDITION FOR DISCONTINUOUS BEHAVIOR FOR ISING HAMILTONIANS . . .
125
5.B PROOF: FULLY ENTANGLED STATE WITH N SPINS 127
BIBLIOGRAPHY 1 2 9
A C K N O W L E D G E M E N T S 1 4 5
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| spelling | Schwager, Heike Verfasser aut Open quantum spin systems in semiconductor quantum dots and atoms in optical lattices Heike Schwager 2012 X, 146 S. graph. Darst. txt rdacontent n rdamedia nc rdacarrier München, Techn. Univ., Diss., 2012 Quantenspinsystem (DE-588)4609091-5 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Quantenspinsystem (DE-588)4609091-5 s DE-604 Erscheint auch als Online-Ausgabe urn:nbn:de:bvb:91-diss-20120710-1108317-1-4 http://mediatum.ub.tum.de/node?id=1108317 Verlag kostenfrei Volltext https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20120710-1108317-1-4 Resolving-System DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025214896&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Schwager, Heike Open quantum spin systems in semiconductor quantum dots and atoms in optical lattices Quantenspinsystem (DE-588)4609091-5 gnd |
| subject_GND | (DE-588)4609091-5 (DE-588)4113937-9 |
| title | Open quantum spin systems in semiconductor quantum dots and atoms in optical lattices |
| title_auth | Open quantum spin systems in semiconductor quantum dots and atoms in optical lattices |
| title_exact_search | Open quantum spin systems in semiconductor quantum dots and atoms in optical lattices |
| title_full | Open quantum spin systems in semiconductor quantum dots and atoms in optical lattices Heike Schwager |
| title_fullStr | Open quantum spin systems in semiconductor quantum dots and atoms in optical lattices Heike Schwager |
| title_full_unstemmed | Open quantum spin systems in semiconductor quantum dots and atoms in optical lattices Heike Schwager |
| title_short | Open quantum spin systems in semiconductor quantum dots and atoms in optical lattices |
| title_sort | open quantum spin systems in semiconductor quantum dots and atoms in optical lattices |
| topic | Quantenspinsystem (DE-588)4609091-5 gnd |
| topic_facet | Quantenspinsystem Hochschulschrift |
| url | http://mediatum.ub.tum.de/node?id=1108317 https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20120710-1108317-1-4 http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025214896&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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