- tqo - lists.physik.tu-darmstadt.de

Fwd: Invitation to Quantum Technology Seminar – Prof. Ilja Gerhardt (June 3)
by Enno Giese 26 Mai '25

26 Mai '25

FYI -------- Weitergeleitete Nachricht -------- Betreff: Re: Invitation to Quantum Technology Seminar – Prof. Ilja Gerhardt (June 3) Datum: Fri, 23 May 2025 14:59:07 +0200 Von: Gräfe, Markus <markus.graefe(a)tu-darmstadt.de> An: Gerhard Birkl <gerhard.birkl(a)physik.tu-darmstadt.de>, Thomas Halfmann <thomas.halfmann(a)physik.tu-darmstadt.de>, Reinhold Walser <reinhold.walser(a)physik.tu-darmstadt.de>, Thomas Walther <thomas.walther(a)physik.tu-darmstadt.de>, Bagnoud, Vincent <vincent.bagnoud(a)tu-darmstadt.de>, Giese, Enno <enno.giese(a)tu-darmstadt.de>, Claudiu Genes <claudiu.genes(a)physik.tu-darmstadt.de>, Frosch, Torsten <torsten.frosch(a)biophotonics.tu-darmstadt.de>, Merian, Andreas <andreas.merian(a)biophotonics.tu-darmstadt.de>, Gachechiladze, Mariami <mariami.gachechiladze(a)tu-darmstadt.de>, Bernhard Urbaszek <bernhard.urbaszek(a)pkm.tu-darmstadt.de>, pietralla(a)ikp.tu-darmstadt.de <pietralla(a)ikp.tu-darmstadt.de>, Liebchen, Benno <benno.liebchen(a)tu-darmstadt.de>, Emanuel Schneck <emanuel.schneck(a)pkm.tu-darmstadt.de>, Regine von Klitzing <regine.klitzing(a)pkm.tu-darmstadt.de>, Vogel, Michael <michael.vogel(a)tu-darmstadt.de>, Kuschel, Stephan <stephan.kuschel(a)tu-darmstadt.de> Kopie (CC): EFQ EFQ <101071_allmailuser(a)ads.tu-darmstadt.de>, Carlos Fett <carlosft.enrique(a)gmail.com>, moritz.kuhn(a)stud.tu-darmstadt.de <moritz.kuhn(a)stud.tu-darmstadt.de>, Noel Pongratz (noel.pongratz(a)stud.tu-darmstadt.de) <noel.pongratz(a)stud.tu-darmstadt.de>, bara.jarrar(a)stud.tu-darmstadt.de <bara.jarrar(a)stud.tu-darmstadt.de>, simon_paul_felix.zoeller(a)stud.tu-darmstadt.de <simon_paul_felix.zoeller(a)stud.tu-darmstadt.de> Dear all, Since the time for the QT-seminar is not known by everyone: The talk will be at *16:00* Best regards, Markus -- Prof. Dr. Markus Gräfe Experimental Solid State Quantum Optics Institute for Applied Physics Technical University of Darmstadt Otto-Berndt-Straße 3 64287 Darmstadt Germany +49 6151 16-20451 markus.graefe(a)tu-darmstadt.de <mailto:markus.graefe@tu-darmstadt.de> https://www.iap.tu-darmstadt.de/efq <https://www.iap.tu-darmstadt.de/efq> *Von: *"Gräfe, Markus" <markus.graefe(a)tu-darmstadt.de> *Datum: *Mittwoch, 21. Mai 2025 um 22:03 *An: *Gerhard Birkl <gerhard.birkl(a)physik.tu-darmstadt.de>, Thomas Halfmann <thomas.halfmann(a)physik.tu-darmstadt.de>, Reinhold Walser <reinhold.walser(a)physik.tu-darmstadt.de>, Thomas Walther <thomas.walther(a)physik.tu-darmstadt.de>, "Bagnoud, Vincent" <vincent.bagnoud(a)tu-darmstadt.de>, "Giese, Enno" <enno.giese(a)tu-darmstadt.de>, Claudiu Genes <claudiu.genes(a)physik.tu-darmstadt.de>, "Frosch, Torsten" <torsten.frosch(a)biophotonics.tu-darmstadt.de>, "Merian, Andreas" <andreas.merian(a)biophotonics.tu-darmstadt.de>, "Gachechiladze, Mariami" <mariami.gachechiladze(a)tu-darmstadt.de>, Bernhard Urbaszek <bernhard.urbaszek(a)pkm.tu-darmstadt.de>, "pietralla(a)ikp.tu-darmstadt.de" <pietralla(a)ikp.tu-darmstadt.de>, "Liebchen, Benno" <benno.liebchen(a)tu-darmstadt.de>, Emanuel Schneck <emanuel.schneck(a)pkm.tu-darmstadt.de>, Regine von Klitzing <regine.klitzing(a)pkm.tu-darmstadt.de>, "Vogel, Michael" <michael.vogel(a)tu-darmstadt.de>, "Kuschel, Stephan" <stephan.kuschel(a)tu-darmstadt.de> *Cc: *EFQ EFQ <101071_allmailuser(a)ads.tu-darmstadt.de>, Carlos Fett <carlosft.enrique(a)gmail.com>, "moritz.kuhn(a)stud.tu-darmstadt.de" <moritz.kuhn(a)stud.tu-darmstadt.de>, "Noel Pongratz (noel.pongratz(a)stud.tu-darmstadt.de)" <noel.pongratz(a)stud.tu-darmstadt.de>, "bara.jarrar(a)stud.tu-darmstadt.de" <bara.jarrar(a)stud.tu-darmstadt.de>, "simon_paul_felix.zoeller(a)stud.tu-darmstadt.de" <simon_paul_felix.zoeller(a)stud.tu-darmstadt.de> *Betreff: *Invitation to Quantum Technology Seminar – Prof. Ilja Gerhardt (June 3) Dear colleagues, It is my pleasure to invite you to our upcoming *Quantum Technology Seminar* on *Monday, June 3*, which will take place in the *Handbibliothek*. We are delighted to welcome *Prof. Ilja Gerhardt* from *Leibniz University Hannover* as our guest speaker. He will give a talk entitled: *“From Molecules... to Atoms... to Quantum Entanglement”* Further details can be found in the attached abstract. Please feel free to *forward this invitation to your research groups*. Thank you in advance for spreading the word. Best regards, Markus -- Prof. Dr. Markus Gräfe Experimental Solid State Quantum Optics Institute for Applied Physics Technical University of Darmstadt Otto-Berndt-Straße 3 64287 Darmstadt Germany +49 6151 16-20451 markus.graefe(a)tu-darmstadt.de <mailto:markus.graefe@tu-darmstadt.de> https://www.iap.tu-darmstadt.de/efq <https://www.iap.tu-darmstadt.de/efq>

1 0

Fwd: Invitation to Quantum Technology Seminar – Prof. Ilja Gerhardt (June 3)
by Enno Giese 22 Mai '25

22 Mai '25

FYI -------- Weitergeleitete Nachricht -------- Betreff: Invitation to Quantum Technology Seminar – Prof. Ilja Gerhardt (June 3) Datum: Wed, 21 May 2025 22:03:54 +0200 Von: Gräfe, Markus <markus.graefe(a)tu-darmstadt.de> An: Gerhard Birkl <gerhard.birkl(a)physik.tu-darmstadt.de>, Thomas Halfmann <thomas.halfmann(a)physik.tu-darmstadt.de>, Reinhold Walser <reinhold.walser(a)physik.tu-darmstadt.de>, Thomas Walther <thomas.walther(a)physik.tu-darmstadt.de>, Bagnoud, Vincent <vincent.bagnoud(a)tu-darmstadt.de>, Giese, Enno <enno.giese(a)tu-darmstadt.de>, Claudiu Genes <claudiu.genes(a)physik.tu-darmstadt.de>, Frosch, Torsten <torsten.frosch(a)biophotonics.tu-darmstadt.de>, Merian, Andreas <andreas.merian(a)biophotonics.tu-darmstadt.de>, Gachechiladze, Mariami <mariami.gachechiladze(a)tu-darmstadt.de>, Bernhard Urbaszek <bernhard.urbaszek(a)pkm.tu-darmstadt.de>, pietralla(a)ikp.tu-darmstadt.de <pietralla(a)ikp.tu-darmstadt.de>, Liebchen, Benno <benno.liebchen(a)tu-darmstadt.de>, Emanuel Schneck <emanuel.schneck(a)pkm.tu-darmstadt.de>, Regine von Klitzing <regine.klitzing(a)pkm.tu-darmstadt.de>, Vogel, Michael <michael.vogel(a)tu-darmstadt.de>, Kuschel, Stephan <stephan.kuschel(a)tu-darmstadt.de> Kopie (CC): EFQ EFQ <101071_allmailuser(a)ads.tu-darmstadt.de>, Carlos Fett <carlosft.enrique(a)gmail.com>, moritz.kuhn(a)stud.tu-darmstadt.de <moritz.kuhn(a)stud.tu-darmstadt.de>, Noel Pongratz (noel.pongratz(a)stud.tu-darmstadt.de) <noel.pongratz(a)stud.tu-darmstadt.de>, bara.jarrar(a)stud.tu-darmstadt.de <bara.jarrar(a)stud.tu-darmstadt.de>, simon_paul_felix.zoeller(a)stud.tu-darmstadt.de <simon_paul_felix.zoeller(a)stud.tu-darmstadt.de> Dear colleagues, It is my pleasure to invite you to our upcoming *Quantum Technology Seminar* on *Monday, June 3*, which will take place in the *Handbibliothek*. We are delighted to welcome *Prof. Ilja Gerhardt* from *Leibniz University Hannover* as our guest speaker. He will give a talk entitled: *“From Molecules... to Atoms... to Quantum Entanglement”* Further details can be found in the attached abstract. Please feel free to *forward this invitation to your research groups*. Thank you in advance for spreading the word. Best regards, Markus -- Prof. Dr. Markus Gräfe Experimental Solid State Quantum Optics Institute for Applied Physics Technical University of Darmstadt Otto-Berndt-Straße 3 64287 Darmstadt Germany +49 6151 16-20451 markus.graefe(a)tu-darmstadt.de <mailto:markus.graefe@tu-darmstadt.de> https://www.iap.tu-darmstadt.de/efq <https://www.iap.tu-darmstadt.de/efq>

1 0

Fwd: REMINDER: Colloquium by Nathan Lundblad at LUH 22.May 2025; 16- 17:30 pm
by Enno Giese 21 Mai '25

21 Mai '25

FYI -------- Weitergeleitete Nachricht -------- Betreff: REMINDER: Colloquium by Nathan Lundblad at LUH 22.May 2025; 16- 17:30 pm Datum: Wed, 21 May 2025 07:25:17 +0200 Von: Anke Schmidt <anke.schmidt(a)DQ-MAT.UNI-HANNOVER.DE> Antwort an: Anke Schmidt <anke.schmidt(a)DQ-MAT.UNI-HANNOVER.DE> An: MEMBERS-DQMAT(a)LISTSERV.UNI-HANNOVER.DE Dear DQ-mat members and interested scientists, We are are pleased to announce the next Colloquium which will take place on *_Thursday, 22.May 2025_*_- *16:00 - 17:30 pm* __LUH__, Building 1101, Room D326, Welfengarten 1, 30167 Hannover _ Colloquiumby *Nathan Lundblad - *Bates College, Maine, United States of America Title: Ultracold Bubbles in Space: Atomic Physics Aboard the International Space Station Abstract: Exploring the effects of geometry, topology, dimensionality, and interactions on ultracold atomic ensembles has been a continually fruitful line of inquiry in the decades since the first observation of Bose-Einstein condensation (BEC). One previously unexplored configuration for ultracold ensembles is that of a bubble or shell, where trapped atoms are confined in the vicinity of a spherical or ellipsoidal surface. Such a quantum system could offer new collective modes, topologically-sensitive behavior of quantized vortices, self-interference and shell collapse, as well as the exploration of trapped ultracold systems with mm-scale spatial extent. While techniques for the generation of bubble-shaped traps have been known since 2001, terrestrial gravity has thus far limited the convenient observation of ultracold bubbles. With the construction of the NASA Cold Atom Lab (CAL) facility and its subsequent delivery in 2018 to the International Space Station (ISS) and commissioning as an orbital BEC user facility, experimental atomic physics schemes that require a sustained microgravity environment are now possible. I will review CAL observations of trapped bubbles of ultracold atoms, including a variety of bubble-trap configurations that are possible with this apparatus. I will also discuss the thermodynamics of ultracold bubbles and review open questions being explored in the ongoing second science run of CAL aboard ISS, which feature improved bubble aspect ratios and filling as well as improved imaging; I will also review upcoming changes to the CAL facility, recent progress made with shell structures in terrestrial laboratories, and the bubble-making potential of the Einstein Elevator. Access data for the transfer: Zoom Access:**https://us04web.zoom.us/j/932734874 This talk is part of the "Virtual Seminar on Precision Physics and Fundamental Symmetries" series and of the SFB DQ-mat colloquium series:https://indico.cern.ch/category/12183/ Best regard, Anke Schmidt -- Leibniz Universität Hannover DQ-Mat-Office, Room 308 Callinstraße 36 30167 Hannover Tel: +49 511 76214887 Fax: +49 511 76217243 Email:anke.schmidt@dq-mat.uni-hannover.de https://www.dq-mat.uni-hannover.de/ https://www.quest-lfs.uni-hannover.de/ https://www.hitec.uni-hannover.de/ https://www.quantumfrontiers.uni-hannover.de/ https://www.qvls.de

1 0

Fwd: REMINDER: Block Lecture by Michaele Fleischhauer at LUH, 22./23. May 2025, 10:15 -11:45 am
by Enno Giese 21 Mai '25

21 Mai '25

FYI -------- Weitergeleitete Nachricht -------- Betreff: REMINDER: Block Lecture by Michaele Fleischhauer at LUH, 22./23. May 2025, 10:15 -11:45 am Datum: Wed, 21 May 2025 07:23:29 +0200 Von: Anke Schmidt <anke.schmidt(a)DQ-MAT.UNI-HANNOVER.DE> Antwort an: Anke Schmidt <anke.schmidt(a)DQ-MAT.UNI-HANNOVER.DE> An: MEMBERS-DQMAT(a)LISTSERV.UNI-HANNOVER.DE Dear DQ-mat members and interested scientists, We are are pleased to announce the next Block Lecture which will take place on *_Thursday, 22.May 2025_*_- 10:15- 11.45 am - Part I __LUH__, Building 1101, Room D326, Welfengarten 1, 30167 Hannover _ **_Friday, 23 May 2025_**_- 10:15 - 11:45 am - Part II _ _LUH, Room 0001, Building 3430, LNQE Building, Schneiderberg 39, 30167 Hannover_ Block Lectureby *Michael Fleischhauer - *University of Kaiserslautern, Germany Title: *Topology in open many-body systems* Abstract: Topological states of matter have fascinated physicists since a long time. The notion of topology is however ususally associated with ground states of (many-body)-Hamiltonians, which are pure. So what is left of it at finite temperatures and can topological protection be extended to non-equilibrium steady states (NESS) of open systems? Can suitable observables be constructed that preserve the integrity of topological invariants for mixed states and what are measurable consequences of their existence? Can we classify the topology of finite-temperature and NESS using generalized symmetries? Access data for the transfer: https://uni-hannover.webex.com/uni-hannover-en/j.php?MTID=mac7e81392b3eb1c4… Best regards, Anke Schmidt -- Leibniz Universität Hannover DQ-Mat-Office, Room 308 Callinstraße 36 30167 Hannover Tel: +49 511 76214887 Fax: +49 511 76217243 Email:anke.schmidt@dq-mat.uni-hannover.de https://www.dq-mat.uni-hannover.de/ https://www.quest-lfs.uni-hannover.de/ https://www.hitec.uni-hannover.de/ https://www.quantumfrontiers.uni-hannover.de/ https://www.qvls.de

1 0

**EXTERN** Fwd: [BridgeQG COST Action] Fwd: School of Quantum Foundations: Speakable and Unspeakable, August 18–27, 2025, University of Split, Croatia
by Enno Giese 14 Mai '25

14 Mai '25

FYI -------- Weitergeleitete Nachricht -------- Betreff: [BridgeQG COST Action] Fwd: School of Quantum Foundations: Speakable and Unspeakable, August 18–27, 2025, University of Split, Croatia Datum: Wed, 14 May 2025 13:47:41 +0200 Von: Giulia Gubitosi <giulia.gubitosi(a)unina.it> An: Giulia Gubitosi <giulia.gubitosi(a)gmail.com> Kopie (CC): Sandro Donadi <s.donadi(a)qub.ac.uk> Dear BridgeQG members, please find below the announcement of a school that might be of interest for some of you. Best regards, Giulia Gubitosi Chair of COST Action BridgeQG PS. Please feel free to advertise this COST Action to colleagues who might be interested in joining. Application for membership can be done through the website https://www.cost.eu/actions/CA23130/. ======= Dear all, We are pleased to announce the *School of Quantum Foundations: Speakable and Unspeakable*, a ten-day event dedicated to the exploration of fundamental questions in quantum mechanics. *Dates:* August 18–27, 2025 *Location:* University of Split, Croatia *Website and Application:* https://www.qmts.it/conferences/school-of-quantum-foundations-speakable-and… <https://www.qmts.it/conferences/school-of-quantum-foundations-speakable-and…> The school is intended for graduate students, postdoctoral researchers, and early-career scientists interested in foundational questions in quantum theory. It will feature lectures and in-depth discussions led by the following invited speakers: * *Tim Maudlin* (NYU) * *Ward Struyve* (KU Leuven) * *Angelo Bassi* (University of Trieste) * *Sandro Donadi* (Queen’s University Belfast) * *Matteo Carlesso* (University of Trieste) Topics will include quantum nonlocality, Bohmian mechanics, collapse models, decoherence, optomechanics and related foundational issues. *Application deadline:* 30th June 2025 Participation is limited, and early applications are strongly encouraged. Please feel free to share this announcement with interested colleagues and students. The Organizers

1 0

**EXTERN** Fwd: Fwd: [BridgeQG COST Action] Last Call for QIQG2025 at Perimeter Institute
by Enno Giese 14 Mai '25

14 Mai '25

FYI -------- Weitergeleitete Nachricht -------- Betreff: Fwd: [BridgeQG COST Action] Last Call for QIQG2025 at Perimeter Institute Datum: Wed, 14 May 2025 13:45:15 +0200 Von: Giulia Gubitosi <giulia.gubitosi(a)unina.it> An: Giulia Gubitosi <giulia.gubitosi(a)gmail.com> Kopie (CC): ciambelli.luca(a)gmail.com Dear BridgeQG members, Please find below the announcement for a conference that might be of interest for some of you. Best regards, Giulia Gubitosi Chair of COST Action BridgeQG PS. Please feel free to advertise this COST Action to colleagues who might be interested in joining. Application for membership can be done through the website https://www.cost.eu/actions/CA23130/. -- Dr.Giulia Gubitosi Dipartimento di Fisica "E. Pancini" Universita' di Napoli Federico II, INFN Sez. di Napoli Complesso Universitario di Monte S. Angelo Via Cinthia - 80126 Napoli Italy Email: giulia.gubitosi(a)unina.it giulia.gubitosi(a)na.infn.it > > > Dear colleagues, > > Registration for *QIQG2025* at Perimeter Institute will be closing soon! > > This conference will bring together leading experts to discuss the > latest developments in quantum information, quantum gravity, and their > interplay. > > You can find all the details (including the list of speakers) and > register here: > events.perimeterinstitute.ca/e/qiqg2025 > <https://events.perimeterinstitute.ca/e/qiqg2025> > > Attached, you’ll find the conference poster—please feel free to share > it with anyone who might be interested, and to advertise it in your > institutions. > > Looking forward to seeing many of you here. > > Best wishes, > > The organizers: Luca Ciambelli, Rob Myers, Chris Waddell, Beni Yoshida > >

1 0

Fwd: Invitation/reminder to talk from Juan Torres (ICFO)
by Enno Giese 14 Mai '25

14 Mai '25

FYI -------- Weitergeleitete Nachricht -------- Betreff: Invitation/reminder to talk from Juan Torres (ICFO) Datum: Tue, 13 May 2025 21:47:27 +0200 Von: Gräfe, Markus <markus.graefe(a)tu-darmstadt.de> An: Giese, Enno <enno.giese(a)tu-darmstadt.de>, Reinhold Walser <reinhold.walser(a)physik.tu-darmstadt.de>, Gerhard Birkl <gerhard.birkl(a)physik.tu-darmstadt.de>, Thomas Halfmann <thomas.halfmann(a)physik.tu-darmstadt.de>, Reinhold Walser <reinhold.walser(a)physik.tu-darmstadt.de>, Bagnoud, Vincent <vincent.bagnoud(a)tu-darmstadt.de>, Kuschel, Stephan <stephan.kuschel(a)tu-darmstadt.de>, Merian, Andreas <andreas.merian(a)biophotonics.tu-darmstadt.de>, Frosch, Torsten <torsten.frosch(a)biophotonics.tu-darmstadt.de>, Bernhard Urbaszek <bernhard.urbaszek(a)pkm.tu-darmstadt.de>, Norbert Pietralla <pietralla(a)ikp.tu-darmstadt.de>, Robert Roth <robert.roth(a)physik.tu-darmstadt.de>, Preu, Sascha <sascha.preu(a)tu-darmstadt.de> Dear all, I am pleased to cordially invite you to a talk by Juan Torres from ICFO, Barcelona. Please find the title and abstract attached. The talk will take place on *May 15th at 15:30 in seminar rooms 4 and 23 in L6|01 (Lichtwiese). *I will be happy to see you there. Please share this invitation in your groups so that interested people can join. Thank you very much. Best, Markus -- Prof. Dr. Markus Gräfe Experimental Solid State Quantum Optics Institute for Applied Physics Technical University of Darmstadt Otto-Berndt-Straße 3 64287 Darmstadt Germany +49 6151 16-20451 markus.graefe(a)tu-darmstadt.de <mailto:markus.graefe@tu-darmstadt.de> https://www.iap.tu-darmstadt.de/efq <https://www.iap.tu-darmstadt.de/efq>

1 0

Physikalisches Kolloquium 23.05.25_Precision spectroscopy of the simplest molecule: a novel approach to fundamental physics topics_Prof. Ph.D. Stephan Schiller
by kraeckmann 12 Mai '25

12 Mai '25

Sehr geehrte Damen und Herren, hiermit möchten wir das Physikalische Kolloquium am Freitag, 23.05.2025 um 14:00 Uhr mit, Prof. Ph.D. Stephan Schiller, Heinrich-Heine-Universität Düsseldorf, ankündigen. Titel: Precision spectroscopy of the simplest molecule: a novel approach to fundamental physics topics Wir bitten um Weiterleitung und Aushang und hoffen auf rege Teilnahme. Ort: ZKS-Uhrturmhörsaal, S2|08, Raum 171, Hochschulstraße 4, 64289 Darmstadt ------------ Ladies and gentlemen, We are pleased to announce the lecture of Prof. Ph.D. Stephan Schiller, Heinrich-Heine-Universität Düsseldorf, at the “Physikalisches Kolloquium” on Friday, 23.05.2025 at 2 pm. Title: Precision spectroscopy of the simplest molecule: a novel approach to fundamental physics topics Please forward and post this invitation. We look forward to a high attendance. Venue: ZKS-Uhrturmhörsaal, S2|08, Raum 171, Hochschulstraße 4, 64289 Darmstadt ------------ Beste Grüße / Best regards Martine Kräckmann -- Martine Kräckmann [sie/ihr; she/her] Sekretariat Prof. Dr. Barbara Drossel Prof. PhD Marco Durante Prof. Dr. Bernhard Urbaszek Technische Universität Darmstadt Institut für Physik Kondensierter Materie FB 5 Physik - S2|07 16 Hochschulstraße 6 64289 Darmstadt Tel.: 06151 16-21324 Fax: 06151 16-21322 http://www.ipkm.tu-darmstadt.de

2 1

Fwd: Colloquium by Nathan Lundblad at LUH 22.May 2025; 16- 17:30 pm
by Enno Giese 12 Mai '25

12 Mai '25

FYI, ein CAL Vortrag -------- Weitergeleitete Nachricht -------- Betreff: Colloquium by Nathan Lundblad at LUH 22.May 2025; 16- 17:30 pm Datum: Mon, 12 May 2025 11:49:56 +0200 Von: Anke Schmidt <anke.schmidt(a)DQ-MAT.UNI-HANNOVER.DE> Antwort an: Anke Schmidt <anke.schmidt(a)DQ-MAT.UNI-HANNOVER.DE> An: MEMBERS-DQMAT(a)LISTSERV.UNI-HANNOVER.DE Dear DQ-mat members and interested scientists, We are are pleased to announce the next Colloquium which will take place on *_Thursday, 22.May 2025_*_- *16:00 - 17:30 pm* __LUH__, Building 1101, Room D326, Welfengarten 1, 30167 Hannover _ Colloquiumby *Nathan Lundblad - *Bates College, Maine, United States of America Title: Ultracold Bubbles in Space: Atomic Physics Aboard the International Space Station Abstract: Exploring the effects of geometry, topology, dimensionality, and interactions on ultracold atomic ensembles has been a continually fruitful line of inquiry in the decades since the first observation of Bose-Einstein condensation (BEC). One previously unexplored configuration for ultracold ensembles is that of a bubble or shell, where trapped atoms are confined in the vicinity of a spherical or ellipsoidal surface. Such a quantum system could offer new collective modes, topologically-sensitive behavior of quantized vortices, self-interference and shell collapse, as well as the exploration of trapped ultracold systems with mm-scale spatial extent. While techniques for the generation of bubble-shaped traps have been known since 2001, terrestrial gravity has thus far limited the convenient observation of ultracold bubbles. With the construction of the NASA Cold Atom Lab (CAL) facility and its subsequent delivery in 2018 to the International Space Station (ISS) and commissioning as an orbital BEC user facility, experimental atomic physics schemes that require a sustained microgravity environment are now possible. I will review CAL observations of trapped bubbles of ultracold atoms, including a variety of bubble-trap configurations that are possible with this apparatus. I will also discuss the thermodynamics of ultracold bubbles and review open questions being explored in the ongoing second science run of CAL aboard ISS, which feature improved bubble aspect ratios and filling as well as improved imaging; I will also review upcoming changes to the CAL facility, recent progress made with shell structures in terrestrial laboratories, and the bubble-making potential of the Einstein Elevator. Access data for the transfer: Zoom Access:**https://us04web.zoom.us/j/932734874 This talk is part of the "Virtual Seminar on Precision Physics and Fundamental Symmetries" series and of the SFB DQ-mat colloquium series:https://indico.cern.ch/category/12183/ Best regard, Anke Schmidt -- Leibniz Universität Hannover DQ-Mat-Office, Room 308 Callinstraße 36 30167 Hannover Tel: +49 511 76214887 Fax: +49 511 76217243 Email:anke.schmidt@dq-mat.uni-hannover.de https://www.dq-mat.uni-hannover.de/ https://www.quest-lfs.uni-hannover.de/ https://www.hitec.uni-hannover.de/ https://www.quantumfrontiers.uni-hannover.de/ https://www.qvls.de

1 0

Fwd: Block Lecture by Michaele Fleischhauer at LUH, 22./23. May 2025, 10:15 -11:45 am
by Enno Giese 12 Mai '25

12 Mai '25

FYI -------- Weitergeleitete Nachricht -------- Betreff: Block Lecture by Michaele Fleischhauer at LUH, 22./23. May 2025, 10:15 -11:45 am Datum: Mon, 12 May 2025 11:40:17 +0200 Von: Anke Schmidt <anke.schmidt(a)DQ-MAT.UNI-HANNOVER.DE> Antwort an: Anke Schmidt <anke.schmidt(a)DQ-MAT.UNI-HANNOVER.DE> An: MEMBERS-DQMAT(a)LISTSERV.UNI-HANNOVER.DE Dear DQ-mat members and interested scientists, We are are pleased to announce the next Block Lecture which will take place on *_Thursday, 22.May 2025_*_- 10:15- 11.45 am - Part I __LUH__, Building 1101, Room D326, Welfengarten 1, 30167 Hannover _ **_Friday, 23 May 2025_**_- 10:15 - 11:45 am - Part II _ _LUH, Room 0001, Building 3430, LNQE Building, Schneiderberg 39, 30167 Hannover_ Block Lectureby *Michael Fleischhauer - *University of Kaiserslautern, Germany Title: *Topology in open many-body systems* Abstract: Topological states of matter have fascinated physicists since a long time. The notion of topology is however ususally associated with ground states of (many-body)-Hamiltonians, which are pure. So what is left of it at finite temperatures and can topological protection be extended to non-equilibrium steady states (NESS) of open systems? Can suitable observables be constructed that preserve the integrity of topological invariants for mixed states and what are measurable consequences of their existence? Can we classify the topology of finite-temperature and NESS using generalized symmetries? Access data for the transfer: Zoom Access:**https://us04web.zoom.us/j/932734874 Best regard, Anke Schmidt -- Leibniz Universität Hannover DQ-Mat-Office, Room 308 Callinstraße 36 30167 Hannover Tel: +49 511 76214887 Fax: +49 511 76217243 Email:anke.schmidt@dq-mat.uni-hannover.de https://www.dq-mat.uni-hannover.de/ https://www.quest-lfs.uni-hannover.de/ https://www.hitec.uni-hannover.de/ https://www.quantumfrontiers.uni-hannover.de/ https://www.qvls.de

1 0