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X-WR-CALNAME:QVLS | Quantum Valley Lower Saxony
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X-WR-CALDESC:Veranstaltungen für QVLS | Quantum Valley Lower Saxony
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BEGIN:VEVENT
DTSTART;VALUE=DATE:20250630
DTEND;VALUE=DATE:20250702
DTSTAMP:20260407T132640
CREATED:20241219T150533Z
LAST-MODIFIED:20250619T100818Z
UID:10002216-1751241600-1751414399@qvls.de
SUMMARY:Quantum Frontiers Days 2025
DESCRIPTION:Annual General Assembly of the Cluster of Excellence QuantumFrontiers with researchers from Hannover\, Braunschweig and Bremen and invited Speakers. The two days of intensive exchange with a two-day poster session are one of the central motors for cooperation in the research network. \nContact\nQF Office:\noffice@quantumfrontiers.uni-hannover.de.
URL:https://qvls.de/event/quantum-frontiers-days-2025/
CATEGORIES:Bildung,Forschung
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250703T160000
DTEND;TZID=Europe/Berlin:20250703T173000
DTSTAMP:20260407T132640
CREATED:20250703T124423Z
LAST-MODIFIED:20250703T124423Z
UID:10002264-1751558400-1751563800@qvls.de
SUMMARY:Realizing and investigating quantum-many body systems of trapped ions
DESCRIPTION:„As some of you may recall\, we initially wanted to have todays Jour Fixe as an in-person event. After the cancellation of our block lecture speaker and due to a scheduling conflict with the LUH Sommerfest\, we decided to move the in-person JF at PTB to the next semester.\nNevertheless\, we are pleased to announce….“ \nDQ-Mat is pleased to announce the next colloquium which will take place on\nThursday\, 03th July 2025 \,\nPTB\, Vieweg- Bau\, Room 133\n16:00-17:30 Colloquium by Christian Roos\, Universität Innsbruck \nAbstract:\nTrapped ions illuminated with laser light constitute an engineered quantum system that enables the realization of spin-lattice models with long-range interactions that are mediated by the collective ion motion. While linear ion strings of up to 50 ions have been used for this purpose for a long time\, experiments with two-dimensional ion crystals held in radiofrequency traps started only recently.\nI will present experiments demonstrating control over planar ion crystals with more than 100 ions [1]. After cooling all transverse motional modes of the crystal close to the ground state\, long-range transverse field Ising models can be realized by Raman interactions that off-resonantly couple the Zeeman ground states of singly-charged calcium ions to crystal’s motional modes. We demonstrate the creation of spin-squeezed states of up to 91 ions using an approach previously realized with long ion chains [2]\, characterize the spin-spin interactions and demonstrate single-qubit control over all ions in the crystal as well as entangling two-qubit gates.\nAn important question is to what degree the Hamiltonian one believes to generate is indeed realized in the experiment. To answer this question\, we have carried out Hamiltonian and Liouvillian learning of our system\, a procedure that opens a path to bounded-error quantum simulation.\n[1] D. Kiesenhofer\, H. Hainzer et al\, PRX Quantum 4\, 020317 (2023)\n[2] J. Franke et al.\, Nature 621\, 740 (2023) \nAccess data for the transfer:\nZoom Access: https://us04web.zoom.us/j/932734874
URL:https://qvls.de/event/realizing-and-investigating-quantum-many-body-systems-of-trapped-ions/
CATEGORIES:Bildung
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250703T180000
DTEND;TZID=Europe/Berlin:20250703T193000
DTSTAMP:20260407T132640
CREATED:20250703T123913Z
LAST-MODIFIED:20250703T123913Z
UID:10002263-1751565600-1751571000@qvls.de
SUMMARY:The working world for physicists outside of academia
DESCRIPTION:Heather Partner speaking at event series „Mit Physik in den Beruf“ [A career in physics]\nHeather Partner studied physics and mathematics in the US and the UK\, and she received her PhD from the University of New Mexico\, where she worked in the area of atomic clock technology.\nAfter that\, she came to Germany to work as a postdoctoral researcher\, first at PTB Braunschweig and then at HU Berlin.\nAfter leaving academia\, she spent several years as a journal editor at Nature Communications before joining TOPTICA Photonics AG\, where she now works as a project manager focused in the area of quantum technologies. \nStarting at 6 pm\, Heather Partner will talk about her career path. Afterwards\, you are kindly invited to ask your questions. \nRegistration is not required. The event will be in English. \nAddress: Leibniz Universität Hannover\nWelfengarten 1\, 30167 Hannover\nRoom F428 in the main building (Building number: 1101)\nhttps://standortfinder.uni-hannover.de/de/?search=F428
URL:https://qvls.de/event/the-working-world-for-physicists-outside-of-academia/
LOCATION:Leibniz Universität Hannover\, Hauptgebäude\, Welfengarten 1\, Hannover\, 30167\, Germany
CATEGORIES:Bildung
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250721T150000
DTEND;TZID=Europe/Berlin:20250721T173000
DTSTAMP:20260407T132640
CREATED:20250715T135440Z
LAST-MODIFIED:20250716T104436Z
UID:10002266-1753110000-1753119000@qvls.de
SUMMARY:Covert Communication: From Classical to Quantum
DESCRIPTION:Abstract:\nIn many communication scenarios\, it is not enough to protect the content of a message—sometimes\, the mere existence of a transmission must remain hidden. This is the realm of covert communication\, which ensures not only secrecy but also undetectability. While traditional methods like encryption secure message content\, covert techniques prevent adversaries from even realizing that communication is taking place.\nIn this talk\, Prof. Boulat Bash explores the fascinating evolution of covert communication from classical systems to the quantum realm. He will show that even though the Shannon capacity of a covert channel is zero\, surprisingly large amounts of data can still be transmitted covertly. He will also discuss how covert systems uniquely benefit from channel dynamics and how pre-shared quantum entanglement can enhance classical covert communication—while the covert transmission of quantum data (qubits) presents new challenges due to the very noise that enables concealment.\nThe presentation will focus on intuitive explanations of these results\, with an eye toward future research directions in this exciting and rapidly developing field. \nSpeaker Bio:\nProf. Boulat A. Bash is an Associate Professor in the Department of Electrical and Computer Engineering at the University of Arizona. He holds a B.A. in Economics from Dartmouth College and earned his M.S. and Ph.D. in Computer Science from the University of Massachusetts Amherst. Prior to his current role\, he was a Scientist in the Quantum Information Processing Group at Raytheon BBN Technologies.\nHis research spans quantum information processing\, communication security\, privacy\, signal processing\, and information theory. Prof. Bash has received numerous accolades\, including an Honorable Mention in the 2015 NSA Best Scientific Cybersecurity Paper Competition\, the Raytheon Space and Airborne Systems Excellence in Engineering and Technology Award\, and the prestigious NSF CAREER Award \nAll interested researchers\, students\, and colleagues are warmly invited to attend. \nLocation:\nInstitute for Communications Technology (IfN)\, Room 22.2\, Schleinitzstraße 22\, Braunschweig \nor via Zoom \nhttps://tum-conf.zoom-x.de/j/63632016037?pwd=WjJBczN2RSs5TnJJRThCYnEvaGhhZz09 \n60min Lecture\, 30min Discussion
URL:https://qvls.de/event/covert-communication-from-classical-to-quantum/
CATEGORIES:Bildung
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BEGIN:VEVENT
DTSTART;VALUE=DATE:20250728
DTEND;VALUE=DATE:20250802
DTSTAMP:20260407T132640
CREATED:20250522T143748Z
LAST-MODIFIED:20250729T144414Z
UID:10002252-1753660800-1754092799@qvls.de
SUMMARY:QuantumFrontiers International Research School Summer Lecture Week
DESCRIPTION:The Lecture Week covers themes including Quantum and Condensed Matter Physics\, Electrical Engineering and Signal Processing\, Fundamental and Applied Physics\, Space and Energy Sciences\, and Knowledge Transfer. \nDate: July 28 – August 1 2025 \nLocation and Accommodation: Strandhotel Weißer Berg (Kiefernweg 20 31535 Neustadt am Rübenberge) \nProgram: \nYou can view the preliminary program here: https://seafile.projekt.uni-hannover.de/d/cb2c0a76ac084937bccd/\nPlease note that the schedule is still subject to minor changes. \nCosts: \nParticipation for QF and TerraQ members is centrally covered by QF.\nHotel rooms will be centrally booked for all participants. \nRegistration: \nFurther details including registration info are available here:  https://wiki.projekt.uni-hannover.de/aei-lectureweeks/start/lectureweeks\nYou can also register directly via this link:  https://forms.gle/DY2PXVBQviEX8Uet9\nPlease register by June 27th\, and note that the number of participants is limited. \nThis is the 15th QuantumFrontiers Lecture Week\, a crystal anniversary reflecting steady and beautiful growth. \nLunch and dinner breaks may seem brief\, but as before\, lunches include informal discussions\, and dinners are followed by group activities\, with meals continuing throughout.
URL:https://qvls.de/event/quantumfrontiers-international-research-school-summer-lecture-week/
CATEGORIES:Bildung
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