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Starting Tuesday, 17.10.2023, 10:15

Within the seminar, students give talks on current topics in condensed matter physics. The seminar aims to give a closer look at new developments in condensed matter physics and to show how these developments can be transferred into applications. The seminar focuses on spin electronicsspin dynamics, solid-state quantum information processing, the physics of solid-state nanostructures, and high temperature superconductivity. These topics are in the focus of several research projects of WMI and collaborative research programs in the Munich area (e.g. the Excellence Cluster "Munich Center for Quantum Science and Technology (MCQST)", the Munich Quantum Valley e.V., as well as several BMBF and EU projects).

The seminar is relevant for the special courses on Quantum Science and Technology, Superconductivity and Low Temperature Physics as well as on Magnetism and Spintronics. It is suitable for bachelor students in the 5th semester or higher and for master students.

Schedule

17.10.2023 Preliminary discussion and assignment of topics
(R. Gross, N.N.)
24.10.2023 Preliminary discussion and assignment of topics
(R. Gross, N.N.)
   
28.11.2023 Otto Graf (Technical University of Munich)
Loophole-free Bell inequality violation with superconducting circuits (S. Storz et al., Nature 617, 265-270 (2023))
(Advisor: Rudolf Gross)
19.12.2023 Alexander Dolpp (Technical University of Munich)
Single-electron spin resonance detection by microwave photon counting (Z. Wang et al., Nature 619, 276–281 (2023))
(Advisor: Nadezhda Kukharchyk)

 

List of open topics for seminar talks in WS 2023/2024:

  1. Room-temperature quantum optomechanics using an ultralow noise cavity (G. Huang et al., Nature 626 512-517 (2024))

  2. Quantum spin nematic phase in a square-lattice iridate (Hoon Kim et al., Nature 625 264-269 (2024))

  3. Evidence for chiral supercurrent in quantum Hall Josephson junctions (H. Vignaud et al., Nature 624 545-550 (2023))

  4. Spinon Heat Transport in the Three-Dimensional Quantum Magnet PbCuTe2O6 (Xiaochen Hong et al., Phys. Rev. Lett. 131, 256701 (2023))

  5. Exploring large-scale entanglement in quantum simulation (M.K. Joshi et al., Nature 624 539-544 (2023))

  6. A quantum electromechanical interface for long-lived phonons (A. Bozkurt et al., Nature Physics 19 1326-1332 (2023))

  7. Quantum advantage in microwave quantum radar (R. Assouly et al., Nature Physics 19, 1418-1422 (2023))

  8. Microwave Fluorescence Detection of Spin Echoes (E. Billaud et al., Phys. Rev. Lett. 131, 100804 (2023))

  9. Chiral phonons in quartz probed by X-rays (H. Ueda et al., Nature 618, 946-950 (2023))

  10. Fluctuation-enhanced phonon magnetic moments in a polar antiferromagnet (F. Wu et al., Nature Physics (2023))

  11. Time-domain observation of ballistic orbital-angular-momentum currents with giant relaxation length in tungsten (T.S. Seifert et al., Nature Nanotechnology (2023))

  12. Observation of Spin-Wave Moiré Edge and Cavity Modes in Twisted Magnetic Lattices (Hanchen Wang et al., Phys. Rev. X 13, 021016 (2023))

  13. Proximity superconductivity in atom-by-atom crafted quantum dots (L. Schneider et al., Nature 621, 60-65 (2023))

  14. Indistinguishable telecom band photons from a single Er ion in the solid state (S. Ourari et al., Nature 620, 977-981 (2023))

  15. no longer available: Single-electron spin resonance detection by microwave photon counting (Z. Wang et al., Nature 619, 276–281 (2023))

  16. Room-temperature magnetoresistance in an all-antiferromagnetic tunnel junction (Peixin Qin et al., Nature 613, 485 (2023))

  17. Quantum oscillations of the quasiparticle lifetime in a metal (N. Huber et al., Nature 621, 276 (2023))

  18. Observation of the orbital Hall effect in a light metal Ti (Young-Gwan Choi et al., Nature 619, 52–56 (2023))

  19. Millisecond Coherence in a Superconducting Qubit (Aaron Somoroff et al., Phys. Rev. Lett. 130, 267001 (2023))

  20. no longer available: Loophole-free Bell inequality violation with superconducting circuits (S. Storz et al., Nature 617, 265-270 (2023))

  21. Beating the break-even point with a discrete-variable-encoded logical qubit (Zhongchu Ni et al., Nature 616, 56-60 (2023))

  22. Macroscopic Quantum Test with Bulk Acoustic Wave Resonators (Björn Schrinski et al., Phys. Rev. Lett. 130, 133604 (2023))

  23. On-demand directional microwave photon emission using waveguide quantum electrodynamics (Bharath Kannan et al., Nature Physics 19, 394 (2023))

  24. Nonlinear multi-frequency phonon lasers with active levitated optomechanics (Tengfang Kuang et al., Nature Physics 19, 414 (2023))

  25. Giant spin polarization and a pair of antiparallel spins in a chiral superconductor (R. Nakajima et al., Nature 613, 479 (2023))

Part of Module Advances in Solid State Physics for B.Sc. Students
Lecture notes
Slides Tuesday Seminar 2023-11-28 Graf
download protected by password (see below)
Slides Tuesday Seminar 2023-12-21 Dolpp
download protected by password (see below)
Lecture
W 2023
Starting Wednesday, 18.10.2023, 14:15
Part of Module Applied Superconductivity 1: from Josephson Effects to RSFQ Logic
Colloquium
W 2023
Starting Thursday, 19.10.2023, 17:00

Within the Colloquium on Solid State Physics international experts present talks on recent important developments in the fields of solid state physics and solid-state-based quantum systems.

For the announcement of talks, see: https://www.wmi.badw.de/teaching/colloquium-on-solid-state-physics

Part of Module Colloquium on Solid State Physics
Excercise
W 2023
Starting Wednesday, 18.10.2023, 16:00
Part of Module Applied Superconductivity 1: from Josephson Effects to RSFQ Logic
Excercise
W 2023
Starting Tuesday, 17.10.2023, 15:45
Part of Module Magnetism
Excercise
W 2023
Starting Monday, 16.10.2023, 14:00
Part of Module QST Experiment: Quantum Hardware
Excercise
W 2023
Starting Thursday, 26.10.2023, 14:00
Part of Module Superconductivity and Low Temperature Physics 1
Excercise
W 2023
Starting Tuesday, 17.10.2023, 16:30
Part of Module Theory of Open Quantum Systems
Seminar
W 2023
Starting Wednesday, 18.10.2023, 09:00
Part of Module Journal Club on Quantum Systems
0000000387
Lecture
W 2023
Starting Tuesday, 17.10.2023, 14:00
Part of Module Magnetism
Part of Module Novel Topics in Magnetism: quantum hybrid systems, spin dynamics, and angular momentum transport
Lecture
W 2023
Starting Thursday, 19.10.2023, 16:00
Part of Module QST Experiment: Quantum Hardware
Starting Tuesday, 17.10.2023, 12:00

Content

Within the seminar Superconducting Quantum Circuits, students present state-of-the-art developments in modern quantum technology with superconducting quantum circuits. In this field, funamental research in academia has meanwhile triggered highly dynamical activities from established large corporations (Google, IBM, Intel etc.) and ambitious startups (Rigetti, IQM, HQS etc.). In particular, superconducting quantum circuits belong to the few prime candidates for a scalable quantum computer.

Time/Place

12:00 - 14:00h, WMI-Seminarroom, room 143

Schedule

17.10.2023 Preliminary discussion and assignment of topics (M. Werninghaus et al.)
24.10.2023 Preliminary discussion and assignment of topics (M. Werninghaus et al.)
28.11.2023 Building Blocks of a Flip-Chip Integrated Superconducting Quantum Processor (Agatha Skoczylas)
12.12.2023 Mechanically Induced Correlated Errors on Superconducting Qubits with Relaxation Times Exceeding 0.4 Milliseconds (Apollon Marangos)
09.01.2024 Real-time quantum error correction beyond break-even (Ludwig Martlmueller) 
16.01.2024 CANCELLED: Dissipative stabilization of dark quantum dimers via squeezed vacuum (Juan Soriano) 
23.01.2024 Control and readout of a superconducting qubit using a photonic link (Darius Haitsch)


List of open topics for seminar talks in WS 2023/2024:

  1. High-fidelity parallel entangling gates on a neutral-atom quantum computer (Simon J. Evered et al., Nature 622, 268-272 (2023))
  2. Control and readout of a superconducting qubit using a photonic link (F. Lecocq, F. Quinlan, K. Cicak, J. Aumentado, S. A. Diddams & J. D. Teufel, Nature 591, 575-579 (2021))
  3. Quantum-enabled operation of a microwave-optical interface (Rishabh Sahu, William Hease, Alfredo Rueda, Georg Arnold, Liu Qiu & Johannes M. Fink, Nature Communications 13, 1276 (2022))
  4. Autonomous error correction of a single logical qubit using two transmons (Ziqian Li, Tanay Roy, David Rodriguez Perez, Kan-Heng Lee, Eliot Kapit and David I. Schuster, arXiv:2302.06707v1 [quant-ph] (2023))
  5. A dissipatively stabilized Mott insulator of photons (Ruichao Ma, Brendan Saxberg, Clai Owens, Nelson Leung, Yao Lu, Jonathan Simon & David I. Schuster, Nature 566, 51–57 (2019))
  6. Real-time quantum error correction beyond break-even (V. V. Sivak, A. Eickbusch, B. Royer, S. Singh, I. Tsioutsios, S. Ganjam, A. Miano, B. L. Brock, A. Z. Ding, L. Frunzio, S. M. Girvin, R. J. Schoelkopf & M. H. Devoret, Nature 616, 50–55 (2023))
  7. Three-wave mixing traveling-wave parametric amplifier with periodic variation of the circuit parameters (Anita Fadavi Roudsari, Daryoush Shiri, Hampus Renberg Nilsson, Giovanna Tancredi, Amr Osman, Ida-Maria Svensson, Marina Kudra, Marcus Rommel, Jonas Bylander, Vitaly Shumeiko, Per Delsing, Appl. Phys. Lett. 122, 052601 (2023))
  8. Mechanically Induced Correlated Errors on Superconducting Qubits with Relaxation Times Exceeding 0.4 Milliseconds (Shingo Kono, Jiahe Pan, Mahdi Chegnizadeh, Xuxin Wang, Amir Youssefi, Marco Scigliuzzo, Tobias J. Kippenberg, arXiv:2305.02591 [quant-ph] (2023))
  9. Efficient Long-Range Entanglement using Dynamic Circuits (Elisa Bäumer, Vinay Tripathi, Derek S. Wang, Patrick Rall, Edward H. Chen, Swarnadeep Majumder, Alireza Seif, Zlatko K. Minev, arXiv:2308.13065 [quant-ph] (2023))
  10. Tunable inductive coupler for high fidelity gates between fluxonium qubits (Helin Zhang, Chunyang Ding, D. K. Weiss, Ziwen Huang, Yuwei Ma, Charles Guinn, Sara Sussman, Sai Pavan Chitta, Danyang Chen, Andrew A. Houck, Jens Koch, David I. Schuster, arXiv:2309.05720 [quant-ph] (2023))

Topical directions of the seminar:

  • Foundations and applications of superconducting quantum circuits in quantum computing, quantum simulation, quantum communication, quantum sensing, and quantum metrology.
  • Superconducting quantum technology: Resonators, waveguides, quantum bits, couplers, quantum-limited amplifiers, quantum processors, quantum error correction etc.
  • State-of-the-art fabrication and measurement tachniques for superconducting quantum circuits.
  • Investigation of the fundamental light-matter interaction "on a chip" using superconducting quantum circuits.
  • Quantum information theoretical concepts: Entanglement, quantum gates, quantum algorithms, quantum memories, quantum measurements etc.
  • The coupling of nanomechanical systems and spin ensembles to superconducting circuits.
  • Challenges: longer quantum coherence, higher gate fidelities, scalability to a large number of qubits etc.
  • Latest developments on the strive towards quantum advantages over conventional technology
  • Propagating quantum microwaves emitted by superconducting circuits: quantum ressources, quantum microwave communication, quantum radar

You will be supported in the preparation of your talks from the research groups on superconducting quantum circuits, propagating quantum microwaves, and nanomechanics at the Walther-Meißner-Institute.

Learning Outcome:

After the successful completion of the module the students are able

  • To prepare presentation slides on a scientific topic and to clearly present a topical research field within a scientific talk.
  • To discuss on a state-of-the-art research field in a scientific way.
  • To analyze and assess the latest development in quantum scinece and technology with superconducting circuits.
  • To understand and explain the foundations of superconducting quantum systems and technology.
  • To understand the foundations and the state of the art in quantum computing, quantum simulation, quantum communication, quantum sensing, and quantum metrology with supercondcuting circuits
  • To understand the foundations and the state of the art in nanomechnical systems and spin ensembles

Preconditions:

Basic knowledge of condensed matter physics, foundations of quantum mechanics

Part of Module Superconducting Quantum Circuits
Lecture notes
Lecture
W 2023
Starting Thursday, 19.10.2023, 12:00

The content of the lecture includes the following topics:

  • Basics properties of superconductors and superconducting materials (different types of superconducting materials, superconductors in a magnetic field, type-I and type-II superconductors, thermodynamic properties)
  • Phenomenological description of superconductivity (London theory, superconductivity as a macroscopic quantum phenomenon, Ginzburg-Landau theory)
  • Fluxoid quantization, Josephson effects
  • Overview of microscopic BCS theory
  • Critical currents
  • Applications of superconductivity
  • Unconventional superconductors (e.g. cuprates, iron-pnictides)
Part of Module Superconductivity and Low Temperature Physics 1
Lecture
W 2023
Starting Monday, 16.10.2023, 14:00
Part of Module Theory of Open Quantum Systems

Within the Walther-Meißner-Seminar national and international experts present talks on current research related to the research topics of the Walther-Meißner-Institute such as quantum information systems, superconducting qubits and quantum circuits, magnetism & spintronics, quantum microwave communication and sensing or the fabrication technology for superconducting and magnetic devices.

For the announcement of talks, see: https://www.wmi.badw.de/teaching/walther-meissner-seminar

Part of Module Walther-Meißner-Seminar on Topical Problems of Low Temperature Physics
Seminar
W 2023
Starting Thursday, 19.10.2023, 10:00
Part of Module Quantum Optics Theory Seminar

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