visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2018-06-18 10:00 
일시 Jun. 18 (MON), 10:00 AM 
장소 E6-2. 2nd fl. #2502 
연사 Dr. Thibault VOGT 

Physics Seminar

 

 

Rydberg electromagnetically induced transparency and microwave-to-optical conversion using Rydberg atoms

 

 Dr. Thibault VOGT  

Centre for Quantum Technology, National University of Singapore

 

Jun. 18 (MON), 10:00 AM

E6-2. 2nd fl. #2502

 

The very large transition dipole moments of Rydberg atoms are responsible for strong long-range dipole-dipole interactions as well as very large couplings to external fields. Because of this property, Rydberg atoms have found direct applications for quantum sensing, quantum simulation, and non-linear optics at the few-photons level. I will describe a few examples realized in the Rydberg atom group at CQT.

In the first part of the talk, I will present our recent demonstration of coherent microwave-to-optical conversion via frequency mixing in Rydberg atoms [1]. In contrast to other physical systems being explored, our scheme requires no cavity and allows for free-space and broadband conversion due to the strong coupling of microwaves to Rydberg transitions. This result is promising for future quantum communication networks, as broadband interconversion of microwave and optical fields will be essential for connecting superconducting qubits and photonic qubits. I will discuss the recent strategies that we have developed for improving the efficiency of the conversion, which include the demonstration of three-photon electromagnetically induced transparency (EIT), and collinear frequency mixing [2,3].

In the second part, I will present our long-term goal of demonstrating spatially resolved imaging of Rydberg atoms, using Rydberg EIT in the presence of long-range dipole-dipole interactions. I will describe diverse characterizations of the effect of interactions on Rydberg electromagnetically induced transparency, and show that Lévy statistics describes well this many-body system [4,5].

[1] Han, J., Vogt, T., Gross, C., Jaksch, D., Kiffner, K., and Li, W. Coherent microwave-to-optical conversion via six-wave mixing in Rydberg atoms, Phys. Rev. Lett. 120, 093201 (2018)

[2] Vogt, T., Gross, C., Gallagher, T. F., and Li, W., Microwave-assisted Rydberg Electromagnetically induced transparency, arXiv:1802.00529, accepted for publication in Opt. Lett. (2018)

[3] Vogt, T., Gross, C., Han, J., and Li, W., Efficient microwave-to-optical conversion using Rydberg atoms, under preparation (2018)

[4] Han, J., Vogt, T., and Li, W., Spectral shift and dephasing of electromagnetically induced transparency in an interacting Rydberg gas, Phys. Rev. A 94, 043806 (2016)

[5] Vogt, T., Han, J., Thiery, A., and Li, W., Lévy statistics of interacting Rydberg gases, Phys. Rev. A 95, 053418 (2017)

 

Contact: EunJung Jo, Physics Dept., (jojo@kaist.ac.kr)

 

Department of Physics, KAIST

번호 날짜 장소 제목
442 2017-07-10 16:00  Jul. 10th (Mon), 4pm  “Intertwined Orders in a Heavy-fermion metal” file
441 2017-04-06 16:00  IBS CAPP seminar room, Creation Hall (3F), KAIST Munji Campus  For whom the Belle tolls
440 2020-10-16 14:30  https://kaist.zoom.us/j/89198078609  Nanoscale magnetic resonance detection towards nano MRI file
439 2020-10-16 16:00  https://kaist.zoom.us/j/89198078609  Hidden room-temperature ferroelectricity in CaTiO3 revealed by a metastable octahedral rotation pattern file
438 2020-10-09 09:00  https://kaist.zoom.us/j/85161896513?pwd=U3pwWFFZaWVRamxDZUR5REhNeVk0UT09  Quantum Many-Body Simulation file
437 2020-10-15 17:00  https://bit.ly/3ndIiJn  Time crystals, quasicrystals, and time crystal dynamics in the superfluid universe file
436 2016-05-13 13:30  E6. #1501(1st fl.)  Aperiodic crystals in low dimensions
435 2016-05-13 16:00  E6. #1501(1st fl.)  Graphene analogue in (111)- BaBiO3 bilayer heterostructures for topological electronics
434 2018-06-22 10:00  E6-6, Lecture Room 119 (1F)  Success in Research Career file
433 2023-06-23 11:00  E6-6, #119  Visualizing orbital quantum phenomena at room temperature
432 2023-11-15 16:00  E6-6, #119  Quantum hydrodynamic theory for plasmonics: from molecule-coupling to nonlinear optics
431 2020-02-13 16:30  E6-6, #119  Enhanced Light-Matter Interactions in Graphene with Noble Metal Plasmonic Structures file
430 2023-05-22 13:00  E6-6 119  Design & Development of Electrochemical Biosensors for the Detection of T2DM Biomarkers
429 2023-06-30 11:00  E6-6 #1501  The Dual Mode Quantum Computer file
428 2022-08-17 11:00  E6-6 #118호  Robust Hamiltonian Engineering of Large Quantum Systems (큰 양자시스템의 견고한 해밀토니안 엔지니어링)
427 2022-12-20 16:00  E6-2.1st fl. #1323 & zoom  Studying Baryonic Flow Across the Cosmic Scales Using Radio and Millimeter Wavelength Experiments
426 2016-04-08 16:00  E6-2. 5st fl. #1501  Spectroscopic studies of iron-based superconductors : what have we learned?
425 2019-05-03 11:00  E6-2. 2st fl. #2502  Exotic Magnetism file
424 2018-09-04 14:30  E6-2. 2st fl. #2502  Ultrafast time- and angle-resolved photoemission spectroscopy (tr-ARPES) with extreme ultraviolet laser pulses file
423 2018-11-23 15:00  E6-2. 2st fl. #2501  Entanglement string and Spin Liquid with Holographic duality file