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
308 2019-07-08 14:00  E6, #1322  Ultrabroadband squeezed pulses and their relation to relativity file
307 2019-07-10 16:00  Academic Cltural Complex (E9) 5층 스카이라운지  Public Lectures file
306 2019-07-16 16:00  Rm. 1323 (E6-2)  2019 Physics Distinguished Lecture file
305 2019-07-21 12:00  E6-2,# 5318  Challenges and Opportunities in Theoretical Particle Physics 2019 file
304 2019-07-25 16:00  E6-2, #1323  Band topology of twisted bilayer graphene file
303 2019-07-30 16:00  #1323, E6-2  Dirac fermions and flat bands in correlated kagome metals file
302 2019-07-31 16:00  E6-2, #1323  Features of ballistic superconducting graphene file
301 2019-08-01 14:00  E6 Room(#1323)  Low-density Superconductivity in SrTiO3 Probed by Planar Tunneling Spectroscopy file
300 2019-08-06 16:00  E6 Room(#1323)  Visualization of in-plane piezoresponse vector fields file
299 2019-08-14 16:00  Rm. 1323, E6  Quantum Optics, at the heart of quantum metrology and quantum information file
298 2019-08-16 14:00  E6 Room(#1323)  Multiferroic and Magnetoelectric Effects by Tailoring Interfacial Chemistry and Physics in Correlated Oxides file
297 2019-08-19 10:00  Rm. 1322, E6-2  Tutorials on Multimode Quantum Optics in the Continuous Variable Regime file
296 2019-08-22 16:00  #1323, E6-2  Physics and Applications in Nanoelectronics and Nonomechanics file
295 2019-08-27 16:00  Rm. 1323, E6  Critical current properties of Fe-based superconductors file
294 2019-09-02 16:00  Seminar Room 1501  Fall 2019: Physics Colloquium file
293 2019-09-10 15:00  E6-2. 1st fl. #1323  Two-Stage Kondo Effect file
292 2019-09-10 15:00  #2502, E6-2  (2+1) D Duality Web from 3D Euclidean Lattice file
291 2019-09-18 16:00  Seminar Room #1323  Fall 2019: Physics Seminar Serises file
290 2019-09-18 16:00  #1323, E6-2  Exploring Synthetic Quantum Matter in Superconducting Circuits file
289 2019-09-26 16:00  #1323, E6-2  Entanglement Swapping with Autonomous Polarization-Entangled Photon-Pairs from Warm Atomic Ensemble file