visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2018-04-11 16:00 
연사  
장소 #1323 (E6-2, 1st fl.) 

Physics Seminar

 

Non-Gaussian states of multimode light generated via hybrid quantum information processing

 

Dr. Young-Sik Ra

Laboratoire Kastler Brossel, Paris, France

 

April 11 (Wed), 4:00pm

#1323 (E6-2, 1st fl.)

 

 

Abstract:

Optical quantum information processing can be classified into two categories depending on the way of encoding quantum information on light: one harnesses the particle nature (photon)−called discrete-variable approach−, and the other exploits the wave nature (electric field)−called continuous-variable approach. Basic nonclassical lights for the two are single photon and squeezed vacuum, respectively. Recently, a new field of study is emerging, called hybrid quantum information processing that combines the two conventional approaches to complement each other.

 

In this seminar, I will present generation of non-Gaussian quantum states of multimode light based on the hybrid quantum information processing. Squeezed vacuum, which is employed in the continuous-variable approach, is a Gaussian state, which can be described by moments up to the second order (i.e. variance). However, it has limitations on quantum computing and quantum communication, while single-photon subtraction used in the discrete-variable approach can provide non-Gaussian characteristics. We have implemented a single-photon subtractor compatible with multimode squeezed vacuum and generated non-Gaussian multimode quantum states. The novel quantum states of light will find applications in various quantum technologies such as distillation of entangled states, universal quantum computing, and quantum metrology.

 

Contact: Yongseop Kang, Administration Team (T.2599)

 

Department of Physics

번호 날짜 연사 제목
공지 2025-02-24 16:00    2025년 봄학기 콜로키움 안내
공지 2025-02-27 16:00    2025년 봄 물리학과 특별세미나 (광학/응집물리 분야)
354 2019-09-27 14:30    Spin-charge conversion in topological insulators for spintronic applications file
353 2019-09-27 16:00    0D/1D/2D/3D III-V materials grown by MBE for Optelectronics file
352 2019-10-15 16:00    Moiré superlattices and graphene quasicrystal file
351 2019-10-16 16:00    Emergent black holes and monopoles from quantum fields file
350 2019-10-17 16:00    Top down manipulation of Waves : From Metamaterials, Correlated Disorder, Quantum Analogy, to Digital Processing file
349 2019-10-25 15:00    Physics Seminar file
348 2019-10-29 10:00    Unconventional Spin Transport in Quantum Materials file
347 2019-10-29 14:30    Quantum sensing file
346 2019-10-29 16:00    Particles and Gravity via String Geometry file
345 2019-10-31 10:00    Kondo meets Hubbard: Impurity physics for correlated lattices file
344 2019-11-01 14:30    Squeezing the best out of 2D materials file
343 2019-11-01 16:00    Electron transport through weak-bonded contact metal with low dimensional nano-material file
342 2019-11-05 16:00    Study on nanomaterials by the development of ultrahigh resolution laser-photoelectron microscopy (PEEM) file
341 2019-11-07 16:00    Integrated quantum photonics with solid-state quantum emitters file
340 2019-11-14 16:00    Semi-classical model of polariton propagation file
339 2019-11-20 16:00    Correlation between superconducting transition temperature and critical current density in irradiated iron-based superconductors file
338 2019-11-28 16:00    Generation of coherent EUV emissions using ultrashort laser pulses file
337 2019-12-03 16:00    Toward Quantum Materials with Correlated Oxides file
336 2019-12-05 16:00    Subwavelenth Photonic Devices: From Single Photon Sources to Solar Cell file
335 2019-12-13 13:00    Computational Material Designs: Current Status and Future Directions file