visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2016-06-16 16:00 
연사  
장소 #1323(E6-2, 1st fl.) 

“Quantum information processing using quantum dots and photonic crystal cavities”

 

Jun. 16 (Thu) 4PM, #1323(E6-2, 1st fl.)
Hyochul Kim, Samsung Advanced Institute of Technology

 

The ability to interface light with solid-state quantum bits (qubits) is essential for future development of scalable and compact quantum information systems that operate on ultra-fast timescales. Photons act as ideal carriers of quantum information and can serve as an efficient quantum link between matter qubits. Quantum dots (QDs) provide a promising implementation of a matter qubit, which can store quantum information in both excitonic states and highly stable spin states, providing an atom-like system in a semiconductor platform. By coupling these QDs to optical nano-cavities it becomes possible to achieve the strong coupling regime where a QD can modify the cavity spectral response, providing an efficient light-matter interface.
In this talk, I will explain that the qubit state of a photon can be controlled by a single solid-state qubit composed of a QD strongly coupled to a photonic crystal cavity.  The QD acts as a coherently controllable qubit system that conditionally flips the polarization of a photon reflected from the cavity on picosecond timescales, which implements a controlled NOT logic gate between the QD and the incident photon. Furthermore, the spin of a single electron or hole trapped in a charged QD can be used as a solid-state qubit with long coherence time. I will discuss our recent experimental realization of a quantum phase switch using a solid-state spin confined in a QD strongly coupled to a photonic crystal cavity, where the switch applies a spin-dependent phase shift on a photon.


Contact: Yoonsoo Kim (T.2599)

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)
405 2023-08-24 11:00    Advancing magnonic metamaterials: spin waves in nanomagnetic arrays
404 2024-05-28 10:00    Mixed-State Quantum Spin Liquids and Dynamical Anyon Condensations in Kitaev Lindbladians
403 2019-11-28 16:00    Generation of coherent EUV emissions using ultrashort laser pulses file
402 2022-05-20 11:00    (응집물리 세미나) Exploration of new polymorphs in van der Waals crystals
401 2019-05-09 16:00    Quantum Optical Sensing Using Single Photons And Single Photon Emission from Single Emitters file
400 2019-05-09 16:00    Quantum Optical Sensing Using Single Photons And Single Photon Emission from Single Emitters file
399 2020-02-12 13:00    From inflation to new weak-scale file
398 2025-05-22 14:30  Prof. Keun Su Kim (The Univ. of Yonsei)  Sublattice-interference model for Fermi arcs in cuprates file
397 2018-10-24 10:30    Photonic integration of next-generation clocks and Hertz-absolute-accuarcy optical frequenncy synthesizers file
396 2018-06-14 10:00    Phonons and polariton-like particles in trapped ions for quantum computation and quantum simulation file
395 2018-12-16 16:00    Lectures on 2d Conformal Field Theory file
394 2023-11-22 16:00    [High Energy Theory Seminar] Renormalization and the Hierarchy Problem
393 2024-08-22 16:00    [CAPP seminar] Development of a 12-20 GHz CO Intensity Mapping Receiver for Capturing the Star-formation History in the Early Universe file
392 2022-12-20 16:00    Getting into Biology and Medicine as Physicist
391 2019-03-26 15:00    Consideration of thermal Hall effect in frustrated and un-frustrated quantum magnets file
390 2022-06-03 09:30    (Quantum-&Nano-Photonics Webinar) Seeing glass in a new light: reimagine chalcogenide photonics file
389 2018-10-11 16:00    Dirac electrons in a graphene quasicrystal file
388 2019-10-29 14:30    Quantum sensing file
387 2025-05-02 11:00  Prof. Joonho Jang  Anderson localization of electrons in a moire-of-moire lattice of helical twisted trilayer graphene file
386 2019-05-02 16:00    Anomalous optical properties of halide perovskites file