visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2016-06-16 16:00 
일시 Jun. 16 (Thu) 4PM 
장소 #1323(E6-2, 1st fl.) 
연사 Hyochul Kim, Samsung Advanced Institute of Technology 

“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 장소 제목
531 2009-02-23 16:00  E6, 1501  Physics Colloquium : 2009 Spring file
530 2009-09-07 16:00  E6, 1501  Physics Colloquium : 2009 Fall file
529 2009-10-21 16:00  E6, 1501  Interdimensional Universality of Dynamic Interfaces
528 2010-02-08 16:00  E6, 1501  Physics Ciolloquium : 2010 Spring file
527 2010-02-14 16:00  E6, 1501  Physics Colloquium - 2011 Spring file
526 2010-09-06 16:00  E6, 1501  Physics Colloquium : 2010 Fall file
525 2011-05-16 16:00  E6, 1501  Photonics with surface plasmon polaritons
524 2011-09-03 16:00  E6, 1501  Physics Colloquium : 2011 Fall file
523 2012-02-13 16:00  E6, 1501  Physics Colloquium : 2012 Spring
522 2012-04-02 16:00  E6, 1501  A new route to ferroelectricity in magnetic spinels: a case of Co2MnO4
521 2013-03-11 16:00  E6, 1501  Physics Colloquium : 2013 Spring
520 2013-09-09 16:00  E6, 1501  Physics Colloquium : 2013 Fall
519 2014-03-10 16:00  E6, 1501  Physics Colloquium : 2014 Spring file
518 2014-05-28 17:00  KI Building, Matrix Hall  부품소재산업이 미래다
517 2014-12-22 14:00  E6, Rm1319  Dynamics of molecular motors: Power stroke vs Brownian ratchet file
516 2015-03-04 12:00  1323호, E6-2  Bioimaging and Biosensing Using Near-Infrared Fluorescence file
515 2015-03-09 16:00  E6, 1501  Physics Colloquium : 2015 Spring file
514 2015-03-13 14:00  Connect Room, KI Bldg.  The 15th Innovative Workshop on Soft/Bio Materials file
513 2015-06-03 12:00  Room 101, E11  The First Wednesday Multidisciplinary Forum file
512 2015-07-15 14:00  E6-2,1323  Electronic and optical properties of titanate-based oxide superlattices