Title:
量子光学システム
Document Type and Number:
Japanese Patent JP6479067
Kind Code:
B2
Abstract:
An optical system comprising a charged quantum dot having, a charged carrier, first and second ground state levels and a plurality of excited state levels, the first and second ground state energy levels having different spin states such that the charged carrier cannot transfer between the first and second ground state energy levels without changing its spin state, the system also comprising a controller adapted to control a first radiating beam with energy not more than 100 micro-eV from a first transition within said quantum dot from a first ground state level to a selected excited state level from the plurality of excited state levels, the system being adapted to enhance the decay rate of a second transition within said quantum dot from the selected excited state level to a second ground state level, but not a first transition, such that a photon is produced due to scattering of a photon from the first radiating beam, wherein the controller is adapted to irradiate the quantum dot with the first radiating beam for a time longer than the radiative lifetime of the selected excited state to produce just one photon, and wherein the first radiating beam comprises at least one pulse.
Inventors:
Anthony John Bennett
Andrew James Shields
Andrew James Shields
Application Number:
JP2017029795A
Publication Date:
March 06, 2019
Filing Date:
February 21, 2017
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
G02F1/35; G02F3/00
Domestic Patent References:
| JP5602238B2 |
Foreign References:
| WO2015193240A1 | ||||
| US20130256504 | ||||
| US20130107617 |
Other References:
BENNETT,Anthony J. et al.,Voltage tunability of single-spin states in a quantum dot,nature communications,英国,nature publishing group,2013年 2月26日,Vol.4,1522,pp.1-5
HE,Yu et al.,Indistinguishable Tunable Single Photons Emitted by Spin-Flip Raman Transitions in InGaAs Quantum Dots,PHYSICAL REVIEW LETTERS,米国,American Physical Society,2013年12月 6日,Vol.111,pp.237403-1-237403-5
BENNETT,Anthony J. et al.,Cavity-enhanced coherent light scattering from a quantum dot,Science Advances,米国,American Association for the Advancement of Science,2016年 4月22日,Vol.2,No.4,e1501256
PETER LODAHL,INTERFACING SINGLE PHOTONS AND SINGLE QUANTUM DOTS WITH PHOTONIC NANOSTRUCTURES,[ONLINE],2013年12月 4日,V87,P1-2,13-18,47-48,URL,http://dx.doi.org/10.1103/RevModPhys.87.347
HE,Yu et al.,Indistinguishable Tunable Single Photons Emitted by Spin-Flip Raman Transitions in InGaAs Quantum Dots,PHYSICAL REVIEW LETTERS,米国,American Physical Society,2013年12月 6日,Vol.111,pp.237403-1-237403-5
BENNETT,Anthony J. et al.,Cavity-enhanced coherent light scattering from a quantum dot,Science Advances,米国,American Association for the Advancement of Science,2016年 4月22日,Vol.2,No.4,e1501256
PETER LODAHL,INTERFACING SINGLE PHOTONS AND SINGLE QUANTUM DOTS WITH PHOTONIC NANOSTRUCTURES,[ONLINE],2013年12月 4日,V87,P1-2,13-18,47-48,URL,http://dx.doi.org/10.1103/RevModPhys.87.347
Attorney, Agent or Firm:
Kurata Masatoshi
Nobuhisa Nogawa
Takashi Mine
Naoki Kono
Tadashi Inoue
Ukai Ken
Nobuhisa Nogawa
Takashi Mine
Naoki Kono
Tadashi Inoue
Ukai Ken