公开(公告)号：US11070370B2

公开(公告)日：2021-07-20

申请号：US16314858

申请日：2017-12-20

Applicant: SOUTH CHINA NORMAL UNIVERSITY

Inventor： Banghong Guo ,  Min Hu ,  Panpan Zhang

IPC: H04B10/00 ,  H04L9/08 ,  H04J14/02 ,  H04J14/00

Abstract: A system includes an Alice transmitting terminal, a wavelength division multiplexing (WDM) unit and a plurality of Bob terminals for receiving a plurality of photons of different wavelengths; the Alice terminal is connected with the plurality of Bob terminals by the WDM unit; the Alice terminal includes a multi-wavelength laser generation device, an attenuator, a first polarization beam splitter, a first beam combiner, a phase modulator, a first polarization controller and a second polarization controller; the WDM unit includes a wavelength selection device; each Bob terminal includes a second polarization controller, a third polarization controller, a fourth polarization controller, a third polarization beam splitter, a fourth polarization beam splitter, a second beam combiner, a third beam combiner, a first photon detector, a second photon detector, a third photon detector and a fourth photon detector.

公开(公告)号：US20190312723A1

公开(公告)日：2019-10-10

申请号：US16314858

申请日：2017-12-20

Applicant: SOUTH CHINA NORMAL UNIVERSITY

Inventor： Banghong Guo ,  Min Hu ,  Panpan Zhang

IPC: H04L9/08 ,  H04J14/02

Abstract: A system includes an Alice transmitting terminal, a wavelength division multiplexing (WDM) unit and a plurality of Bob terminals for receiving a plurality of photons of different wavelengths; the Alice terminal is connected with the plurality of Bob terminals by the WDM unit; the Alice terminal includes a multi-wavelength laser generation device, an attenuator, a first polarization beam splitter, a first beam combiner, a phase modulator, a first polarization controller and a second polarization controller; the WDM unit includes a wavelength selection device; each Bob terminal includes a second polarization controller, a third polarization controller, a fourth polarization controller, a third polarization beam splitter, a fourth polarization beam splitter, a second beam combiner, a third beam combiner, a first photon detector, a second photon detector, a third photon detector and a fourth photon detector.