公开(公告)号：US20240072907A1

公开(公告)日：2024-02-29

申请号：US17896565

申请日：2022-08-26

Applicant: Cisco Technology, Inc.

Inventor： Bing Qi

IPC: H04B10/70 ,  H04B10/40

CPC classification number: H04B10/70 ,  H04B10/40

Abstract: A first endpoint in a Quantum Key Distribution (QKD) system determines an operating mode for a hybrid transceiver for communicating in an optical communication session with a second endpoint. The operating mode is selected from a group containing a classical reception mode, a classical transmission mode, a quantum transmission mode, and a quantum reception mode. The first endpoint configures an input to a homodyne detector of the hybrid transceiver based on the operating mode and operates the hybrid transceiver in the operating mode for at least a portion of the optical communication session.

公开(公告)号：US20240305665A1

公开(公告)日：2024-09-12

申请号：US18181238

申请日：2023-03-09

Applicant: Cisco Technology, Inc.

Inventor： Bing Qi

IPC: H04L9/40 ,  H04B10/075

CPC classification number: H04L63/1475 ,  H04B10/075

Abstract: An endpoint receives a photon signal jointly encoded in time and frequency as a time-frequency state, and separates the photon signal with a dispersive element to generate frequency components. The endpoint delays each corresponding frequency component by a corresponding time delay to separate out the frequency components in time before the endpoint recombines the frequency components to generate a frequency-separated signal. The endpoint measures the frequency-separated signal to determine the time-frequency state of the photon signal.

公开(公告)号：US20240291641A1

公开(公告)日：2024-08-29

申请号：US18175807

申请日：2023-02-28

Applicant: Cisco Technology, Inc.

Inventor： Stephen Magno DiAdamo ,  Alireza Shabani ,  Bing Qi ,  Reem M. Mandil

IPC: H04L9/08

CPC classification number: H04L9/0855 ,  H04L9/0858

Abstract: A network element in a quantum network receives a hybrid frame including a classical header and a quantum payload. The network element processes the classical header for a length of time and generates a new classical header. The network element drops a portion of the quantum payload based on the length of time spent processing the classical header and updates the hybrid frame to include the new classical header and the quantum payload without the dropped portion.

公开(公告)号：US12284210B2

公开(公告)日：2025-04-22

申请号：US18181238

申请日：2023-03-09

Applicant: Cisco Technology, Inc.

Inventor： Bing Qi

IPC: H04L9/40 ,  H04B10/075

Abstract: An endpoint receives a photon signal jointly encoded in time and frequency as a time-frequency state, and separates the photon signal with a dispersive element to generate frequency components. The endpoint delays each corresponding frequency component by a corresponding time delay to separate out the frequency components in time before the endpoint recombines the frequency components to generate a frequency-separated signal. The endpoint measures the frequency-separated signal to determine the time-frequency state of the photon signal.

公开(公告)号：US12219304B2

公开(公告)日：2025-02-04

申请号：US17975175

申请日：2022-10-27

Applicant: Cisco Technology, Inc.

Inventor： Alireza Shabani ,  Bing Qi ,  Stephen Magno DiAdamo ,  Glen W. Miller ,  Ramana Rao Venkata Renuka Kompella

IPC: H04B10/70 ,  H04Q11/00

Abstract: A network element receives a classical header for a quantum payload, and processes the classical header to determine a destination endpoint for the quantum payload. The network element generates a new classical header for the quantum payload based on the destination endpoint. The network element sends the new classical header to a next hop ahead of the quantum payload at a time based on a number of hops between the network element and the destination endpoint.

公开(公告)号：US20240147101A1

公开(公告)日：2024-05-02

申请号：US17975175

申请日：2022-10-27

Applicant: Cisco Technology, Inc.

Inventor： Alireza Shabani ,  Bing Qi ,  Stephen Magno DiAdamo ,  Glen W. Miller ,  Ramana Rao Venkata Renuka Kompella

IPC: H04Q11/00 ,  H04B10/70

CPC classification number: H04Q11/0003 ,  H04B10/70

Abstract: A network element receives a classical header for a quantum payload, and processes the classical header to determine a destination endpoint for the quantum payload. The network element generates a new classical header for the quantum payload based on the destination endpoint. The network element sends the new classical header to a next hop ahead of the quantum payload at a time based on a number of hops between the network element and the destination endpoint.

公开(公告)号：US12238208B2

公开(公告)日：2025-02-25

申请号：US18175807

申请日：2023-02-28

Applicant: Cisco Technology, Inc.

Inventor： Stephen Magno DiAdamo ,  Alireza Shabani ,  Bing Qi ,  Reem M. Mandil

IPC: H04L9/08

Abstract: A network element in a quantum network receives a hybrid frame including a classical header and a quantum payload. The network element processes the classical header for a length of time and generates a new classical header. The network element drops a portion of the quantum payload based on the length of time spent processing the classical header and updates the hybrid frame to include the new classical header and the quantum payload without the dropped portion.

公开(公告)号：US12040840B2

公开(公告)日：2024-07-16

申请号：US17896565

申请日：2022-08-26

Applicant: Cisco Technology, Inc.

Inventor： Bing Qi

IPC: H04B10/70 ,  H04B10/40

CPC classification number: H04B10/70 ,  H04B10/40

Abstract: A first endpoint in a Quantum Key Distribution (QKD) system determines an operating mode for a hybrid transceiver for communicating in an optical communication session with a second endpoint. The operating mode is selected from a group containing a classical reception mode, a classical transmission mode, a quantum transmission mode, and a quantum reception mode. The first endpoint configures an input to a homodyne detector of the hybrid transceiver based on the operating mode and operates the hybrid transceiver in the operating mode for at least a portion of the optical communication session.