Communication systems and methods

1. A communication system comprising:

one or more processors configured to:

instruct computing devices that communicate messages with each other via a time-sensitive network to securely exchange the messages using secret information, wherein the secret information includes an indication of non-repudiation;

direct the computing devices to exchange the secret information via a dedicated quantum channel in the time-sensitive network;

determine a quantum channel synchronization time associated with the secret information exchanged via the dedicated quantum channel; and

modify a local classical oscillator based on the quantum channel synchronization time, the local classical oscillator configured to provide a current time.

2. The communication system of claim 1 , wherein the one or more processors are configured to:

determine a classical channel synchronization time associated with the time- sensitive network; and

compare the quantum channel synchronization time with the classical channel synchronization time.

3. The communication system of claim 2 , wherein the one or more processors are also configured to:

modify the local classical oscillator based on the quantum channel synchronization time and comparison of the quantum channel synchronization time with the classical channel synchronization time.

4. The communication system of claim 3 , wherein the one or more processors are configured to:

modify the local classical oscillator based on the classical channel synchronization time before modifying the local classical oscillator based on the quantum channel synchronization time;

store a first message of the messages that includes the classical element synchronization time;

determine the classical channel synchronization time from the first message stored after the local classical oscillator is modified based on the classical channel synchronization time.

5. The communication system of claim 3 , wherein the one or more processors are configured to: instruct transmission of a first message to be displayed on a display of at least one computing device of the computing devices indicating the modification of the local classical oscillator based on the quantum channel synchronization time.

6. The communication system of claim 5 , wherein the one or more processors are configured to: instruct transmission of the first message to be displayed on the display at the at least one computing device of the computing devices based on a difference between the quantum channel synchronization time and the classical channel synchronization time exceeding a threshold time period.

7. The communication system of claim 1 , wherein the secret information further includes one or more of a quantum encryption key or a data hash.

8. The communication system of claim 1 , wherein the one or more processors are configured to: measure quantum bit error rates in links that form the quantum channel between the computing devices that are dedicated to exchanging the secret information.

9. A method comprising:

instructing computing devices that communicate messages with each other via a time-sensitive network to securely exchange the messages using secret information, wherein the secret information includes an indication of non-repudiation;

directing the computing devices to exchange the secret information via a dedicated quantum channel in the time-sensitive network;

determining a quantum channel synchronization time associated with the secret information exchanged via the quantum channel; and

modifying a local classical oscillator configured to provide a current time based on the quantum channel synchronization time.

10. The method of claim 9 , further comprising:

determining a classical channel synchronization time associated with the time-sensitive network; and

comparing the quantum channel synchronization time with the classical channel synchronization time.

11. The method of claim 10 , wherein comparing the quantum channel synchronization time with the classical channel synchronization time includes at least one of using a look-up table, using an algorithm, or subtracting the quantum channel synchronization time from the classical channel synchronization time.

12. The method of claim 10 , further comprising:

modifying the local classical oscillator based on the quantum channel synchronization time and comparison of the quantum channel synchronization time with the classical channel synchronization time.

13. The method of claim 12 , further comprising:

determining the quantum channel synchronization time after the local classical oscillator is modified based on the classical channel synchronization time;

modifying the local classical oscillator based on the classical channel synchronization time before modifying the local classical oscillator based on the quantum channel synchronization time.

14. The method of claim 12 , further comprising:

instructing transmission of a first message to be displayed on a display of at least one computing device of the computing devices indicating the modification of the local classical oscillator based on the quantum channel synchronization time after modifying the local classical oscillator based on the classical channel synchronization time.

15. The method of claim 14 , further comprising:

instructing transmission of the first message to be displayed on the display at the at least one computing device of the computing devices based on a difference between the quantum channel synchronization time and the classical channel synchronization time exceeding a threshold time period.

16. The method of claim 9 , wherein the secret information further includes one or more of a quantum encryption key or a data hash.

17. The method of claim 9 , further comprising:

measuring quantum bit error rates in links that form the quantum channel between the computing devices that are dedicated to exchanging the secret information.

18. A method comprising:

instructing computing devices that communicate messages with each other via a time-sensitive network to securely exchange the messages using secret information;

directing the computing devices to exchange the secret information via a dedicated quantum channel in the time-sensitive network;

determining a classical channel synchronization time associated with the time-sensitive network;

modifying a local classical oscillator based on the classical channel synchronization time;

determining a quantum channel synchronization time associated with the secret information exchanged via the dedicated quantum channel;

comparing the classical channel synchronization time and the quantum channel synchronization time; and

modifying the local classical oscillator configured to provide a current time based on the quantum channel synchronization time after modifying the local classical oscillator based on the classical channel synchronization time and quantum channel synchronization time exceeds a threshold time period.

19. The method of claim 18 , further comprising:

instructing transmission of a message to be displayed on a display of at least one computing device of the computing devices indicating the modification of the local classical oscillator based on the quantum channel synchronization time after modifying the local classical oscillator based on the quantum channel synchronization time.

20. The method of claim 18 , wherein the secret information includes one or more of a quantum encryption key, an indication of non-repudiation, or a data hash.