Random number generator
Provided is a random number generator including a single-photon emitter configured to emit single photons by pumping, a waveguide configured to guide the single photons emitted from the single-photon emitter to the inside of the waveguide, the waveguide including a first output terminal and a second output terminal that are respectively provided at both end portions of the waveguide, the single photons being output from the first output terminal and the second output terminal, and a first single-photon detector and a second single-photon detector respectively provided at the first output terminal and the second output terminal and configured to detect the single photons output from the first output terminal and the second output terminal, respectively.
1. A random number generator comprising:
a single-photon emitter configured to emit single photons by pumping;
a waveguide configured to guide the single photons emitted from the single-photon emitter to the inside of the waveguide, the waveguide comprising a first output terminal and a second output terminal that are respectively provided at both end portions of the waveguide, the single photons being output from the first output terminal and the second output terminal;
a first single-photon detector and a second single-photon detector respectively provided at the first output terminal and the second output terminal and configured to detect the single photons output from the first output terminal and the second output terminal, respectively; and
a resonator configured to optically amplify the single photons emitted from the single-photon emitter, the resonator being provided between at a center of the waveguide between the first output terminal and the second output terminal.
2. The random number generator of claim 1 , wherein each of the single photons emitted from the single-photon emitter is randomly output from one of the first output terminal and the second output terminal.
3. The random number generator of claim 2 , wherein a random number is generated based on a signal detected by the first single-photon detector and the second single-photon detector.
4. The random number generator of claim 2 , wherein the single-photon emitter is provided in the waveguide or outside of the waveguide.
5. The random number generator of claim 4 , wherein the single photons emitted from the single-photon emitter are formed directly in the waveguide.
6. The random number generator of claim 1 , further comprising a pumping source configured to pump the single-photon emitter.
7. The random number generator of claim 6 , wherein the pumping source comprises an optical pumping source configured to optically pump the single-photon emitter or an electrical pumping source configured to electrically pump the single-photon emitter.
8. The random number generator of claim 7 , wherein the optical pumping source comprises a laser light source.
9. The random number generator of claim 8 , wherein the laser light source comprises a laser diode.
10. The random number generator of claim 7 , wherein the electrical pumping source comprises a plurality of electrodes configured to apply an electric field to the single-photon emitter.
11. The random number generator of claim 1 , wherein the single-photon emitter, the waveguide, the first single-photon detector, the second single-photon detector, and the resonator are provided on a substrate.
12. The random number generator of claim 11 , wherein the substrate comprises a semiconductor substrate.
13. The random number generator of claim 1 , wherein the single-photon emitter comprises a quantum dot.
14. The random number generator of claim 1 , wherein the waveguide comprises silicon or silicon oxide.
15. The random number generator of claim 1 , wherein the first single-photon detector and the second single-photon detector respectively comprise one of semiconductor detector, charge-coupled device, and photomultiplier tube detector.
16. A random number generator comprising:
an electrical pumping source comprising a first electrode and a second electrode configured to apply an electrical field;
a single-photon emitter configured to emit single photons by pumping of the electrical pumping source based on the electrical field applied;
a waveguide configured to guide the single photons emitted from the single-photon emitter to the inside of the waveguide, the waveguide comprising a first output terminal and a second output terminal that are respectively provided at both end portions of the waveguide, the single photons being output from the first output terminal and the second output terminal; and
a first single-photon detector and a second single-photon detector provided at the first output terminal and the second output terminal, respectively, and configured to detect the single-photons output from the first output terminal and the second output terminal, respectively,
wherein the first electrode and the second electrode are provided on opposite surfaces of the waveguide, and
wherein the single-photon emitter is provided inside of the waveguide and between the first electrode and the second electrode.
17. The random number generator of claim 16 , wherein the electrical pumping source, the single-photon emitter, the waveguide, the first single-photon detector, and the second single-photon detector are provided on a substrate.
18. The random number generator of claim 16 , wherein the single-photon emitter further comprises a quantum dot.
19. The random number generator of claim 16 , further comprising a resonator configured to optically amplify the single photons emitted from the single-photon emitter, the resonator being provided in the waveguide.
20. A random number generator comprising:
a light source configured to emit light;
a single-photon emitter comprising a quantum dot and configured to emit single photons based on the quantum dot being irradiated by the light emitted from the light source;
a waveguide configured to guide the single photons emitted from the single-photon emitter toward one of a first output terminal and a second output terminal that are respectively provided at both end portions of the waveguide, the single photons being output from the first output terminal and the second output terminal;
a first single-photon detector and a second single-photon detector provided at the first output terminal and the second output terminal, respectively, and configured to detect the single-photons output from the first output terminal and the second output terminal, respectively; and
a resonator configured to optically amplify the single photons emitted from the single-photon emitter, the resonator being provided between at a center of the waveguide between the first output terminal and the second output terminal,
wherein the single-photon emitter is provided on a surface of the resonator or inside of the resonator.
21. The random number generator of claim 20 , wherein the single-photon emitter, the waveguide, the first single-photon detector, the second single-photon detector, and the resonator are provided on a substrate.