Device for generating a random electrical signal and associated architecture

Patent metadata

Field	Value
Publication number	US-11018690-B2
Application number	US-201716302619-A
Country	US
Kind code	B2
Filing date	May 18, 2017
Priority date	May 18, 2016
Publication date	May 25, 2021
Grant date	May 25, 2021

Abstract

A device for generating a random electric signal, including an input duct, an output duct, a generator of magnetic particles generating magnetic particles in the input duct, a diffusion chamber connected to the input duct and the output duct, wherein the diffusion chamber is designed to diffuse the generated magnetic particles, a displacement unit for displacement of the generated magnetic particles towards the diffusion chamber, and a converter that is designed to generate an electrical signal proportional to a characteristic, wherein the characteristic is the particle density in the diffusion chamber or the passage of magnetic particles at a predetermined location of an output duct connected to the diffusion chamber.

First claim

The invention claimed is:

1. A device for generating a random electrical signal, comprising:
at least one input duct;
at least one output duct;
a generator of magnetic particles capable of generating magnetic particles in the input duct;
a diffusion chamber connected to at least one of said input ducts and to at least one duct of said output ducts, wherein the diffusion chamber is able to diffuse the generated magnetic particles;
a unit for displacement of the generated magnetic particles towards the diffusion chamber; and
a converter that is designed to generate an electric signal proportional to a characteristic relating to the generated magnetic particles, wherein the characteristic is the density of magnetic particles in said diffusion chamber, or the passage of magnetic particles at a predetermined location of one of said output ducts that is connected to said diffusion chamber.

2. The device according to claim 1 , wherein said generator of magnetic particles is designed to generate skyrmions.

3. The device according to claim 1 , further comprising a control unit comprising an input terminal of a random input signal, wherein the control unit is designed to control said generator of magnetic particles according to the random input signal.

4. The device according to claim 3 , wherein said control unit is designed to control said generator of magnetic particles to generate a magnetic particle in the presence of a predetermined transition between two predefined states.

5. The device according to claim 1 , further comprising a thermostat that is designed to control the temperature of said diffusion chamber.

6. The device according to claim 1 , wherein at least either the geometry or the arrangement of said input and output ducts that are connected to said diffusion chamber is chosen to maximize the probability that the generated magnetic particles will be diffused.

7. The device according to claim 1 , wherein said diffusion chamber comprises a shutter that is designed to close each output duct.

8. An architecture for generating a random electrical signal comprising:
a plurality of devices according to claim 1 ,
a control unit comprising an input terminal for the introduction of a random input signal, wherein the control unit is able to control each generator of magnetic particles according to the random input signal.

9. The architecture according to claim 8 , wherein the random input signal is broken down into a number of predefined states and transitions between these states, and wherein said control unit is able to control each generator of magnetic particles according to the states and transitions.

10. The architecture according to claim 8 , comprising two devices, a first device and a second device, wherein the random input signal breaks down into transitions between two states called low state and high state, wherein a high transition is a transition from the low state to the high state, and a low transition is a transition from the high state to the low state, wherein said control unit is designed to control the first generator of magnetic particles to generate a magnetic particle in the presence of a high transition, and to control the second generator of magnetic particles to generate a magnetic particle in the presence of a low transition.

Assignees

• Thales Sa
• Centre Nat Rech Scient

Inventors

• Pinna Daniele
• Grollier Julie
• Cros Vincent
• Querlioz Damien
• Bessiere Pierre
• Droulez Jacques

Classifications

• G06F7/588 Primary

  Random number generators, i.e. based on natural stochastic processes · CPC title

• G06F7/70

  using stochastic pulse trains, i.e. randomly occurring pulses the average pulse rates of which represent numbers {(conversion of analogue signals into stochastic pulse trains and vice versa H03M1/04)} · CPC title

• H03M7/26 Primary

  Conversion to or from stochastic codes · CPC title