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Build Your Own Quantum Computer for Fun and Profit!

Build Your Own Quantum Computer for Fun and Profit!. Stephen Granade. Bits are 1s and 0s (i.e. base 2). 16 8 4 2 1. 1. 0. 0. 1. 1. 16 2 1. + +. = 19. Save Us, Gordon Moore!. Parallel Computation Takes More Space. Photo credit: pure_martin. Light Polarization States.

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Build Your Own Quantum Computer for Fun and Profit!

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  1. Build Your Own Quantum Computer for Fun and Profit! Stephen Granade

  2. Bits are 1s and 0s (i.e. base 2) 16 8 4 2 1 1 0 0 1 1 16 2 1 + + = 19

  3. Save Us, Gordon Moore!

  4. Parallel ComputationTakes More Space Photo credit: pure_martin

  5. Light Polarization States Vertical light: Horizontal light: A mix: Amplitudes Square for probabilities:

  6. What’s Going On With The 3 Polarizers Vertical polarizer: Horizontal polarizer: nada

  7. What’s Going On With The 3 Polarizers Vertical polarizer: 45 degree polarizer: Horizontal polarizer:

  8. Bits Hold 1 NumberQubits Can Hold All Numbers! 3-Bit Number 3-Qubit Number Superposition makes this possible

  9. Tangent: Entanglement Happens When One Qubit’s State Depends on Another’s Entangled Not Entangled If you measure the firstqubit and it’s 0, you knowthe second qubit is 0 too.They’re entangled! If you measure the firstqubit and it’s 0, you don’tknow the second qubit. They’re independent!

  10. You Can Add All Numbers At Once! Classical Computer Quantum Computer

  11. It’s Just an Algorithm Public Private

  12. Turning Factoring into Period Finding If n has the factors p and q,then, if you pick a random x,the above sequence has aperiod that evenly dividesinto (p-1)(q-1) Leonhard Euler

  13. Shor’s Algorithm is Fast Classical factoring Shor’s Algorithm

  14. Grover’s Algorithm Finds Stuff Quickly Searches unsorted data Photo credit: seanabrady

  15. Decoherence Smears Out States

  16. There are Lots of Ways to Make a Quantum Computer Photons Trapped Ions Optical Lattice Liquid NMR Spintronics

  17. 7-Qubit Computer from IBM 2001. Chuang et. al. Factored 15 3 5

  18. First Qubyte from Innsbruck

  19. Quantum Computer Onna Chip Sadly I have no good pictures of the group or its research besides this graphic from the cover of Science

  20. D-Wave…maybe

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