Build your own quantum computer for fun and profit
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Build Your Own Quantum Computer for Fun and Profit!. Stephen Granade. Bits are 1s and 0s (i.e. base 2). 168421. 1. 0. 0. 1. 1. 1621. + +. = 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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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

Bits are 1s and 0s (i.e. base 2)

168421

1

0

0

1

1

1621

+ +

= 19


Save us gordon moore

Save Us, Gordon Moore!


Parallel computation takes more space

Parallel ComputationTakes More Space

Photo credit: pure_martin


Light polarization states

Light Polarization States

Vertical light:

Horizontal light:

A mix:

Amplitudes

Square for probabilities:


What s going on with the 3 polarizers

What’s Going On With The 3 Polarizers

Vertical polarizer:

Horizontal polarizer: nada


What s going on with the 3 polarizers1

What’s Going On With The 3 Polarizers

Vertical polarizer:

45 degree polarizer:

Horizontal polarizer:


Bits hold 1 number qubits can hold all numbers

Bits Hold 1 NumberQubits Can Hold All Numbers!

3-Bit Number

3-Qubit Number

Superposition makes

this possible


Tangent entanglement happens when one qubit s state depends on another s

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!


You can add all numbers at once

You Can Add All Numbers At Once!

Classical Computer

Quantum Computer


It s just an algorithm

It’s Just an Algorithm

Public

Private


Turning factoring into period finding

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


Shor s algorithm is fast

Shor’s Algorithm is Fast

Classical factoring

Shor’s Algorithm


Grover s algorithm finds stuff quickly

Grover’s Algorithm Finds Stuff Quickly

Searches unsorted data

Photo credit: seanabrady


Decoherence smears out states

Decoherence Smears Out States


There are lots of ways to make a quantum computer

There are Lots of Ways to Make a Quantum Computer

Photons

Trapped Ions

Optical Lattice

Liquid NMR

Spintronics


7 qubit computer from ibm

7-Qubit Computer from IBM

2001. Chuang et. al.

Factored

15

3

5


First qubyte from innsbruck

First Qubyte from Innsbruck


Quantum computer onna chip

Quantum Computer Onna Chip

Sadly I have no good pictures of the group or its research besides this graphic from the cover of Science


D wave maybe

D-Wave…maybe


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