1. Quantum Computing Science A brief history of Quantum Computing
Wei-Jan Chen
SEAIP 2017
NCHC, Taichung
Dec. 4, 2017

2. Outline Quantum Mechanics and Computer Science
Quantum computing: The present and Outlook

3. The origin of Quantum Theory
1905
1913
1900
Max Planck
Energy quantization
En = nhν
Albert Einstein
Photoelectric effect
“Photon”
Neils Bohr
Atomic Model

4. Building Quantum Mechanics
1924
1925
1926
1927
Erwin Schrödinger
Wave Mechanics
Werner Heisenberg
Uncertainty Principle
Louis de Broglie
Matter Wave
λ=p/h
Werner Heisenberg
Matrix Mechanics
Max Born
Probability Amplitue

5. How the Quantum Mechanics change the world?
Chemistry
Semiconductor
Laser
Biology
Nano-technology

6. The Mystery of Quantum Mechanics
Schrödinger’s Cat
God does not play dice
Copenhagen interpretation
EPR paradox
Quantum Correlation

7. Computing machine ENIAC IC Abacus 2017 1946 1964 1947 1954 1970 1944
Mark I
VLSI
Transistor

8. Computing change our life
IoT
Fintech AI
Smart City
Cloud Computing
AR & VR
Big Data 5G
Health Care
3D Printing

9. The limit of Moore’s Law

10. Quantum Technologies

11. Quantum Mechanics and Computer Science
1980
1982
1985
1994
1996
Paul Benioff
Turing Machine
David Deutsch
Quantum Computer
Peter Shor
Quantum Algorithm
Lov Grover
Sorting Algorithm
Richard Feynman
Quantum Computer

12. What is Quantum Computing?
Quantum computer uses quantum bits, or qubits.
“superposition”, “entanglement” +1 X 1 1 1

13. National Investment in Quantum technologies
Source: ”A roadmap for quantum technologies in the UK” 2015

14. SCI Research Paper

15. SCI Paper Statistics by Country

16. Approved Patent in USA

17. The Challenge of Quantum Computing
Quantum computing can be used for high efficiency computing but qubits are very easily influenced by environment. How to tolerate noise and errors?
Ex. Factorizing a 2,000-bit number in one day would take 100 million qubits, even if individual quantum operations failed just once in every 10,000 (0.01%) operations. 1 1

18. Techniques for Quantum computer: qubit
Technology
Legend
Characteristic
Company
Superconducting loops
Coherent time: S
Successful rate: 99.4%
Entanglement: 9
Google
IBM
Quantum Circuits
D-Wave
Trapped Ion
Coherent time: >1000 S
Successful rate: 99.9%
Entanglement: 14
IonQ
Silicon Quantum dots
Coherent time: 0.03 S
Successful rate: 99%
Entanglement: 2
Intel
Topological qubits
Coherent time: unknown
Successful rate: unknown
Entanglement: unknown
Microsoft
Bell Labs
Diamond vacacies
Coherent time: 10 S
Successful rate: 99.2%
Entanglement: 6
Quantum Diamond Technologies

19. ICT Magnate pursue Quantum supremacy
General Quantum Computer
1999
QuTech
Quantum Circuits Inc
2015
2015
Q Experience
Quantum Diamond Tech
2009
Bell Labs
qubits
qubits
2014 UCSB
qubits

20. Outlook Three Priorities
Quantum simulation. Modelling chemical reactions and materials.
Quantum-assisted optimization. In all quantitative disciplines.
Quantum sampling. In statistics and machine learning.
Short-term prediction. Next 5-year will have small device.

21. Outlook

22. Thanks for your attention