This is my iGnite Night talk from Surge 2011. I describe Grover's Search, a Quantum Computing search algorithm that is the fastest possible in this Universe. It's a challenge to explain something about Quantum Computing in 10 minutes!
Quantum Computing in a Nutshell: Grover's Search and the World of Quantum Com...Daniel Austin
[Slides from NoSQL Now! 2013 Lightning Talks]
Ever wonder about quantum computing? With the recent announcement of the first commercial deployment off a quantum computing device, we’ve now crossed the barrier between theory and practice. This just-for-fun talk will provide some insight into quantum computing and related topics.
Quantum Computing in a Nutshell: Grover's Search and the World of Quantum Com...Daniel Austin
[Slides from NoSQL Now! 2013 Lightning Talks]
Ever wonder about quantum computing? With the recent announcement of the first commercial deployment off a quantum computing device, we’ve now crossed the barrier between theory and practice. This just-for-fun talk will provide some insight into quantum computing and related topics.
Alice and Bob’s quest through the fascinating quantum mechanics world as a way to avoid archvilainess Eve eavesdropping. In 1994, Peter Shor showed that many of the cryptosystems used today can be broken using a quantum computer. This idea will be explained together with a short overview of qubit systems. Next, we will see how quantum computing gives rise to the possibility of quantum key distribution with unparalleled security. We will end with a brief discussion on post-quantum cryptography concepts.
The Fastest Possible Search Algorithm: Grover's Search and the World of Quant...Daniel Austin
[Slides from NoSQL Now! 2013 Lightning Talks]
Grover’s Search is a famous Quantum Computing algorithm for searching random databases. It’s the fastest possible search algorithm in this universe. This is what Google will look like when it grows up! This is the second of 2 parts, explaing the algorithm in more detail.
This is the presentation used by Dr Charles Bennet ,Fellow IBM during his Video Conferencing Lecture on Quantum Information for students at NIT Warangal
Talk by Rana Prathap from IIT Kharagpur on the Introduction to Quantum Computing at the first Quantum Computing meetup in Hyderabad. Venue: T-hub, IIIT Hyderabad
An introduction to quantum computing, its history and evolution from concept to commercial quantum computer, and an overview of relevant use in biomedical informatics and medice
Quantum Computing Primer - Future of Scientific Computing: Opportunities for ...Dr Rajnish Mallick
Quantum Computing Primer - Future of Scientific Computing, covers the following:
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Alice and Bob’s quest through the fascinating quantum mechanics world as a way to avoid archvilainess Eve eavesdropping. In 1994, Peter Shor showed that many of the cryptosystems used today can be broken using a quantum computer. This idea will be explained together with a short overview of qubit systems. Next, we will see how quantum computing gives rise to the possibility of quantum key distribution with unparalleled security. We will end with a brief discussion on post-quantum cryptography concepts.
The Fastest Possible Search Algorithm: Grover's Search and the World of Quant...Daniel Austin
[Slides from NoSQL Now! 2013 Lightning Talks]
Grover’s Search is a famous Quantum Computing algorithm for searching random databases. It’s the fastest possible search algorithm in this universe. This is what Google will look like when it grows up! This is the second of 2 parts, explaing the algorithm in more detail.
This is the presentation used by Dr Charles Bennet ,Fellow IBM during his Video Conferencing Lecture on Quantum Information for students at NIT Warangal
Talk by Rana Prathap from IIT Kharagpur on the Introduction to Quantum Computing at the first Quantum Computing meetup in Hyderabad. Venue: T-hub, IIIT Hyderabad
An introduction to quantum computing, its history and evolution from concept to commercial quantum computer, and an overview of relevant use in biomedical informatics and medice
Quantum Computing Primer - Future of Scientific Computing: Opportunities for ...Dr Rajnish Mallick
Quantum Computing Primer - Future of Scientific Computing, covers the following:
- Why you should Learn Quantum Computing
- Quantum Computing Basics
- Applications with Business Opportunities
- Business and Technology Landscape
Similar to The Fastest Possible Search Algorithm (20)
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The Fastest Possible Search Algorithm
1. The Fastest Possible Search
Algorithm
Sep, 2011
Daniel Austin
Technical Staff
PayPal, Inc.
Surge 2011 Conference
September 28, 2011
2. INTRO: GROVER’S SEARCH
• “Grover‟s Search” is the name of a
Quantum Computing algorithm for
searching random databases. It‟s the
fastest possible search algorithm in this
universe, running in O(N^1/2) (as
opposed to O(N) in the macroverse)
• The challenge: Quantum Computing
101 in 10 minutes
Confidential and Proprietary
3. QUANTUM COMPUTING 101
• Describes quantum logical processes
analogous to classical computing
• Multivariate Logic
– Bits: yes|| no
– Qubits: yes||no||maybe
– Probabilistic results instead of hard answers
• Quantum “Weirdness”
– Teleportation, superdense coding, non-
causal computations, multiversal
parallelism, entanglement, cryptography
R. P. Feynman, “Quantum mechanical computers”, Optics News, February 1985, 11, p. 11
Confidential and Proprietary
4. CURRENT STATE OF QUANTUM
COMPUTATIONAL PLAY
• We can now read and write 16 qubits
• Transient spintronics experiments ~ 2000 ms!
• Teleportation: intercontinental, ~ 5000 KM
• IBM demonstrates true entanglement 2006
• RSA algorithm Cracked 2008
• Yale demonstrates 1st quantum chip 2009
• D-Wave Announces the first commercially
available „quantum computer‟ May 2011!
– (But does it really work??)
Confidential and Proprietary
5. QUANTUM LOGIC GATES
• Like classical logic
circuits, but
additional quantum
logic gates
• Hadamard, Pi/8
(phase), CNOT,
many others
Images courtesy Wikipedia.com
Confidential and Proprietary
8. FASTEST POSSIBLE?? PROVE IT!
• Classical v. Quantum: O(N) v
O(N^1/2) (!)
• Any alternate algorithm will have to
run at least as many iterations
• Proof can‟t be contained in 1 slide!
Confidential and Proprietary
9. SUMMING UP
Quantum Computing is real and coming
soon to a computer near you
QC algorithms are qualitatively different
and can perform non-classical feats of
computation
Rapid progress in the field right now
– 1st commercial implementations
– Quantum cryptography, teleportation,
spintronics all featured in Nature this week!
Confidential and Proprietary
10. QUANTUM ADVICE
I think I can safely say that nobody understands
quantum mechanics. ... Do not keep saying to yourself,
if you can possibly avoid it, 'But how can it be like that?'
because you will get 'down the drain', into a blind alley
from which nobody has yet escaped. Nobody knows how
it can be like that.
Richard Feynman, The Character of Physical Law
Daniel Austin
PayPal, Inc.
daaustin@PayPal.com
@daniel_b_austin
Confidential and Proprietary
Editor's Notes
Note that this is a work in progressStill being worked on, things are fluid though the direction is clear