A quantum computer performs calculations based on quantum mechanics, the behavior of particles at the subatomic level. Unlike conventional computers that use bits of 0s and 1s, quantum computers use quantum bits or qubits that can be 0 and 1 simultaneously. This superposition allows quantum computers to manipulate enormous combinations of states at once, potentially performing calculations millions of times faster than classical computers. If built, quantum computers could revolutionize computing in the 21st century by tapping directly into the vast potential of quantum mechanics.

2. What is a quantum computer?
 A quantum computer is a machine that
performs calculations based on the laws of
quantum mechanics, which is the behavior
of particles at the sub-atomic level.
The nineteenth century was known as the machine age, the twentieth
century will go down in history as the information age. I believe the twenty-
first century will be the quantum age. Paul Davies, Professor Natural
Philosophy – Australian Centre for Astrobiology

4. Allowing computers to take advantage of quantum
mechanical behaviour allows us to do more than cram
increasingly many microscopic components onto a
silicon chip. it gives us a whole new framework in which
information can be processed in fundamentally new
ways.
Rather than store information using bits represented by 0s or 1s as conventional
digital computers do, quantum computers use quantum bits, or qubits, to encode
information as 0s, 1s, or both at the same time. This superposition of states—
along with the other quantum mechanical phenomena of entanglement and
tunneling—enables quantum computers to manipulate enormous combinations
of states at once.

5. Representation of Data
• Quantum computers, which have not been built yet, would be based on
the strange principles of quantum mechanics, in which the smallest
particles of light and matter can be in different places at the same time.
• In a quantum computer, one "qubit" - quantum bit - could be both 0 and 1
at the same time. So with three qubits of data, a quantum computer could
store all eight combinations of 0 and 1 simultaneously. That means a
three-qubit quantum computer could calculate eight times faster than a
three-bit digital computer.
• Typical personal computers today calculate 64 bits of data at a time. A
quantum computer with 64 qubits would be 2 to the 64th power faster, or
about 18 billion billion times faster. (Note: billion billion is correct.)

6. To speed computation, quantum computer tap directly into an unimaginably vast fabric of reality–the strange and
counterintuitive world of quantum mechanics. While we are only at the beginning of this journey, quantum computing has
the potential to lead to breakthroughs in science, business, and other domains.

11. THANK YOU
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