atmosphere conference 2015: future of massively parallel computing
TRANSCRIPT
Definitions by Michele Mosca
1. Since the world is quantum, any computer is a quantum computer. Conventional
computers are just weak quantum computers, since they don’t exploit intrinsically quantum effects,
such as superposition and entanglement.
2. A quantum computer is a computer that uses intrinsically quantum effects that cannot naturally be
modeled by classical physics. Classical computers may be able to mathematically simulate instances
of such computers, but they are not implementing the same kinds of quantum operations.
3. A quantum computer is a computer that uses intrinsically quantum effects to gain some advantage
over the best known classical algorithms for some problem.
4. A quantum computer is a computer that uses intrinsically quantum effects to gain an asymptotic
speed-up over the best known classical algorithms for some problem.
5. A quantum computer is a computer that is able to capture the full
computational power of quantum mechanics, just as conventional computers are
believed to capture the full computational power of classical physics.
Environment requirements
A Unique Processor Environment● Shielded to 50,000× less than Earth’s magnetic field
● In a high vacuum: pressure is 10 billion times lower than atmospheric pressure
● 192 i/o and control lines from room temperature to the chip
● "The Fridge" and servers consume just 15.5kW of power
● Power demand won’t increase as it scales to thousands of qubits