How does a quantum computer work?

  • 1 Replies

0 Members and 1 Guest are viewing this topic.


Sunil Kumar

  • Guest
How does a quantum computer work?
« on: 31/05/2008 10:43:30 »
Sunil Kumar asked the Naked Scientists:

I mailing from Kuwait,

I am fairly new to podcasts, and in the process of listening to many podcasts relating to science and tech, especially computer technology.

Currently i am on episode date 28/11/2006 of the naked scientist podcast. Hope to catch with you guys soon.

I have a question related to quantum computers. Can you explain the concept of the Qbits. Is it similar to the Bits we use in the existing technology?

Wish you guys would have started all this when i was in school.Keep up the good work.

What do you think?


Offline JP

  • Neilep Level Member
  • ******
  • 3366
    • View Profile
How does a quantum computer work?
« Reply #1 on: 31/05/2008 16:55:56 »
Basically photons have a quantum mechanical property called "spin."  If you measure spin, it can take on one of two values (up or down, for example), just like a classical bit can be 0 or 1.  It's a powerful tool powerful because in quantum mechanics, a qbit can be be both up and down at the same time during a computation whereas a classical bit has to be in either the 0 or the 1 state.  This allows much faster computation of some complicated problems.