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Simplifying Quantum Circuitry

Category: Science & Technology
Posted: August 4, 2011 07:55AM
Author: Guest_Jim_*

Would you believe the circuitry for a quantum computer could be complex? I know; it surprises me too. Within normal electronic circuits are logic gates that will perform an elementary operation on a signal, such as “+1.” These gates are triggered by a control bit, but because quantum computers use quantum bits, or qubits, it is complicated to execute the operation. Electronic bits exist as 1’s or 0’s and nothing more. Qubits exist as 1’s and 0’s with the major difference being the conjunction as qubits may indeed exist as both 1 and 0 at the same time. To execute the operation requires decomposing the system, a very complex process that also requires a large volume of circuitry. Researchers at the University of Bristol's Center for Quantum Photonics have determined a way around the need for decomposition which will allow for simpler and smaller circuitry in quantum computers. They hope to test their technique on quantum algorithms such as Shor’s factoring algorithm.



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