Author Question: A quantum computer built from 4 qubits A) must be in only one of its 16 possible quantum states. ... (Read 45 times)

ereecah · **on:** Jul 29, 2018

A quantum computer built from 4 qubits

A) must be in only one of its 16 possible quantum states.
B) must be in only one of its 4 possible quantum states.
C) can be in all 8 of its 8 possible quantum states, simultaneously.
D) can be in all 16 of its 16 possible quantum states, simultaneously.
E) can be in all 4 of its 4 possible quantum states, simultaneously.

Question 2

A proton in a certain particle accelerator has a kinetic energy that is equal to its rest energy. What is the momentum of the proton as measured by a physicist working with the accelerator? (c = 3.00 108 m/s, mproton = 1.67 10-27 kg)

A) 2.51 10-19 kg m/s
B) 2.89 10-19 kg m/s
C) 4.34 10-19 kg m/s
D) 5.01 10-19 kg m/s
E) 8.68 10-19 kg m/s