Consider a physical system whose three-dimensional state space is spanned by the orthonormal basis formed by the three kets {Je1>, Je2>, Je3>}. In the basis of these three vectors, taken in this order, the Hamiltonian H^ and the two operators B^ and D° are defined by: 3 i 0 -i 3 0 0 2 7 i 1 - 0. 2a A= hwo B= bo -i 7 1+i D= 2a 1+i 1-i 6. 2a -3a where wo and bo are constants. Also using this ordered basis, the initial state of the system is given by: (e1|v(0) (e2| v(0)) (e3| v(0)) 2 |v(0)) = 3 6 Q: What is the probability that the system will be found in the ground state after measuring H at t + 0? Q: After measuring H at t + 0, the operator B was measured. What is ± AB?

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
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Chapter7: Distance And Approximation
Section7.4: The Singular Value Decomposition
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Consider a physical system whose three-dimensional state
space is spanned by the orthonormal basis formed by the three
kets {Je1>, le2>, Je3>}. In the basis of these three vectors, taken
in this order, the Hamiltonian H^ and the two operators B^ and
D^ are defined by:
7
i
1- i
2a
H= hwo | -i 3 0
0 2
B= bo
-i
1+i
D=
0.
2a
1+i 1- i
6.
2a
-3a
where wo and bo are constants. Also using this ordered basis,
the initial state of the system is given by:
(2
|»(0)) =
e2l (0)
e3| v(0)
Q: What is the probability that the system will be found in the
ground state after measuring H att + 0?
Q: After measuring H at t + 0, the operator B was measured.
What is <B> ± AB?
Transcribed Image Text:Consider a physical system whose three-dimensional state space is spanned by the orthonormal basis formed by the three kets {Je1>, le2>, Je3>}. In the basis of these three vectors, taken in this order, the Hamiltonian H^ and the two operators B^ and D^ are defined by: 7 i 1- i 2a H= hwo | -i 3 0 0 2 B= bo -i 1+i D= 0. 2a 1+i 1- i 6. 2a -3a where wo and bo are constants. Also using this ordered basis, the initial state of the system is given by: (2 |»(0)) = e2l (0) e3| v(0) Q: What is the probability that the system will be found in the ground state after measuring H att + 0? Q: After measuring H at t + 0, the operator B was measured. What is <B> ± AB?
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