Question: (a) Construct the density matrix for an electron that is either in the state spin up along x (with probability 1/3) or in the state

(a) Construct the density matrix for an electron that is either in the state spin up along x (with probability 1/3) or in the state spin down along y (with probability 2/3).
(b) Find (S_y) for the electron in (a).

Step by Step Solution

★★★★★

3.42 Rating (165 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a From Example 121 the density matrix for an electron ... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Introduction To Quantum Mechanics Questions!

An electron that is confined to x ?? 0 nm has the normalized wave function where x is in nm.What is the probability of finding the electron in a 0.010-nm-wide region at x = 1.0 nm? So (1.414 nm-V2...

The period of the Bloch oscillations. Consider an electron that is subjected to an electric field. The electric field exerts a force F=-qE on the electron. Assume that the electron is initially not...

An electron that is moving through a uniform magnetic field has velocity When it experiences a v(40 km/s)i(35 km/s) F(4.2 fN)i (4.8 N)j

1) Consider a system of two non-identical fermions, each with spin 1/2. One is in a state with S, = 4. while the other is in a state with S, = -;. What is the probability of finding the system in a...

Locate a peer-reviewed research article that describes/defines Analysis of Student Learning . Then, create an article review in which you respond to each of the following: 1. Summarize the...

The cosmic dawn that preceded the epoch of reionization can be probed by low frequency CMB observations using a special radio hyperfine line emitted and absorbed by hydrogen atoms. This line is...

The motor carrier industry is probably the most visible segment of the transportation system in the United States. The motor carrier is also the most significant element of the U.S. freight transport...

the word limit should be 800 to 1000 words so please give the answers as requirement. In summary, it's time to understand your parcel characteristics as well as how the carriers will view your...

I need help with writhing a financial statement analysis report about Company Sprint Airline. I have attached the documents including the overview of the project and the template of it and example of...

Exercises Chapter 2 2.1 Marginal and conditional probability: The social mobility data from Section 2.5 gives a joint probability distribution on (Y1 , Y2 )= (father's occupation, son's occupation)....

The FASBs conceptual framework sets forth the Boards views on which topics?

Using the SmartHomes database do the following: Create and run a stored procedure (write code) in SQL Server to take in a customer ID, product ID, and quantity. Test the three executions of the...

When the market value of debt is the same as its face value, it is said to be selling at the: premium value. yield value. par value. discounted value.

How has technology (a) had an impact on analyzing waiting-line systems? (b) improved waiting-line performance?

Two gears, whose centers are 1.5 m apart, are connected by a belt. The smaller 0.40-m diameter gear is rotating with an angular velocity of 50 rad/s. Calculate the angular velocity of the larger...

The world distance record for riding a standard bicycle in 1 h is 49.70 km, set in 2005 in Russia (Figure P8.23). A fixed-gear bike was used, which means that the bike effectively had only one gear....

A motor running at 3000 rpm is connected to an output sheave through a V-belt. The output sheave drives a separate conveyer belt at 1000 rpm. The distance between the centers of the motor and output...

QUESTION 5 You entered into a 2-year interest rate swap three months ago in which you are the receiver (you receive fixed and pay floating). The yield to maturity of a 2-year fixed coupon bond three...

Question 27 (3.33 points) Which of the following is NOT a correct statement? A macro-assessment of country risk is adjusted for the particular business of the firm involved Lagging refers to the...

Question 24 In the installment amortization schedule, the interest can be extracted during each period through the following equation PV IPMT PPMT Nothing mentioned