________________________________________________________________________

_______________________________________________________________________

Note: Lectures will begin Monday Jan11.
** Note:** I send emails to the class via the registrar's email lists for
this course. Please make sure that you have registered your email with the
university.
Unfortunately some service providers see this as an indication that this
is spam and dumps the mail into a junk, or spam, or other labeled
folder. I do not know how to get around this as I do not want to give
everyone everyone else's email, I do not want to enter all 50 separate
email addresses as separate emails, but I want people to get them.
Please remember to look into your junk/spam/... folder as well if you do not
get the emails for this class.

- Talk to your students early in course about cheating - what it is, why they should not do
it, and even though it is easier to do it now, it is easier to catch as all the necessary
evidence is readily available.
- Be explicit and detailed about integrity expectations in your posted course outline and exam
instructions
- Tell students what happens if they are suspected of cheating:
- Interview with instructors and undergraduate chair, and if response is unsatisfactory -
- Zero on course component (e.g. exam) and report sent to Dean's Office, then -
- Interview with the Associate Dean, then -
- At least: Letter of reprimand on permanent file
- More serious cases and all second offences: Move to President's Disciplinary Committee, with consequences up to and including expulsion

- Interview with instructors and undergraduate chair, and if response is unsatisfactory -

- Tell students what happens if they are suspected of cheating:

- Be explicit and detailed about integrity expectations in your posted course outline and exam
instructions

Final Exam

The exam will be a 24 hr open book exam starting on Tues Apr 20 at 15:30
PM PDT (22:30 UTC) and going to 15:30PM PDT (22:30 UTC) Wed Apr 21

The finished exam must be sent to me at my email address unruh@physics.ubc.ca by 15:30:PM Apr 21 PDT
If due to reasons beyond your control, it is impossible to send it to me,
please phone me ( +1 604 7365745 or +1 778 238 7962) before 15:30 to let me know of the problem.

While it is open book that does not mean that you can consult with, or in any way communicate with any other person
about the exam during that time period. You will be asked to sign a statement to that effect on the exam. Any such
commincation is academic misconduct with all of the consequences attached to such misconduct.

- Review of Quantum Mechanics
- Complementarity,Entanglement,Delayed Choice,
- Bell's Thm, Hardy's System, and the difference between quantum theory and Classical theory.
- Conditions in QM (Aharonov's study of setting conditions at past and future times)
- Linear Quantum Field theory (Bosonic theories, Simple Harmonic Oscillator, squeezed states)

- Particles and Detectors
- Hawking Radiation and Bugoliubov
- Application to quantum noise in Ligo
- Introduction to Quantum Computing (Grover, Shor, and Quantum bit operation diagrams
- ....

- Complementarity, delayed choice, quantum eraser (Ch 8 from Zubairy's new book "Quantum Mechanics for beginners")
- Bell's Thm, Hardy's system, and Quantum Mechanics
- Aharonov Bergman and Lebowitz Time symmetric quantum mechanics.
- How to measure the spin of a spin 1/2 particle and obtain a spin of 100
- Mean King Problem How to know what the value of sigma-x, sigma-y or sigma-z is of a two level system. "A procedure is described whereby the result of the measurement of any of the three Cartesian components of the spin of a single spin- —, particle at a single time can be inferred with certainty from the result of two other measurements, one of which is carried out before, and the other after, the time in question"
- A series of movies showing what the effect is of decreasing the accuracy of the measurements for a two-time spin 12.5 system.
- Vaidman Bomb detector
- Book-ch 4 This is a chapter from a book being written by R Schuetzhold and me.
- Norm for modes and associated Annihilation operators
- Norm and Frequency It is the norm of a mode, not its temporal frequency which determines which is associated with the Annihilation operators.
- "Assymptotic Adiabatic approximation for time dependent Harmonic Osciallator"
- A Simplified Landau Zenner derivation
- Particle creation by expanding Universe (Feb 10 2021-- many more misprints corrected)
- Interaction Representation and Detectors
- Accelerated Detector The calculation that an accelerated detector in the Minkowski vacuum state is excited at a thermal rate.
- Recent paper on the detection by two detectors and paradoxical results thereof
- Amplifier model
- "popular talk on Gravitational radiation and the quantum Ligo detector"
- One of the very early papers (1979) on the quantum nature of gravitational wave detectors, including laser detectors.
- Laser Interferometer detection of force on a Mirror
- Handwritten notes on the effect of laser beam on radiation pressure quantum fluctuations on detector
- Caves 1980 PRL showing that radiation pressure fluctuations add noise to interferometer.
- Original paper on laser noise
- Noise in Interferometer Hand notes
- Notes on Quantum Interferometer II (some of this replaces the previos notes, and extends them)
- Hung Ou Mandel experiment
- Beamsplitter calc and Hung Ou Mandel effect
- quantum computing intro and Grover's algorithm
- First paper on Adiabatic Quantum Computing by Farhi et al.
- Varieties of Q Compting Hand written notes ( for an amplification of the Adiabatic thm derivation see HERE (altered Apr2-18:30 to include Berry's phase)
- Error Correction (Includes
diagramatic representation of Quantum Gates)

Error correction notes 2021 - Quantum Fourier Transform and Shor's algorithm
- Diagram of Fourier Transform
- Diagram of Shor Algorithm

If not handed in in class, put assignments into box on shelf outside my room (in 311 Hennings) labeled Phys 341. (Not into the metal sorting rack but into the box) The box is inside Rm 311 Hennings-- go right into the room up to the table, then turn right. The shelf is on your right. My office is straight ahead of you.

- Assignment 1 Due Jan20 (A couple of misprints fixed Jan 14)
- Assignment 2 Due Feb 1
- Assignment 3 Due Feb 15 (Yes, first day of
midterm break, but I want to publish the solutions before the midterm)
misprints in problem 4 corrected Fri Jan 12. Note I use units so that the veloity
of sound equals 1.

On looking at the problems more deeply, I have decided that problem 4 is possibly too difficult, given what I managed to cover in class. I am therefor making it a bonus problem.. The max mark will be for the first three problems. If you do the fourth, it will count extra. Thus you could get a grade of higher than 100\% on this assignment.

The lesson I wanted to teach with this problem is more succinctly done for a simpler, two oscillator system. I describe this in the notes I have just published above under "Norm and Frequency". - Midterm- Unfotunately problem 5c) was
originally supposed to be part d of problem 1, but I removed
it as being too much. Unfortunately it decided it did not want to be removed,
and instead migrated down to problem 5, where it made no
sense. This will ignored in the marking.

The redo of this midterm will be due Monday Mar 8 at 23:59 PST. No extention. The solutions will be posted Mar 9 at 00:05 PST - Assignment 4 Due Mar 10 23:59 PST
- Assignment 5 Due Apr 6 23:59 PST
[Correct some misprints in problem 3--Apr 2
## Solutions

Notes, solutions or documents linked to from this page and hosted on theory.physics.ubc.ca are copyright W. G Unruh. 2020 unless created by others