Physics 581 Spring 2020

Quantum Optics II

Credit: P. Grangier, "Make It Quantum and Continuous", Science (Perspective) 332, 313 (2011)

 

University of New Mexico

Department of Physics and Astronomy

 
Instructor: Prof. Ivan H. Deutsch
Lectures: Mon. and Wed. 11:00am-12:15pm, P&A Room 1160

Office Hours: TBA

 
Teaching Assistant: Maneul Muñoz
 

Quantum optics is a broad and varied subject that deals with the study, control, and manipulation of quantum coherence associated with electromagnetic fields. This includes nonclassical optical media, the basic interaction of photons and atoms, and the nonclassical nature of the electromagnetic field itself.  Quantum optics is the natural arena for experimental tests of the foundations of quantum mechanics and measurement, especially in the context of open, nonequilibrium quantum systems. Most recently, developments in theory and experiment have led to the possibility of applying the coherent control of quantum optical systems to perform completely new information-processing paradigms such as quantum communication and quantum computation.


Quantum Optics II (Physics 581)

- Quantum optical particles and waves (discrete and continuous variables)
- Foundations of entanglement and quantum maps
- Open quantum systems and decoherence
- Quantum trajectories and continuous measurement
- Fundamental paradigms in quantum optics (cavity QED, ion and neutral atom traps, entangled light)
- Applications in quantum information science (quantum communication, computation, metrology)

 

On this page:


 

General Information

 

"Recommended" Texts (none required):

* Introduction to Quantum Optics: From the Semi-classical Approach to Quantized Light - Gryberg, Aspect, Fabre

* Quantum Optics - Scully and Zubairy,

* Quantum Optics, by R. Y. Chiao and J. C. Garrision

* Quantum Optics, by M. Fox

 

We will not be following any of these texts directly . They all have strengths in different areas and are good to have on your bookshelf.

 

 

Grading:

* Problem Sets (5-8 assignments) 75%

* Final Project 25%

 

* Problem sets will be available on the web, about every other week. Generally assignments will be due in class, Wednesdays.

 

 


 

Tentative Syllabus

  

Phys. 581: Quantum Optics II

I. Nonclassical Light

            A. Nonlinear optics and nonclassical light.

            B. Squeezed states.

            C. Homodyne detection.

            D. Phase space methods -- Quasiprobability distributions, P-Glauber, Q-Husimi, W-Wigner functions.

            E. Correlated twin photons.

II. Foundations

            A. Bipartite entanglement.

            B. EPR and Bell’s Inequalities, finite and infinite dimensional systems.

            C. Completely-positive map, Kraus operators, and POVMs.

 

III. Open quantum systems

            A. System-reservoir interactions.

            B. Born-Markoff approximation and the Lindblad Master Equation.

            C. Phase-space representation:  Fokker-Planck equation.

            D. Heisenberg-Langevin equation.

 

IV. Continuous measurement

            A. Quantum trajectories - different unravelings of the Master Equation.

            B. Quantum Monte-Carlo wave functions.

            C. The stochastic Schroedinger equation.

 

V. Applications in quantum information processing

            A. Quantum communication

            B. Quantum computation

            C. Quantum metrology

 


 

Lectures
Notes in .pdf, Video in .mp4 (Quicktime).

 Jan. 22

Review: Coherence, Particles and Fields

Lecture #1

Podcast 1

 Jan. 27

 Review: Nonclassical Light - Glauber Theory


 

Jan. 29

 Continuous variables:

Squeezed states, general properties


Feb. 3

Quadratures, shot noise, and homodyne detection


 Feb. 5

Introduction to nonlinear optics and the generation of nonclassical light


 Feb.10

No Lecture
(to be made up)

 Feb. 12

Three Wave Mixing Production of Squeezed Sates

 Feb. 17

Introduction to Phase Space Representations 


 Feb. 19

Operator Ordering and Quasiprobability Distributions

Feb. 24

Quasiprobability functions Wigner (W), Husmi (Q), and Glauber (P)


 Feb. 26

 Tensor product structure and entanglement


 Feb. 28

Schmidt decomposition

Mar. 2 Entanglement in quantum optics - particles and waves

Mar. 4

Parametric Conversion I
Type I phase matching:
Time energy entanglement

Mar. 9

Parametric Conversion II

Spatial mode and polarization entanglement

Two-mode squeezing and CV entanglement


 

Mar. 11

 

Tests of Bells Inequalities in Quantum Optics


 Mar. 16-20

Spring Break


Mar. 23 Intro to open quantum systems:
 Quantum operations, CP maps, Kraus Representation

Mar. 25

Irreverisble bipartite system-reservoir interaction.

Markov approximation - Lindblad Master Equation

 

Mar. 30

 Derivation of the Lindblad Master Equation Born-Markov approximation


Apr. 1

 Examples of Master Equation Evolution:

Damped two-level atom


 Apr. 6

Damped Simple Harmonic Oscillator

 


 

Apr. 8

Fokker-Planck Equation and Decoherence


 

Apr. 13

 Quantum Trajectories I

Measurement theory


 

Apr. 15

 

Continuation

Nonlinear Stochastic Jump Equation


 

Aprl. 20

 

 Quantum Trajectories II

Quantum Monte-Carlo Wave Function Algorithm


Apr. 22

Quantum Trajectories III

Different Unravelings of the Master Equation

 


 

Apr. 27

 

Continuation


 Apr. 29

The Stochastic Schrodinger Equation.

Quantum State Diffusion


 May 4


QND measurement and and the Stochastic Schrodinger Equation



May 6.

 

Continuation



 

Problem Sets

Problem Set #1

Problem Set #2

  • Questions

Problem Set #3

  • Questions
Problem Set #4
  • Questions
Problem Set #5
  • Questions
Problem Set #6
  • Questions
Problem Set #7
  • Questions
Problem Set #8
  • Questions