Physics 581 Fall 2016

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: Tues. and Thurs. 2:00-3:15 PM, P&A Room 5

Office Hours: Wed. TBA

 
Teaching Assistant: Ezad Shojaee
 

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, Tuesdays.

 

 


 

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.

 

III. Continuous measurement

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

            B. Quantum Monte-Carlo wave functions.

            C. The stochastic Schrödinger equation.

 

IV. Fundamental Paradigms of quantum optics

            A. Cavity QED (from atoms to superconductors)

            B. Ion traps.

            C. Cold neutral atom ensembles.

            D. Correlated photons and squeezed states.

 

V. Applications in quantum information processing

            A. Quantum communication

            B. Quantum computation

            C. Quantum metrology

 


 

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

 

Aug. 23

 

Review: Particles, Waves, Coherence, Density Matrix

Lecture 1

Podcast 1

 

Aug. 25

 

No Lectue: Travel

Review

Lecture 15 - QO I

 

Aug. 30

 

Review: Quantum Fields, Nonclassical Light - Glauber Theory

 

Lecture 16 - QO I

Podcast 2

 

Sept. 1

 

Continuation

Podcast 3

 

Sept. 6

 

Continuous variables: Squeezed states, general properties

 

Lecture 2

Podcast 4

 

Sept. 8

Continuation

Podcast 5

 

Sept. 13

Quadratures, shot noise, and homodyne detection

Podcast 6

 

Sept. 14

Introduction to nonlinear optics and the generation of nonclassical light

Lecture 3

Podcast 7

 

Sept. 15

Production of Squeezed Sates

Parametric Downconversion

Podcast 8

 

Sept. 20

 

Quasiprobability functions

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

 

Lecture 4a

Podcast 9

 

Sept. 22

 

Continuation

 

Podcast 10

 

Sept. 27

 

Continuation

 

Podcast 11

 

Sept. 29

 

Tensor product structure and entanglement

 

Lecture 5

Podcast 12

 

Oct. 4

 

Schmidt decomposition

 

Podcast 13

 

Oct. 6

 

Entanaglement in quantum optics - particles and waves

 

Lecture 6

Podcast 14

 

Oct. 11

 

 

Twin photon pairs and two-mode squeezing

 

Podcast 15

 

Oct. 12

 

 

Tests of Bells Inequalities in Quantum Optics

 

Phys521 Lecture 26

Podcast 16

 

Oct. 13

 

Fall Break

 

 

Oct. 18

 

 

Intro to open quantum systems:

Quantum operations, CP maps, Kraus Representation

Lecture 7

Caves Lecture

Podcast 17

 

Oct. 20

 

Irreverisble bipartite system-reservoir interaction.

Markov approximation - Lindblad Master Equation

 

Lecture 8

Podcast 18

 

Oct. 25

 

Continuation

Podcast 19

 

Oct. 27

 

Examples of Master Equation Evolution:

Damped two-level atom, damped SHO

 

Lecture 9

Podcast 20

 

Nov. 1

 

Continuation

 

Podcast 21

 

Nov. 3

 

Fokker-Planck Equation and Decoherence

Podcast 22

 

Nov. 8

 

Heisenberg-Langevin formulation of open quantum systems

Fluctuation-dissipation

Lecture 10

Podcast 23

 

Nov. 10

 

Continuation

Podcast 24

 

Nov. 15

Quantum Trajectories I

Measurement theory

Lecture 11

Molmer 1

Podcast 25

 

Nov. 17

Quantum Trajectories II

Quantum Monte-Carlo Wave Function Algorithm

Lecture 12

Molmer 2

Podcast 26

 

Nov. 22

 

Continuation

 

Molmer 3

Molmer 4

Podcast 27

 

 

Nov. 24

 

Thanksgiving

 

 

Nov. 29

 

Quantum Trajectories III

Different Unravelings of the Master Equation

 

Lecture 13

Podcast 28

 

Dec. 1

 

Continuation

 

Podcast 29

 

Dec. 6

The Stochastic Schrodinger Equation.

Quantum State Diffusion

Lecture 14

Podcast 30

 

Dec. 8

QND measurement and and the Stochastic Schrodinger Equation.

Case-Study: Spin Squeezing

Lecture 15

Podcast 31

 


 

 

Problem Sets

Problem Set #1

Problem Set #2

Problem Set #3

Problem Set #4
Final Project