QT5201U wiki - User contributions [en]

Control and measurement in the bosonic cQED system

2026-09-18T02:00:35Z

Gracepang:

'''Team members:''' Seungwon Jin, Grace Pang

== Abstract ==
This project characterizes a single superconducting microwave cavity dispersively coupled to a single transmon qubit, using standard circuit QED control and measurement techniques. We review the underlying theory of dispersive coupling and readout, then apply a set of standard measurement protocols to extract the key system parameters (coupling strength, dispersive shift, coherence times) and compare them with theoretical expectations.

== Introduction ==
=== Theoretical Background ===

== Methods ==

== Results ==

== Discussion ==

== Conclusion ==

== References ==

Control and measurement in the bosonic cQED system

2026-09-18T01:52:46Z

Gracepang: Created page with "== Control and Measurement in the Bosonic cQED System == '''Team members:''' Seungwon Jin, Grace Pang === Project Summary === This project characterizes a single superconducting microwave cavity dispersively coupled to a single transmon qubit, using standard circuit QED control and measurement techniques. We review the underlying theory of dispersive coupling and readout, then apply a set of standard measurement protocols to extract the key system parameters (coupling..."

== Control and Measurement in the Bosonic cQED System ==

'''Team members:''' Seungwon Jin, Grace Pang

=== Project Summary ===
This project characterizes a single superconducting microwave cavity dispersively coupled to a single transmon qubit, using standard circuit QED control and measurement techniques. We review the underlying theory of dispersive coupling and readout, then apply a set of standard measurement protocols to extract the key system parameters (coupling strength, dispersive shift, coherence times) and compare them with theoretical expectations.

Main Page

2026-09-14T08:04:22Z

Gracepang: /* Control and measurement in the bosonic cQED system */

<strong>Wiki page for course QT5201U (Quantum control technology) - AY2026/27S1</strong>

This will be the place for documenting projects. To be able to write something to this wiki, we need to create a user login manually. If you have not yet created an account, do let me know - Christian.

'''Next class:''' Mon 17 Aug 2026 in the seminar room S15 level 5.

==Project pages==
===[[Example project title]]===
One sentence, describing what this project is is about.

'''Team members:''' A, B, C

=== [[QKD receiver characterization (Polarization)]] ===

Calibrated polarization-state generator to characterize polarization analysis modules in QKD receivers and rigorously quantify the impact on secure key rates.

'''Team members:''' Elias X. Huber, various AI agents (open to join forces with other humans as well, you can reach me at elias.x.huber[at typical nus sufix]; please note though that I will likely do the experiment at UTown (CREATE Tower), my schedule tends to be a bit inflexible for team-work, and I am a theorist with no lab experience).

=== [[Control and measurement in the bosonic cQED system]] ===
Using control and measurement methods to characterize a dispersively coupled single superconducting cavity and single transmon qubit system, with a thorough review of the theories and experimental techniques behind it.

'''Team members:''' Grace Pang and Seungwon Jin

==Resources==
Some hopefully useful references should go here.
===Recommended literature===
* Bahaa E. A. Saleh, Malvin Carl Teich: Fundamentals of Photonics, Wiley; available as [https://libproxy1.nus.edu.sg/login?url=https://search.ebscohost.com/login.aspx?direct=true&db=nlebk&AN=26193&site=ehost-live&ebv=EB&ppid=pp_Cover e-book in NUS]. Excellent reference book for many optics topics.
===Recorded classes===

{| class="wikitable"
!Date !! Topic !! Description !! Reference

|-
| 17.8.2026
| [https://youtu.be/tUuzyOVIlxk Paraxial ray optics]
| A recap of how to deal with classical ray optics through ABCD matrices
| Saleh, Teich: Fundamentals of Photonics

|-
| 18.8.2026
| [https://youtu.be/lSKFl8u21_w Paraxial wave optics]
| Working towards Gaussian beams found with lasers...
| same as above

|-
| 24.8.2026
| [https://youtu.be/2HZCak7ODlM Optical cavities 1]
| Fabry-Perot, simple 1D dimensional
|
|-

| 25.8.2026
| [https://youtu.be/GEa3ktnrMrg Optical cavities 2]
| Transverse mode structure, optical coating basics
|

|}
Complete playlist: https://www.youtube.com/playlist?list=PLN-Fk1m9cTD4

==Previous version of this course wiki==
* AY2012S2: https://ay2021s2.qt5201.org

== Getting started ==
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