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QM Probability Program
written by Wolfgang Christian
The QM Probability program displays the time evolution of the position-space wave function and the associated probability density.  The default wave function is the n = 5 state in a ramped infinite square well.  Additional states and other potential energy functions can be specified using the Display | Switch GUI menu item.

QM Probability is one of 18 Open Source Physics programs that model time-dependent quantum mechanics using an energy eigenstate expansion. It is distributed as a ready-to-run (compiled) Java archive.  Double clicking the qm_probability.jar file will run the program if Java is installed.  Other programs provide additional visualizations.  They can be found by searching ComPADRE for Open Source Physics, OSP, or Superposition.

Please note that this resource requires at least version 1.5 of Java.
2 supplemental documents are available
Subjects Levels Resource Types
Quantum Physics
- Bound State Systems
- General
- Probability, Waves, and Interference
- Upper Undergraduate
- Graduate/Professional
- Lower Undergraduate
- Instructional Material
= Interactive Simulation
Intended Users Formats Ratings
- Learners
- Educators
- Professional/Practitioners
- application/java
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Access Rights:
Free access
© 2008 Wolfgang Christian
Additional information is available.
OSP, Open Source Physics, energy eigenstates, probability density, quantum mechanics, superposition, wave packets
Record Creator:
Metadata instance created April 7, 2008 by Mario Belloni
Record Updated:
March 15, 2010 by Lyle Barbato
Last Update
when Cataloged:
April 1, 2008
Other Collections:

ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
W. Christian, Computer Program QM PROBABILITY PROGRAM, Version 1.0 (2008), WWW Document, (
W. Christian, Computer Program QM PROBABILITY PROGRAM, Version 1.0 (2008), <>.
APA Format
Christian, W. (2008). QM Probability Program (Version 1.0) [Computer software]. Retrieved March 19, 2018, from
Chicago Format
Christian, Wolfgang. "QM Probability Program." Version 1.0. (accessed 19 March 2018).
MLA Format
Christian, Wolfgang. QM Probability Program. Vers. 1.0. Computer software. 2008. Java 1.5. 19 Mar. 2018 <>.
BibTeX Export Format
@misc{ Author = "Wolfgang Christian", Title = {QM Probability Program}, Month = {April}, Year = {2008} }
Refer Export Format

%A Wolfgang Christian
%T QM Probability Program
%D April 1, 2008
%O 1.0
%O application/java

EndNote Export Format

%0 Computer Program
%A Christian, Wolfgang
%D April 1, 2008
%T QM Probability Program
%7 1.0
%8 April 1, 2008

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Citation Source Information

The AIP Style presented is based on information from the AIP Style Manual.

The APA Style presented is based on information from APA Electronic References.

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