C. Jess Riedel

C. Jess Riedel

Physics of Information Group
IBM Research

E-Mail: jessriedel at gmail dot com

CV | Blog | IBM page | arXiv Papers

Best published idea

CJR, "Direct Detection of Classically Undetectable Dark Matter through Quantum Decoherence", Phys. Rev. D 88, 116005 (2013).

[arXiv:1212.3061][Slides (Perimeter)][Video (Perimeter)][FAQs (Blog)]

Selected work

M. Zwolak, CJR, and W. Zurek, "Amplification, Redundancy, and the Quantum Chernoff Information", Phys. Rev. Lett. 112, 140406 (2014)

[arXiv:1312.5373][Video (Zwolak, IBM)]

CJR, "Decoherence and the Quantum Detection of Classically Undetectable Phenomena."

[arXiv:1205.3195][Slides (Waterloo)][Video (Waterloo)]

CJR, W. Zurek, and M. Zwolak, "The Objective Past of a Quantum Universe - Part 1: Redundant Records of Consistent Histories".

[arXiv:1312.0331][Slides (IBM)][Video (IBM)]

CJR, "The Standard Quantum Limit Arising from a Preferred Basis".

[pre-preprint PDF]

CJR, "Evidence for Gravitons from Decoherence by Bremsstrahlung".


CJR, "Local Records and Global Entanglement: A Unique Multi-Partite Generalization of the Schmidt Decomposition".


CJR, Wojciech H. Zurek, and Michael Zwolak, "The Rise and Fall of Redundancy in Decoherence and Quantum Darwinism," New J. Phys. 14, 083010 (2012).

[arXiv:1205.3197][Slides (thesis defense)]

CJR and Wojciech H. Zurek, "Quantum Darwinism in an Everyday Environment: Huge Redundancy in Scattered Photons," Phys. Rev. Lett. 105, 020404 (2010).


(Collaborators: Charles H. Bennett, Michael Zwolak, Wojciech H. Zurek.)

Online Persona

HackerNews, StackExchange (Physics.SE, MathOverflow), 80k Hours, foreXiv, Google Scholar, arXiv.



Fast partial trace of multi-qubit density matrix: [Mathematica Notebook] [Plain ASCII].

Fast, formula-based computation of Gaussian integrals: [Mathematica Notebook].


Alternatives for common applications: alternativeTo.

Multiple app installers: ninite.

Windows software and services I use: Notepad++, Dropbox, Gmail Offline, Google Calendar Offline, Evernote, Insomnia, GIMP, 7-zip, IrfanView, WinDirStat, Mathematica, WinSCP, Zotero with ZotFile, FoxIt PDF Reader, Wordpress.


(Quicktime .mov files allows one to pan and zoom)

Cabezon peak, NM, just before solar eclipse (2012-5-20):
[MOV (large)] [MOV (med)] [MOV (small)] [JPEG].

Inside the adventure bus (2012-7-22):
[MOV (large)] [MOV (med)] [MOV (small)] [JPEG].

Former institutions

Los Alamos National Lab: CNLS & T-4 (2009-2012)
UC Santa Barbara Physics (2007-2012)
Princeton Physics (2003-2007)
Thomas Jefferson HSST (1999-2003)

Mailing address

Office: Room 37-130, Main Building (801)
Address: IBM Watson Research Center
1101 Kitchawan Road
Yorktown Heights, NY 10598