Christoph Hirche
@christophhirche.bsky.social
Jun.-Prof. for Quantum Algorithms and Learning at the Leibniz University Hannover, Germany.
Reposted by Christoph Hirche
Ian George, @christophhirche.bsky.social, Theshani Nuradha, & I have issued an update of our q. Doeblin coefficients paper:
arxiv.org/abs/2503.22823
Main changes consist of an expanded section 8.5 on mixing, indistinguishability, & decoupling times of quantum Markov chains. See attached images
arxiv.org/abs/2503.22823
Main changes consist of an expanded section 8.5 on mixing, indistinguishability, & decoupling times of quantum Markov chains. See attached images
July 8, 2025 at 9:09 AM
Ian George, @christophhirche.bsky.social, Theshani Nuradha, & I have issued an update of our q. Doeblin coefficients paper:
arxiv.org/abs/2503.22823
Main changes consist of an expanded section 8.5 on mixing, indistinguishability, & decoupling times of quantum Markov chains. See attached images
arxiv.org/abs/2503.22823
Main changes consist of an expanded section 8.5 on mixing, indistinguishability, & decoupling times of quantum Markov chains. See attached images
Reposted by Christoph Hirche
Cause for celebration: millions of euros in continued funding for research on photonics, measurements at the quantum frontier and personalised care for hearing loss. #LUH has been granted funding for three Clusters of Excellence and will apply for University of Excellence status.
Outstanding success for LUH: three Clusters of Excellence granted funding
Leibniz University Hannover will apply for University of Excellence status.
www.uni-hannover.de
May 22, 2025 at 3:45 PM
Cause for celebration: millions of euros in continued funding for research on photonics, measurements at the quantum frontier and personalised care for hearing loss. #LUH has been granted funding for three Clusters of Excellence and will apply for University of Excellence status.
Reposted by Christoph Hirche
Slides on "Quantum Doeblin Coefficients: Interpretations and Applications" available here:
zenodo.org/records/1544...
Joint work with Ian George, @christophhirche.bsky.social, and Theshani Nuradha
zenodo.org/records/1544...
Joint work with Ian George, @christophhirche.bsky.social, and Theshani Nuradha
zenodo.org
May 17, 2025 at 6:51 AM
Slides on "Quantum Doeblin Coefficients: Interpretations and Applications" available here:
zenodo.org/records/1544...
Joint work with Ian George, @christophhirche.bsky.social, and Theshani Nuradha
zenodo.org/records/1544...
Joint work with Ian George, @christophhirche.bsky.social, and Theshani Nuradha
New preprint in preparation for ISIT:
With Oxana Shaya,
"Partial orders and contraction for BISO channels"
scirate.com/arxiv/2504.1...
Within the BISO channels the BEC and BSC are extremal in many aspects. We extend this to additional partial orders and show what role contraction plays here.
With Oxana Shaya,
"Partial orders and contraction for BISO channels"
scirate.com/arxiv/2504.1...
Within the BISO channels the BEC and BSC are extremal in many aspects. We extend this to additional partial orders and show what role contraction plays here.
Partial orders and contraction for BISO channels
A fundamental question in information theory is to quantify the loss of information under a noisy channel. Partial orders and contraction coefficients are typical tools to that end, however, they are ...
scirate.com
April 24, 2025 at 2:47 PM
New preprint in preparation for ISIT:
With Oxana Shaya,
"Partial orders and contraction for BISO channels"
scirate.com/arxiv/2504.1...
Within the BISO channels the BEC and BSC are extremal in many aspects. We extend this to additional partial orders and show what role contraction plays here.
With Oxana Shaya,
"Partial orders and contraction for BISO channels"
scirate.com/arxiv/2504.1...
Within the BISO channels the BEC and BSC are extremal in many aspects. We extend this to additional partial orders and show what role contraction plays here.
Reposted by Christoph Hirche
Joint work w/ Ian George, Christoph Hirche @christophhirche.bsky.social, & Theshani Nuradha "Quantum Doeblin Coefficients: Interpretations and Applications":
arxiv.org/abs/2503.22823
Great collaboration & enjoyable project!
Interpretations of q. Doeblin coefficients in attached tables
arxiv.org/abs/2503.22823
Great collaboration & enjoyable project!
Interpretations of q. Doeblin coefficients in attached tables
April 1, 2025 at 3:11 PM
Joint work w/ Ian George, Christoph Hirche @christophhirche.bsky.social, & Theshani Nuradha "Quantum Doeblin Coefficients: Interpretations and Applications":
arxiv.org/abs/2503.22823
Great collaboration & enjoyable project!
Interpretations of q. Doeblin coefficients in attached tables
arxiv.org/abs/2503.22823
Great collaboration & enjoyable project!
Interpretations of q. Doeblin coefficients in attached tables
Thanks for hosting me at Cornell last week, @markwilde.bsky.social !
Great to have @christophhirche.bsky.social visiting us this past week! Attached photos show Christoph leaving quantum information divergence graffiti in the Cornell music studio before our jam session :) (next to the related graffiti I left some weeks ago)
March 10, 2025 at 8:11 AM
Thanks for hosting me at Cornell last week, @markwilde.bsky.social !
Reposted by Christoph Hirche
The next Cornell ECE FIND seminar speaker on March 6 will be @christophhirche.bsky.social:
find.engineering.cornell.edu/seminar/talk...
"New quantum f-divergences and their applications"
Looking forward to it!
find.engineering.cornell.edu/seminar/talk...
"New quantum f-divergences and their applications"
Looking forward to it!
Talk Information 03/06/2025 | FIND
find.engineering.cornell.edu
February 24, 2025 at 7:08 PM
The next Cornell ECE FIND seminar speaker on March 6 will be @christophhirche.bsky.social:
find.engineering.cornell.edu/seminar/talk...
"New quantum f-divergences and their applications"
Looking forward to it!
find.engineering.cornell.edu/seminar/talk...
"New quantum f-divergences and their applications"
Looking forward to it!
New preprint:
"Optimization Driven Quantum Circuit Reduction"
w/ Bodo Rosenhahn & Tobias J. Osborne
Transpiling quantum circuits well to specific gate sets is a hard but important problem near-term. We apply tools from ML to give an effective and scalable approach.
scirate.com/arxiv/2502.1...
"Optimization Driven Quantum Circuit Reduction"
w/ Bodo Rosenhahn & Tobias J. Osborne
Transpiling quantum circuits well to specific gate sets is a hard but important problem near-term. We apply tools from ML to give an effective and scalable approach.
scirate.com/arxiv/2502.1...
February 21, 2025 at 12:41 PM
New preprint:
"Optimization Driven Quantum Circuit Reduction"
w/ Bodo Rosenhahn & Tobias J. Osborne
Transpiling quantum circuits well to specific gate sets is a hard but important problem near-term. We apply tools from ML to give an effective and scalable approach.
scirate.com/arxiv/2502.1...
"Optimization Driven Quantum Circuit Reduction"
w/ Bodo Rosenhahn & Tobias J. Osborne
Transpiling quantum circuits well to specific gate sets is a hard but important problem near-term. We apply tools from ML to give an effective and scalable approach.
scirate.com/arxiv/2502.1...
We're looking for a new addition to our group. Drop me a message if you're interested!
The research group of Prof. Christoph Hirche @christophhirche.bsky.social at the University of Hannover (Germany) is looking for a motivated PhD student.
#QuantumInformationTheory #QuantumComputing
www.quantiki.org/position/phd...
#QuantumInformationTheory #QuantumComputing
www.quantiki.org/position/phd...
PhD position in Quantum Information Theory at the University of Hannover | Quantiki
www.quantiki.org
February 13, 2025 at 3:58 PM
We're looking for a new addition to our group. Drop me a message if you're interested!
Trying this out by announcing our new preprint:
Not too long ago, @marcotomamichel.bsky.social and I gave a new definition of quantum f-divergences. Now, we teamed up with Salman Beigi to dive deeper into their properties and how they relate to previous definitions:
scirate.com/arxiv/2501.0...
Not too long ago, @marcotomamichel.bsky.social and I gave a new definition of quantum f-divergences. Now, we teamed up with Salman Beigi to dive deeper into their properties and how they relate to previous definitions:
scirate.com/arxiv/2501.0...
Some properties and applications of the new quantum $f$-divergences
Recently, a new definition for quantum $f$-divergences was introduced based on an integral representation. These divergences have shown remarkable properties, for example when investigating contractio...
scirate.com
January 8, 2025 at 12:57 PM
Trying this out by announcing our new preprint:
Not too long ago, @marcotomamichel.bsky.social and I gave a new definition of quantum f-divergences. Now, we teamed up with Salman Beigi to dive deeper into their properties and how they relate to previous definitions:
scirate.com/arxiv/2501.0...
Not too long ago, @marcotomamichel.bsky.social and I gave a new definition of quantum f-divergences. Now, we teamed up with Salman Beigi to dive deeper into their properties and how they relate to previous definitions:
scirate.com/arxiv/2501.0...