Teruaki Nagasawa
@teruaki-nagasawa.bsky.social
Ph.D. student at Department of Mathematical Informatics, Nagoya University, Japan
https://sites.google.com/view/teruaki-nagasawa/home?authuser=0
https://sites.google.com/view/teruaki-nagasawa/home?authuser=0
Reposted by Teruaki Nagasawa
Quantum Toolbox (15): Relating Relative Entropy and Fidelity (1/6):
January 15, 2026 at 2:05 AM
Quantum Toolbox (15): Relating Relative Entropy and Fidelity (1/6):
Reposted by Teruaki Nagasawa
Quantum Toolbox (14): Quantum Pinsker Inequality (1/6)
December 30, 2025 at 6:22 AM
Quantum Toolbox (14): Quantum Pinsker Inequality (1/6)
Reposted by Teruaki Nagasawa
Quantum Toolbox (13): Matrix Geometric Mean (1/7)
December 4, 2025 at 7:02 AM
Quantum Toolbox (13): Matrix Geometric Mean (1/7)
Reposted by Teruaki Nagasawa
Reposted by Teruaki Nagasawa
Interested in entanglement theory for systems with infinitely many degrees of freedom? Take a look at my PhD thesis, now available on the arXiv 🥳 arxiv.org/abs/2510.07563
Entanglement in von Neumann Algebraic Quantum Information Theory
In quantum systems with infinitely many degrees of freedom, states can be infinitely entangled across a pair of subsystems, but are there different forms of infinite entanglement? To understand entang...
arxiv.org
October 13, 2025 at 9:01 AM
Interested in entanglement theory for systems with infinitely many degrees of freedom? Take a look at my PhD thesis, now available on the arXiv 🥳 arxiv.org/abs/2510.07563
Reposted by Teruaki Nagasawa
Quantum Toolbox (11): Generalized Operator Schwarz Inequality (1/6)
October 16, 2025 at 1:49 AM
Quantum Toolbox (11): Generalized Operator Schwarz Inequality (1/6)
Reposted by Teruaki Nagasawa
Quantum Toolbox (9): Sample Complexity Lower Bounds via Mutual Information (1/6)
September 10, 2025 at 11:03 AM
Quantum Toolbox (9): Sample Complexity Lower Bounds via Mutual Information (1/6)
Reposted by Teruaki Nagasawa
Quantum Toolbox (10): Uhlmann's Theorem (1/6)
September 29, 2025 at 2:02 AM
Quantum Toolbox (10): Uhlmann's Theorem (1/6)
Reposted by Teruaki Nagasawa
Quantum Toolbox (8): Hadamard's Three-Lines Theorem (1/6)
August 1, 2025 at 10:36 AM
Quantum Toolbox (8): Hadamard's Three-Lines Theorem (1/6)
Reposted by Teruaki Nagasawa
#Quantum #QIP2025
The team @qip2025.bsky.social has uploaded the QIPv2025 talks
www.youtube.com/@QIP2025
Enjoy rewatching your favorites!
The team @qip2025.bsky.social has uploaded the QIPv2025 talks
www.youtube.com/@QIP2025
Enjoy rewatching your favorites!
QIP2025
www.youtube.com
July 27, 2025 at 11:02 PM
#Quantum #QIP2025
The team @qip2025.bsky.social has uploaded the QIPv2025 talks
www.youtube.com/@QIP2025
Enjoy rewatching your favorites!
The team @qip2025.bsky.social has uploaded the QIPv2025 talks
www.youtube.com/@QIP2025
Enjoy rewatching your favorites!
Reposted by Teruaki Nagasawa
Quantum Toolbox (7): Continuity of the von Neumann Entropy (1/6)
July 5, 2025 at 1:23 PM
Quantum Toolbox (7): Continuity of the von Neumann Entropy (1/6)
Reposted by Teruaki Nagasawa
Thanks to @phys.org.web.brid.gy for covering our recent work with @stotti-alex.bsky.social and @lvanluijk.bsky.social on embezzlement of entanglement in critical systems:
phys.org/news/2025-06...
Paper: www.nature.com/articles/s41...
phys.org/news/2025-06...
Paper: www.nature.com/articles/s41...
Universal embezzlers naturally emerge in critical fermion systems, study finds
Embezzlement of entanglement is an exotic phenomenon in quantum information science, describing the possibility of extracting entanglement from a resource system without changing its quantum state. In...
phys.org
June 23, 2025 at 6:57 AM
Thanks to @phys.org.web.brid.gy for covering our recent work with @stotti-alex.bsky.social and @lvanluijk.bsky.social on embezzlement of entanglement in critical systems:
phys.org/news/2025-06...
Paper: www.nature.com/articles/s41...
phys.org/news/2025-06...
Paper: www.nature.com/articles/s41...
Reposted by Teruaki Nagasawa
Quantum Toolbox (6): Hoeffding's Inequality (1/7)
June 11, 2025 at 6:58 AM
Quantum Toolbox (6): Hoeffding's Inequality (1/7)
Reposted by Teruaki Nagasawa
Quantum Toolbox (5): Cauchy-Schwarz Inequality (1/6)
June 6, 2025 at 8:15 AM
Quantum Toolbox (5): Cauchy-Schwarz Inequality (1/6)
Reposted by Teruaki Nagasawa
Quantum Toolbox (4): Jordan's Lemma (1/6)
May 23, 2025 at 12:33 PM
Quantum Toolbox (4): Jordan's Lemma (1/6)
Reposted by Teruaki Nagasawa
Quantum Toolbox (1): Jensen's Inequality (1/6)
April 24, 2025 at 9:35 AM
Quantum Toolbox (1): Jensen's Inequality (1/6)
Reposted by Teruaki Nagasawa
My paper Energy-limited quantum dynamics was published in CMP! 🎉
doi.org/10.1007/s002...
I'll do a short thread when I find the time for it.
doi.org/10.1007/s002...
I'll do a short thread when I find the time for it.
Energy-Limited Quantum Dynamics - Communications in Mathematical Physics
We consider quantum systems with energy constraints relative to a reference Hamiltonian. In general, quantum channels and continuous-time dynamics need not satisfy energy conservation. Physically mean...
doi.org
May 8, 2025 at 4:40 PM
My paper Energy-limited quantum dynamics was published in CMP! 🎉
doi.org/10.1007/s002...
I'll do a short thread when I find the time for it.
doi.org/10.1007/s002...
I'll do a short thread when I find the time for it.
Reposted by Teruaki Nagasawa
Quantum Toolbox (2): Schur-Weyl Duality (1/6)
May 4, 2025 at 12:22 PM
Quantum Toolbox (2): Schur-Weyl Duality (1/6)
Reposted by Teruaki Nagasawa
The second law of thermodynamics states that a quantity called entropy is on the rise, indicating that the universe is predisposed to disorder. But the idea of entropy is evolving. www.quantamagazine.org/what-is-entr...
What Is Entropy? A Measure of Just How Little We Really Know. | Quanta Magazine
Exactly 200 years ago, a French engineer introduced an idea that would quantify the universe’s inexorable slide into decay. But entropy, as it’s currently understood, is less a fact about the world th...
www.quantamagazine.org
December 13, 2024 at 3:38 PM
The second law of thermodynamics states that a quantity called entropy is on the rise, indicating that the universe is predisposed to disorder. But the idea of entropy is evolving. www.quantamagazine.org/what-is-entr...
Reposted by Teruaki Nagasawa
Teruaki Nagasawa, Eyuri Wakakuwa, Kohtaro Kato, Francesco Buscemi
Macroscopic states and operations: a generalized resource theory of coherence
https://arxiv.org/abs/2504.12738
Macroscopic states and operations: a generalized resource theory of coherence
https://arxiv.org/abs/2504.12738
April 18, 2025 at 6:38 AM
Teruaki Nagasawa, Eyuri Wakakuwa, Kohtaro Kato, Francesco Buscemi
Macroscopic states and operations: a generalized resource theory of coherence
https://arxiv.org/abs/2504.12738
Macroscopic states and operations: a generalized resource theory of coherence
https://arxiv.org/abs/2504.12738
Reposted by Teruaki Nagasawa
A complete theory of the Clifford commutant
scirate.com/arxiv/2504.1...
The Clifford group is ubiquitous in quantum information science, with applications in benchmarking, quantum error correction and learning algorithms. Understanding which operators commute with is a powerful tool.
scirate.com/arxiv/2504.1...
The Clifford group is ubiquitous in quantum information science, with applications in benchmarking, quantum error correction and learning algorithms. Understanding which operators commute with is a powerful tool.
April 17, 2025 at 5:19 AM
A complete theory of the Clifford commutant
scirate.com/arxiv/2504.1...
The Clifford group is ubiquitous in quantum information science, with applications in benchmarking, quantum error correction and learning algorithms. Understanding which operators commute with is a powerful tool.
scirate.com/arxiv/2504.1...
The Clifford group is ubiquitous in quantum information science, with applications in benchmarking, quantum error correction and learning algorithms. Understanding which operators commute with is a powerful tool.
Reposted by Teruaki Nagasawa
Thank you very much to everyone at GIQ.
March 23, 2025 at 2:56 PM
Thank you very much to everyone at GIQ.
Reposted by Teruaki Nagasawa
This week We had two nice seminars: Teruaki Nagasawa (Nagoya U) discussed Macroscopic states and operations: a generalized resource theory of coherence.
Ricard Puig (EPFL) examined Barren plateaus & warm starts, shedding light on quantum loss landscapes and effective training strategies for VQA.
Ricard Puig (EPFL) examined Barren plateaus & warm starts, shedding light on quantum loss landscapes and effective training strategies for VQA.
March 22, 2025 at 8:06 PM
This week We had two nice seminars: Teruaki Nagasawa (Nagoya U) discussed Macroscopic states and operations: a generalized resource theory of coherence.
Ricard Puig (EPFL) examined Barren plateaus & warm starts, shedding light on quantum loss landscapes and effective training strategies for VQA.
Ricard Puig (EPFL) examined Barren plateaus & warm starts, shedding light on quantum loss landscapes and effective training strategies for VQA.
