Thibaut Lacroix
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thibautlacroix.bsky.social
Thibaut Lacroix
@thibautlacroix.bsky.social
Quantum Physicist ⚛️ | Postdoctoral researcher at @qubitulm.bsky.social | PhD from University of St Andrews & Sorbonne 🧑‍🎓 | Agrégé de physique 👨‍🏫

Also on 🐘: @thibautlacroix@mastodon.online

Also on the old fashioned Web 🌍: https://tfmlax.github.io
Pinned
#HelloHE&R 👋

I'm a theoretical physicist working on open quantum systems ⚛️

I'm interested in quantum biology, numerically exact methods to simulate complex quantum system and the surprising effects emerging from system-environment interactions 💥
Reposted by Thibaut Lacroix
📢 Good news: We’ve extended the deadline for FQxI’s How Quantum is Life? essay competition.

You now have until October 29, 2025 to submit your entry.
Remember, there's a $53,000 prize pot up for grabs!

All information here qspace.fqxi.org/competitions...
September 26, 2025 at 9:08 PM
Reposted by Thibaut Lacroix
Le bonheur à portée de main et je m'en aperçois seulement aujourd'hui !

327 pdf de livres des éditions Mir en français accessibles sur archive.org/details/mir-...

Avec bien sûr tous les Landau !
Internet Archive: Digital Library of Free & Borrowable Texts, Movies, Music & Wayback Machine
archive.org
September 20, 2025 at 7:53 AM
Auditeur de longue date de l'excellente émission @sciencecqfd.bsky.social, je suis très heureux d'avoir pu participer celle d'aujourd'hui sur la biologie quantique 📻⚛️🍃
#Podcast Biologie quantique : la nouvelle mécanique du vivant tinyurl.com/2yqykozd à (ré)écouter via @franceculture.fr ! #ScienceCQFD
September 4, 2025 at 3:34 PM
Reposted by Thibaut Lacroix
#Podcast Biologie quantique : la nouvelle mécanique du vivant tinyurl.com/2yqykozd à (ré)écouter via @franceculture.fr ! #ScienceCQFD
September 4, 2025 at 3:13 PM
Reposted by Thibaut Lacroix
"Le processus de photosynthèse est trop efficace pour être dû uniquement à la physique classique. Sont efficacité est presque de 100 %. " - Thibaut Lacroix
September 4, 2025 at 2:37 PM
Reposted by Thibaut Lacroix
"Quand on parle de biologique quantique, on s'intéresse à tous les effets de l'infiniment petit [...] mais à des échelles qui sont celles de la biologie et qui peuvent avoir des conséquences sur les fonctions des êtres vivants." - Thibaut Lacroix
September 4, 2025 at 2:04 PM
Reposted by Thibaut Lacroix
[RDV 16h !] Accrochez vos ceintures, aujourd'hui on va parler de biologie quantique : comment des phénomènes quantiques peuvent-ils avoir des effets sur le comportement de dans certains organismes ? tinyurl.com/2yqykozd 🔬🌿🕊️
Avec @thibautlacroix.bsky.social, Alex Chin et Margaret Ahmad #ScienceCQFD
September 4, 2025 at 10:04 AM
Reposted by Thibaut Lacroix
@cnrsecologie.bsky.social regrette profondément l'adoption de cette loi à la vision court-termiste & ses conséquences graves sur l’environnement, qui méprise santé & bien-être de la population & le rôle des espèces sauvages dans la prod. agricole. La communauté scientifique n'a pas été entendue.
Le Parlement a définitivement adopté mardi la proposition de loi agricole Duplomb-Menonville, comprenant entre autres une mesure décriée de réintroduction sous conditions d'un pesticide néonicotinoïde, et présentée comme une réponse à la colère agricole de 2024.
July 9, 2025 at 8:38 AM
Really happy to share our last paper in @commsphys.nature.com where we give a new derivation of Markovian and non-Markovian collision models using techniques of chain mapping that enabled us to characterise all their sources of error when used as a numerical method!
Quantum collision models are central in quantum thermo, open systems and quantum simulations but they lack a comprehensive error certification. In our new paper, we elevate collision models to numerically exact methods and enhance their reliability #Quantum

doi.org/10.1038/s420...
Making quantum collision models exact - Communications Physics
Quantum collision models are pivotal for simulating open quantum systems, yet lack comprehensive error certification. The authors analytically derive Markovian and non-Markovian collision models from ...
doi.org
July 3, 2025 at 7:53 AM
Reposted by Thibaut Lacroix
New preprint is out on ArXiv ✨
In this work, we boost our numerically exact method and simulated electronic dynamics of pigment-protein complexes based on full microscopic models, showing picosecond-lived inter-excitonic coherences 🌱
#QuantumBiology #Photosynthesis

👉 arxiv.org/abs/2503.17282
Full Microscopic Simulations Uncover Persistent Quantum Effects in Primary Photosynthesis
The presence of quantum effects in photosynthetic excitation energy transfer has been intensely debated over the past decade. Nonlinear spectroscopy cannot unambiguously distinguish coherent electroni...
arxiv.org
March 25, 2025 at 9:05 AM
Reposted by Thibaut Lacroix
Operator-basis Matrix Product State formalism for optical circuits
https://arxiv.org/pdf/2502.01737
Dario Cilluffo, Matthias Kost, Nicola Lorenzoni, Martin B. Plenio
https://arxiv.org/abs/2502.01737
arXiv abstract link
arxiv.org
February 5, 2025 at 11:20 AM
Reposted by Thibaut Lacroix

Check out this #Julia package MPSDynamics.jl to simulate open quantum systems with tensor networks

#TensorNetworks #QuantumSoftware
Want to simulate open quantum systems but don't know how?

Check out our #Julia package MPSDynamics.jl to simulate exactly finite temperature non-Markovian dynamics with bosonic, fermionic, and qubits environments (even several environments!) with tensor networks 🔵-🟣-🔴-🟠
github.com/shareloqs/MP...
GitHub - shareloqs/MPSDynamics.jl: Tensor network simulations for finite temperature, open quantum system dynamics
Tensor network simulations for finite temperature, open quantum system dynamics - shareloqs/MPSDynamics.jl
github.com
February 3, 2025 at 9:26 AM
Want to simulate open quantum systems but don't know how?

Check out our #Julia package MPSDynamics.jl to simulate exactly finite temperature non-Markovian dynamics with bosonic, fermionic, and qubits environments (even several environments!) with tensor networks 🔵-🟣-🔴-🟠
github.com/shareloqs/MP...
GitHub - shareloqs/MPSDynamics.jl: Tensor network simulations for finite temperature, open quantum system dynamics
Tensor network simulations for finite temperature, open quantum system dynamics - shareloqs/MPSDynamics.jl
github.com
February 3, 2025 at 9:18 AM
Reposted by Thibaut Lacroix
Trini's first paper is out in print in Quantum no less quantum-journal.org/papers/q-202.... Learn how to achieve Heisenberg scaling sensitivity in a central spin model without state preparation - just measure the central spin repeatedly. #quantum #metrology
Unlocking Heisenberg Sensitivity with Sequential Weak Measurement Preparation
T. B. Lantaño, Dayou Yang, K. M. R. Audenaert, S. F. Huelga, and M. B. Plenio, Quantum 9, 1590 (2025). We propose a state preparation protocol based on sequential measurements of a central spin couple...
quantum-journal.org
January 31, 2025 at 10:58 PM
#HelloHE&R 👋

I'm a theoretical physicist working on open quantum systems ⚛️

I'm interested in quantum biology, numerically exact methods to simulate complex quantum system and the surprising effects emerging from system-environment interactions 💥
January 20, 2025 at 6:00 PM
Reposted by Thibaut Lacroix
✨ Hello, Bluesky! ✨
We’re thrilled to join this amazing platform and connect with the scientific community in new and exciting ways. Follow us here at @qubitulm for cutting-edge physics research, inspiring collaborations, and all the latest from our institute! #Quantum
January 17, 2025 at 10:54 AM