@qubobs
Quantum computing, explained using playful interactive objects. Nous expliquons le calcul quantique avec des objets ludiques. Developed at IRIF, Université Paris Cité https://qubobs.irif.fr Objects by @louvettier.bsky.social
By shifting the wave function we can get cancellation and amplification effects, similar to what is used for signal processing and sound engineering. These effects, which require additional computation on a classical computer, can be put to good use in quantum algorithms.
Quantum operations or gates are reversible.
A few photos from our QIP poster.
Qubits are quantum binary systems that have an associated wave function.
Some photos from the poster session. Thanks to everyone who stopped by!
Setting up poster #186 at #QIP2026
A hand touches a device representing a sine wave
How can we explain to a broad audience how quantum mechanics is used for computation? Comme see our poster at QIP.
#186 at Tuesday's poster session.
Passez voir notre installation tactile et musicale et apprenez à manipuler les circuits quantiques à la Journée sur la quantique le 21 janvier au centre Lumen à Saclay.
quantip.org/espace-grand...
Working hard on our quantum paper technologies. Come see our poster at the upcoming QIP!
-> Tuesday, poster #186
Quantum leaps are discrete beacuse they behave like stationary waves.
Here we have 3 qubits on a single saxophone!
(Pierre-Stéphane Meugé at Studio Sequenza)
His book "Mathematica" is a real eye-opener. David Bessis describes accurately and vividly the way we perceive and manipulate mathematical objects. Colleagues who read it also felt he put into words what they had not been able to formulate about the mathematical process. Highly recommended.
The next step was taken by De Broglie. He asked himself how the discrete states could be understood by the aid of the current concepts, and hit on a parallel with stationary waves, as for instance in the case of the proper frequencies of organ pipes and strings in acoustics. True, wave actions of the kind here re- quired were unknown; but they could be constructed,
and their mathematical laws formulated, employing Planck's constant h. De Broglie conceived an electron revolving about the atomic nucleus as being connected with such a hypothetical wave train, and made intel- ligible to some extent the discrete character of Bohr's "permitted" paths by the stationary character of the corresponding waves.
Here's that quote from Einstein's 1940 Science paper, "Considerations concerning the Fundaments of Theoretical Physics".
Who knew? A quote from David Sulzer’s Math Music and Mind on how harmonics in music inspired de Broglie’s view of quanta.
It's easier to understand quantum algorithms if you think of qubits as waves with an amplitude and a phase. Come play with our music installation u-paris.fr/sciences/%C3...
⭐Fais voir ta science⭐
Le rdv incontournable de la médiation scientifique à la Faculté des Sciences d'@upcite.bsky.social !
13 stands + 1 spectacle + 1 cocktail
📆Jeudi 20/11, de 12h à 20h
📍Hall A du Bâtiment des Grands Moulins
10 esplanade P. Vidal-Naquet 75013 Paris
u-paris.fr/sciences/%C3...
Our videos are now online. Check them out here qubobs.irif.fr/videos/
Had an amazing time at the Quantum day organized by EPFL. Special thanks to the organizers and all the student volunteers.
QUantum gates
CNOT gate
We'll be at EPFL in Lausanne on Saturday. Join us and play with our new quantum gates and circuits
www.epfl.ch/research/dom...
Mini-ions at it again, this time, catching the wave (function).
The mini-ions are back.
Highly recommended!
So What Do We Know QC To Be Good For?
- Simulating quantum physics and chemistry
- Breaking current public-key encryption (RSA, DH, ECC)
- Eventually, modest (square-root) speedups from Grover
- We’ll have to get lucky for most other applications!
(The world has been systemically lied to about this)
Make that a polylog factor and I'm in.
Le Palais de la Découverte est clairement menacé. Voici une petite vidéo où j'essaye de vous expliquer pourquoi, à mon avis, ce serait une vraie erreur de ne pas le réouvrir.
youtube.com/shorts/8adIA...
Follow them on instagram www.instagram.com/sauvonslepal...
The Palais de la Découverte is facing possible eviction from its historical location in the center of Paris. Consider signing the petition in support of this beloved institution devoted to sharing science with the general public www.change.org/p/sauvons-le...
Go with the vibe function.
In any execution, there is only a small probability that your marble has reached the exit of the maze. The same goes for quantum algorithms. Parallel executions don't help unless you can amplify the probability of getting a correct answer in the end. This is where much of the power of quantum lies.
If you want to describe the location of a marble in a maze at a given time, you could describe it as being in all possible locations, with some probability. This sounds a lot like "massive parallelism", but there's nothing strange or quantum about it.
To demystify the notion that quantum computing owes its advantage to "massive parallelism" I find it useful to compare it to a random walk in a maze. A marble can explore many paths in the maze...
