On 18 August, the Swedish government unveiled Sweden’s first national strategy for quantum technology. The strategy identifies WACQT, Chalmers NextLabs, and Chalmers’ research infrastructures as national strengths in the field, while emphasizing the need for stronger national coordination in quantum technology, fully aligned with the Swedish Center for Quantum Technology that Chalmers is establishing together with five other universities ... read the full announcement here:

https://www.chalmers.se/en/current/news/mc2-a-swedish-strategy-for-quantum-technology-now-in-place/

u/chalmers

This material serves as a bridge from operator formalism to matrix mechanics.
I hope this helps those who are learning quantum mechanics for the first time.

I was solving this question and I loved it
(You can try if you want to)

The answer is (2)

The solution is by equation the radial wave function equation to zero, then finding the values of x as 1, 2, 6 and then substituting it in x=2r/a

On solving it we get to know there are 3 possible values of "x" that are 1, 2, 6
which means n-l-1=3
we also know that since at x=0, the value of the equation is not Zero and therefore there is electron probability at the centre, Therefore it's a "s" orbital

so it is obv 4s as it has 3 radial nodes

The minimum distance of the Radial node is a/2 which simply shouldn't be possible right??

Because how can a Radial node or probability of electron be Zero before the "first Bohr orbit" that is 1s

The solution a/2 means there is a radial node before the 1s orbit, But how can a node or 4s exist before 1s? It will face shielding and we all know 4s is an outer orbital and it also has higher energy

I would love if someone could solve this doubt of Quantum Physics

Any thoughts?

An electron is supposed to be indivisible. It carries one fundamental unit of electric charge, and every electron is exactly the same.

But under extreme conditions, large numbers of electrons act together and give rise to new quantum objects called quasiparticles. These act as if they carry only a fraction of an electron's charge, making them one of the strangest phenomena in modern physics.

u/EPFL researchers have developed a graphene device that measures the tiny, fractional electric charges carried by some of the strangest objects in quantum physics.

Read the full article: https://actu.epfl.ch/news/how-do-you-measure-one-third-of-an-electron-4/

Am I right if I say that this paper proposes a new and much less laborious way to experimentally test whether the device under study behaves in a quantum way or not. It could be used with electrons or any spin-1/2 fermion, or even with photons if we use horizontal and vertical polarizations... And it's interesting how a Quantum Walk, diffusive by nature, ends up localized in scars (for certain values of the original parameters). It is also a quantum chaos model that doesn't originate from a classical Hamiltonian of a chaotic system that is subsequently quantized...

Selon la théorie d’un multivers inflationnaire,dans laquelle des « univers-bulles »naîtraient dans notre univers, la masse de ces univers ne devraient pas courber l’espace temps ? Je ne suis pas un pro de physique donc restez indulgent dans vos critiques svp

i am trying to invest in purely only quantum because im just a freak and want to have no diversity besides diffrent quantum company’s.the upside is just to high and im young i got nothing to lose if i invest a lot into something that dont work out shit happens im willing to take the risk. i like post quantum stocks like arqq and btq but haven’t bought in yet and want to know what others think about stocks like INFQ ARQQ & BTQ or other suggestions they might have. i like pick and shovel’s approach towards quantum as well so anything you think could be the next play just let me know. im strictly only in IONQ LAES and QBTS right now but really want to diversify. im in college coming up at 21 years of age and make decent money on the side so it don’t necessarily haveh to be cheaper stocks .

This material covers the algebraic formulation of ladder operators and their explicit matrix representations through detailed examples.

Correction for Page 48: An imaginary unit 'i' was inadvertently omitted during the derivation of the momentum operator. The corrected equation should read: a† - a = -i * √(2 / m ħ ω) p

Due to the strict 10-image upload restriction on Reddit, the subsequent mathematical solutions and the final substitution step have been truncated. I apologize for the abrupt conclusion of the document.

J’ai une question : si on envoie une particule intriquée à une autre particule au delà de l’horizon des événements d’un trou noir, que devient l’autre particule ? Est elle affectée ?

I completed my BTech in Engineering Physics and have been working as a Data Scientist for 1 year. I’m interested in quantum physics and now want to pursue an MS in Quantum Technology/Quantum Computing.

I have an AI research project and am currently doing a self-project on quantum state preparation. I’m not sure if my profile is suitable for this field.

Could you suggest some good, moderate/reachable universities in the UK, France, Germany, Netherlands, or elsewhere where I’d have a fair chance?

Starting August 22, the same undergraduate course as the one offered at Georgetown University will be available on edX. It is an instructor led class, and I am the instructor. It is an 18 week course. While the official prerequisites do require calculus and linear algebra, the course itself does not use very much of this, so if you have a strong high-school math training you should be able to work through it, especially if you use the alternative treatment in Quantum Mechanics Done Right for topics that use calculus. It teaches quantum mechanics in a representation-independent form, emphasizing operators and states and is a spins-first, photons-second curriculum. If you join the class, please be sure to send me a note in the forum discussion. The class is free for auditors, and charges a modest fee (when compared to Georgetown tuition) for a certificate. I will be participating in the course throughout the full 18 weeks unlike most MOOC instructors. I am also adding suggested problem sets for auditors in this run of the course. To enroll, go to https://www.edx.org/learn/quantum-physics-mechanics/georgetown-university-quantum-mechanics

Hello everyone! I just graduated with a Computer Science degree currently I have one published paper in AI and two in quantum computing currently in the publishing process. I have also done a math thesis project on relativistic quantum mechanics and TAed QC courses multiple times.

Now, I have heard that it is not possible to jump into a PhD directly with this kind of background since the pool is very saturated right now. However, I have heard that china is doing a great work in the field and that some of their PhD programs in QC are really good. Is that true? and would you recommend it? most European programs require a masters program and I do not have the funds to go into them without a full scholarship which are very scarce for international students (already got rejected too much from the US).

I would love to hear your thoughts!

People all over Reddit ask how much math do you need to be ready to learn quantum mechanics. In spite of all the answers to the contrary, you only need high school level math.

Using a representation-independent approach, you can master quantum mechanics through graduate-level and beyond. I know it sounds crazy, but it is not.

I wrote an open-access textbook, Quantum Mechanics Done Right, to teach it exactly this way. Springer just published it and you can download here.

In less than one month, it has surpassed 133,000 chapter downloads. It was primarily written as an alternative for self-learners and students who are stuck with traditional texts. Nevertheless, it will teach new things to all quantum mechanics at any level of expertise. I am the author, so if you have any questions about the approach, just ask in the comments!