comp_phys_marc

Bonjuour! | comp-phys-marc Get more from comp-phys-marc on Patreon

Welcome to the beginning of my sci-fi posting!

www.patreon.com/posts/bonjuo...

Get more from comp-phys-marc on Patreon Patreon is empowering a new generation of creators. Support and engage with artists and creators as they live out their passions!

I am launching a #Patreon for my fictitious imaginings!

patreon.com/comp_phys_ma...

OQTOPUS

Osaka University's open source #quantum computer operating system project uses the #compiler frontend I wrote during my masters.

So thrilled to enable this!

OQTOPUS share.google/vKxkohbDtIei...

OQTOPUS: Researchers launch open-source quantum computer operating system share.google/9jFpGdLdKgMI...

Physicists disagree wildly on what quantum mechanics says about reality, Nature survey shows First major attempt to chart researchers’ views finds interpretations in conflict.

A Nature survey shows how widely researchers disagree on what quantum mechanics says about reality.

Read the results - and find out what interpretation suits you - at this @nature.com article by @lizziegibney.bsky.social

A run-down of major findings: 🧵
www.nature.com/articles/d41...

One of my professors once explained to me that the appeal of physics, the game we play as physicists, is to find that math which fits with observation and models reality. Pure math is well and good, but doesn’t it miss a certain appeal, something to be measured against?

4/4

We learn in class about the generalized uncertainty principle. This can give us additional uncertainty relations, like the more controversial energy-time relation. But when one thinks of groups and rings more generally, isn’t this just scratching the surface?

3/4

But did you know that a Commutator of a, b in general is [a, b] = a^(−1) b^(−1) a b in the case of a group and [a, b] = ab − ab in the case of a ring? That means it depends on whether you have an additive identity, inverse and product defined for the members of the group, or just multiplicative

2/4

In quantum mechanics, we usually run into the commutator of position (x) and momentum (p): [x, p] = xp − px. This canonical commutation relation gives us Heisenberg’s uncertainty principle.

#science #physics #mathematics

1/4

Love to hear this! I'm writing an engineer into my upcoming sci-fi. :D

Amen and very needed now

Nanofabrication engineer to cook would be a funny career path, which would in some way make some sense.

Geologic Periods

⚒️ Another good geologic xkcd (I chuckled at the Quarternary)!

Although there are some opportunities for expansion at the beginning and end.

The Halo is a part of the spherical component, the spherical region of a spiral galaxy, with a scattering of stars.

The Central Bulge is a dense cloud of stars at the galaxy's centre with a diameter of about 6,500 light years.

3/3

The Spiral Arms are a part of the disc, a spiral pattern of stars, gas and dust.

There is also a Spherical Component, including all matter distributed spherically from the galaxy's centre.

2/3

Galactic Components of the Milky Way

The Milky Way (our galaxy) is made up of the following components.

The Disk includes all matter that is confined to the plane of the galaxy.

#science #physics #astronomy

1/3

The trick is that if an eavesdropper intercepted qubits, measured them and repeated them along their path in step 3, then due to the inherent randomness of the measurement process, some of the repeated values would be corrupted.

5) The choices of basis used by each party are publicized, and the parties discard bits where the bases they used did not match.

6) An eavesdropper can be detected by comparing a subset of the remaining bits.

3) The qubits from the previous step are sent physically to the receiver. This can be done publicly.

4) The receiver measures each qubit in a random basis, recording which bases are used.

1) The sender generates a classical bitstring.

2) The sender prepares a number of qubits matching the length of the bitstring from the previous step, randomly encoding each value from the bitstring in one of two orthonormal bases. The choices of basis are recorded.

Quantum Key Distribution (QKD) is a cryptographic scheme that makes use of quantum physics to ensure provable information-theoretical security. It is also one of the first applications of quantum computing to be both commercial and viable today.

It involves the following steps.

#science #quantum

The Schwarzschild radius is the radius of the event horizon, the point of no return.

If a star with >3M solar masses collapses, no force can stop the collapse, and it becomes a singularity. Around a singularity, with infinite mass density and zero radius, is a “black hole”, from which nothing can escape.

#science #physics #astronomy

Wow I had this very one growing up! So much fun

Now raising a seed round for this idea

qgit

You’ve heard of qjit, but now consider: qgit!

Qgit, the new iteration of git. Every possible changeset is stochastically generated by AI and PRs opened to main for each of them simultaneously.

Software development now consists entirely of choosing what to merge and resolving merge conflicts!

\end{document}

Forgive my playful use of #LaTeX idioms! When will @bsky.app support #LaTeX?

Well done

Von Neumann entropy is a quantum generalization of Shannon entropy.

Here, ρ is a density matrix and cj are complex coefficients describing a (potentially mixed) quantum state. When ρ is a diagonal matrix, the Shannon entropy and Von Neumann entropy are the same!

Here, X is a random variable, the p(x) are probabilities corresponding to the values X can take, such as [0, 1] if b = 2, and b is the base of the units of entropy (such as bits).

\title{Entropy}

Entropy is the degree of randomness or variability in a system. Shannon entropy, proposed by Claude Shannon (the Father of Information Theory), captures how much information can be encoded in a system. I like to think of it as how much variation the system can encode.

#science