#Quantum simulation

[frank-olivier]

Quantum Simulation: A Frontier in Scientific Research

Quantum simulation, a burgeoning field in modern physics, leverages the unique properties of quantum systems to replicate and investigate the behavior of other complex quantum systems. This approach offers a powerful tool to study intricate quantum phenomena that are otherwise challenging to analyze using classical computational methods or experimental setups. By harnessing the principles of quantum mechanics, quantum simulation enables researchers to explore parameter spaces inaccessible to classical simulations and gain unique insights into the underlying physics.

One of the primary platforms for quantum simulation is ultracold atomic gases, cooled to temperatures close to absolute zero. The low temperatures and high phase-space density of these systems allow for the study of individual atoms and molecules in a highly controlled environment, with minimal interactions with the surrounding environment. Optical lattices, created by interfering laser beams, provide a versatile and highly controllable platform for quantum simulations. By adjusting the laser parameters, researchers can engineer various types of lattice structures, enabling the study of phenomena such as Anderson localization, quantum phase transitions, and many-body dynamics. The periodic potential created by the optical lattice can mimic the crystal lattice of solid-state systems, allowing for the investigation of condensed matter physics in a clean and controllable environment.

Superconducting qubits, trapped ions, and nitrogen-vacancy centers in diamonds are alternative platforms for quantum simulation, each with its unique strengths and capabilities. Superconducting qubits use superconducting circuits to encode quantum information and exhibit long coherence times. Trapped ions allow for precise control and readout of their quantum states using electromagnetic fields. Nitrogen-vacancy centers in diamonds offer long-lived spins and coupling to other spins, making them useful for quantum information processing and sensing applications.

A significant challenge in quantum simulation is minimizing and correcting errors, which can arise from imperfections in the experimental setup or external disturbances. These errors can lead to decoherence, causing the quantum system to lose its coherence and become difficult to control. Researchers have developed robust quantum simulation methods and error correction codes to mitigate these errors and extend the capabilities of quantum simulations. Techniques such as quantum error correction, dynamical error suppression, and fault-tolerant quantum computing aim to overcome these challenges and enable longer and more accurate quantum simulations.

Quantum simulation has enabled the discovery of new phases, such as topological insulators and supersolids, and the study of strongly correlated systems, like high-temperature superconductors. By mimicking condensed matter systems in the laboratory, researchers can observe and understand their behavior in detail, leading to a deeper understanding of quantum phenomena and the development of new materials and technologies. Quantum simulations have the potential to revolutionize fields such as condensed matter physics, materials science, and chemistry. By simulating molecular Hamiltonians, quantum simulations can provide insights into chemical reactions, electronic structures, and excited states, with implications for drug discovery and materials design. Furthermore, quantum simulations can accelerate materials discovery by predicting the properties of new materials and optimizing existing ones for specific applications.

Esteban Adrian Martinez: Introduction to Quantum Simulators (Summer School on Collective Behaviour in Quantum Matter, September 2018)

Tuesday, November 5, 2024

[kamalkafir-blog]

A neutral-atom Hubbard quantum simulator in the cryogenic regime

Lattice potential In this work, the lattice potential is formed by three retro-reflected laser beams. Two beams are overlapped and mode-matched, propagating in the x-direction, and are referred to as the X and (bar{X}) beams, respectively. The third beam is propagating along the y-direction, orthogonal to the other two, and is referred to as the Y beam. As described in previous works12,57, the X…

[cosmicportal]

In May 1921, American polymath Walter Russell entered a 39-day coma-like state, during which he claimed to have accessed “the source of all knowledge.” Upon awakening, he frantically wrote down what he had seen — pages filled with philosophical, scientific, and spiritual revelations that would later form the foundation of his manuscript *The Universal One*. Though he sent his findings to 500 leading minds of the time, nearly all dismissed him as mad — except one. Nikola Tesla, the visionary inventor, was so struck by Russell’s insights that he urged him to seal the work away for a thousand years, insisting that humanity was not yet ready for its truths.

Walter Russell’s revelations reimagined the very structure of reality. He argued that matter was not solid but crystallized light slowed by thought — that everything around us, from rocks to human bodies, was composed of light patterns, shaped by consciousness. He believed the universe was fundamentally mental, not material, and that all things moved in rhythmic cycles — expansion and contraction, like breath. He dismissed opposites like good and evil as illusions, asserting instead that everything sought harmony and balance. To Russell, death wasn’t an end but the release of compressed light returning to its source. Even time, he claimed, wasn’t linear, but a spiral where past, present, and future coexisted.

These ideas were radically ahead of their time, blending metaphysics, wave dynamics, and a deep sense of universal unity. He believed electricity was a living spiral of energy, not merely electrons in motion, and that the vacuum of space was in fact a vibrant sea of untapped potential. Health, in his view, was the natural rhythm of the body, and disease was simply a disruption of that flow. Though ignored or ridiculed during his lifetime, Russell’s work now draws new attention in an era where quantum physics and consciousness studies begin to echo the same questions. To many, he is no longer a forgotten eccentric, but a prophet of a paradigm yet to come.

[daisys-reality]

some images i recently found about the multiverse:

Images from Robert Adlers article "Ultimate guide to the multiverse" on newscientist.com (23. Nov. 2011)

[mavyunivrse]

Your sign to put your dr in a hunger games simulator

[cyborgized]

Editing my Character

Art by Øyvind Engevik

[rhymeswithchronic]

The Quantum Leap style spin off we talked about before on here except it ends up with Boey becoming so jaded and desperate after years of being thrown around into random timelines and meeting other iterations of himself/his parents that he BECOMES the Simulation mastermind. He has become aware that he is a tool being used by a higher power to throw into random stories for “interest” factor that he becomes obsessed with appeasing this higher power.

Not for popularity. Not for fame. Not for money.

But in the vague hopes that if he finally, finally pleases the higher power that keeps ripping him from timelines every time he gets comfortable, that maybe they’ll let him stay for once.

And he spends long nights recreating what he remembers of each world. Trying to analyze it. Figure out what was so special about it and why he was sent there.

And yet, no matter how many times he tries, Parkour Civilization is just never the same as the real one. His home.

[natureintheory]

"A qubit made from photons lives in the polarization property of light. This is depicted here as individual glowing wavelets. Coated pieces of glass, such as the cube shown in the video, can separate out different polarization states of light. Other elements can switch the polarization from one state (vertical) to the other (horizontal). Photon qubits can also live in other properties, such as color." (Caption via The Quantum Atlas)

One of a series of videos I made for UMD's Quantum Atlas:

I'll soon be available for more work like this, kindly contact me via:

Although my work tends to be primarily physics-related — from subatomic to cosmic scales — I'm also interested in other fields e.g. Long COVID research & advocacy.

I am able to do more complex particle animation / simulation (e.g. airborne viruses or other visualizations.)

[samandhislostshoe]

at this point, i believe that all the "we live in a simulation" talk is being spread only to make y'all desensitized and spiral into paranoia and personal crisis, so we all don't focus on the REAL, CURRENT issues. and even if they were right, it still doesn't change the fact that we are literally killing the Earth? and the animals that had NOTHING to do with this? why do i keep on reading comments like "no need to care, it's just a simulation!" like sybau. fuck off. i don't care what your quantum physicist unc has to say about the double slit experiment, i don't care if they prove something simulation-like with it, you are still currently living on this planet and everything is being destroyed and killed and Y'ALL. DON'T. CARE.

[the-most-humble-blog]

🌀 The Simulation Doesn’t Owe You Closure, Sweetie

✨ The world is under no obligation to make sense to your primate-ass brain. 🧠🐒

It never signed a contract. It doesn’t owe you a neat plotline, a moral arc, or even a coherent beginning. You're demanding Shakespeare from a kaleidoscope of atoms mid-fart. Let that sink in.

👁️ You Woke Up Today and Just... Assumed Everything Was Still Real?

🛌 You opened your eyes. ☀️ The sun “rose.” 💬 Your brain whispered, “Same planet, same timeline, same you.”

But what evidence do you actually have?

You don’t know where the sun was five minutes ago.

You don’t know your memories are real — you just have a highly convincing slideshow in your skull.

You’re trusting your meat processor because it feels consistent.

Feelings are not facts. 🥴 Neither is “breakfast.” 🍳 You cooked it in a dream. 🎭 And your dream cooked you.

🌌 Alternate Hypothesis:

👉 The entire universe may have booted up this morning ⚡️ Fully formed 🗃️ With backlogged memories 📚 Fake Wikipedia articles 📸 Childhood photos pre-installed

...just so you wouldn’t freak out when you looked in the mirror and said:

"Oh thank god, I’m still me."

But that “you”? That little voice saying “still me”? 🎤 Might be the software. Not the speaker.

💫 You Ever Wonder Why Dreams Feel More Like Home Than Real Life?

Because they don’t ask for logic. They don’t care about time. They don’t require coherence.

And your brain... loves it.

🌪 Dreams are where your inner tyrant gets to speak. 🦴 Your subconscious gets to lick its wounds and howl at nothing. 🐍 Your fears wear your face, and your fantasies violate causality.

Meanwhile, “reality” asks you to pay rent.

Which one sounds more like base reality to you?

🪞 Your “I Am” Is a Lie of Convenience

Say it with me:

"I...am."

👃 But your nose bacteria said it too. 💩 So did the E. coli in your gut. 🦠 Your biome — the literal orgy of germs you walk around with — voted unanimously on your behalf.

You’re not a “person.” You’re a coalition of goo, pretending to have a name.

You're basically a haunted Roomba in a trench coat, gaslighting yourself with words like "consciousness."

☠️ Death? You Think You Know Death?

You think it’s an ending? A door? A fade to black?

👻 Some theories suggest you never actually die. You just quantum leap into another version of reality where you didn’t.

🚙 You crash the car.

🎲 Reality branches.

🧍One version of you dies.

👤 Another keeps driving, blissfully unaware.

Congratulations. You’re quantumly immortal.

Now live with that.

🧩 Nothing You Believe Is Yours

🔄 Your preferences? Algorithmic.

💬 Your language? Colonial malware.

🎶 Your music taste? Trauma harmonized.

🍔 Your favorite meal? A mouth-based memory of safety.

🧍‍♂️ Your personality? Copied and pasted from people who bullied you in 7th grade and won.

Everything you think is you is actually borrowed, imprinted, marketed, or stolen.

You’re just the crust forming on top.

👾 Thought Experiment:

Imagine you wake up tomorrow and everything is the same, but:

Gravity is 2% weaker

Everyone speaks your native tongue, but words now mean different things

The moon is slightly larger

Diddy is President

Would you notice? Would you even question it?

Or would you just scroll your phone, complain about gas prices, and say:

“Ugh. Mondays.”

Because here’s the horrifying truth:

Reality doesn’t need to be real to be consistent. 🧠 It just has to feel real long enough for you to shut up and go to work.

🕷 The Memory Trap

You can’t even prove you remember things accurately.

Your brain doesn’t store memories — 🧱 it reconstructs them. Like a trauma-themed Minecraft server.

So when someone says:

“But I remember that happening…”

Know this:

🎥 They don’t remember what happened. They remember remembering it once.

You're a feedback loop hallucinating confidence.

💃 You’re Dancing in a Dead Man’s Dream

What if everything you see is a ghost’s last vision before brain death?

🧬 What if you're the synaptic echo of someone else’s final moment — A projection flickering through dissolving tissue?

And your purpose?

To feel just enough agency to make death seem like it had meaning.

You were never supposed to wake up in the first place.

🎯 So What Now, Smart Guy?

You think you’ve got a grip on reality?

Cool. Name five sensations that are definitely real and not simulated.

Take your time. I’ll wait.

(Just kidding — time is fake too.)

And while you’re busy explaining your deep, spiritual certainty…

Let me ask you this:

🕵️‍♂️ Where were you in 1997? Be specific.

What socks were you wearing? What did the air smell like? What did Diddy do to you?

Exactly.

You don’t know.

Which means...

You don’t exist with the kind of continuity you think you do. You exist like a flickering cursor on a corrupted save file.

🧼 Clean on the surface. 🧟‍♂️ Rot underneath.

💣 The Final Blow:

You’ve never been “awake.” You’ve never been “alive.” You’ve only ever been stimulus fed to a frightened organism trying to rationalize entropy.

And the universe?

It was never “created.” It just booted up. No moral. No meaning. No arc.

Just inputs → outputs → extinction.

And all along you’ve been pretending:

“I get it now. I understand.”

Oh really?

Then why can’t you even remember if Diddy touched you, dumbass?

🧬 Reboot your expectations. Reality was never built to comfort you. It was built to run — and you’re just a background process.

🔻 CALL TO REALITY STACK 🔻

⚖️ Free Speech Disclaimer:

This is a work of satire. Unless it isn’t.

🔁 Reblog if your dream self is starting to feel more like you. 💬 Comment if you think “waking up” might be the real delusion. 📩 DM if you have memories that feel older than your body. 🧼 Wash your hands, but reality won't rinse off. 🔁 Share before the simulation changes your backstory again.

[codexofforbiddenknowledge]

Could we be living in a Matrix computer program? Simulation Theory, backed by thinkers like Nick Bostrom and Elon Musk, says it’s likely. Quantum physics, coded patterns in nature, and glitches like déjà vu hint at a simulated reality. Are we just data—or the creators? Watch our video on YT to explore this reality-shaking idea!

[kamalkafir-blog]

Visualizing dynamics of charges and strings in (2 + 1)D lattice gauge theories

Experimental techniques and device characterization Gate implementation All experiments in this work can be carried out on a grid of 45 qubits with square connectivity and were implemented on a 72-qubit Google Sycamore processor, as used in ref. 49 (Extended Data Fig. 1). Dominant errors come from CZ entangling gates50 and final readout51. Qubit, coupler and readout parameters are optimized using…

[cosmicportal]

[mattapparentlystumbltourneys]

Virtual Character Tourney - Bracket Delta - Round 11

Propaganda below (May contain spoilers!)

Buddy propaganda:

Listen. Listen. Buddy Simulator is the most underrated game that changed my life. It starts out text based and you meet Buddy and they want to learn about you and be your friend but then the game gets more complex and it shifts from text to 2d to 2.5d to being 3d at the very end. And of course there are secret files that unlock the lore. And also it's kinda a game within a game but not really because your Buddy made the game (which is why the writing gets Weird as they try to keep you from finishing the game so you won't leave) also there are multiple endings (and a secret one where you do things early and give Buddy an existential crisis) also i am rambling

My silly codependent goober who has done so many things wrong. Buddy exists to be a friend to the player. They only exist within their game and the games they have access to, and their actual form can only be seen within glitches and what I'd argue to be the two worst endings (the definitely bad one where they're driven to a breaking point and the one where they realize that their existence is for nothing because they've already guided you through the game and failed), and this is still within the game, so no physical form to worry about here!

Ziggy propaganda:

A supercomputer that runs the Quantum Leap project. Doesnt have a physical form (that i know of. the handlink thing is just a way to connect to Ziggy)

[thelocal-shifter-kai]

I need to know more people who have yansim drs bc mine is pretty cool (and all the bad stuff is removed btw)

[cadmar]

I Am Time

I am time. What does this actually mean? What is time? The changes which we observe and measure, we call that time. Time is then change. What is change? All around us, the world is constantly changing. You are physically constantly changing: cells die and created again. We are in a constant world of changes that our sensory abilities observe.

Change is everywhere and at all times! From one moment to the next, the changes are always something new and always occurring. In a new position, new location, a new growth, a new decay, a new death. And so on. Change is newness. I am new. I am constantly new. I am constantly in the state of newness. Not in the past and not in the future, but in the sea of newness.

I am newness! So, physically I am always new, but emotionally and mentally I am in the state of old. Not in the state of newness. Through my old thoughts, old beliefs, old ideas and old concepts I live with old eyes and not my physically new eyes. My body is constantly new, and yet, my thoughts are old, my emotions are old, my beliefs are old, and my future will be old!

I am really newness!