r/QuantumPhysics

You are measuring what "it" does without knowing what "it" is.

what is a wave function? a wave of what exactly? what exactly is this quantum feild? what is this "excitation" in the feild? what is the feild?

yeah we dont know. dead end. idk man. atp if you told me everything was made of some spiritual energy vortex I'd buy it .

dark energy, why is it expanding? idk.

dark matter? idk

qualia? who knows.

quantum feild theory? idk.

gravity? whoops.

I think, I think the universe is a big hyper toroid. it looks flat, but on a higher dimension its actually a torus. and we are moving along its curvature, even though its flat for us, and the curvature widening is actually dark energy, and dark matter is probably just regular matter having an extra dimensional feature. quantum field theory is probably the foam inside the universe, gravity is probably some extra dimensional thing. idk man. maybe its all magic deep down. and qualia is just the universe experiencing itself.

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u/SkyBoundAssumption — 2 days ago

Why shorter wavelength requires more energy to produce or has more energy?

To emit a radiation with short wavelength, it requires a quantum of larger energy than to emit a radiation with a longer wavelength. Why is that? (I Apologise if I made any mistakes, English isn't my first).

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u/Chance_Math_8396 — 3 days ago
▲ 3 r/QuantumPhysics+1 crossposts

TerminalPhone is a single, self-contained Bash script that provides anonymous, end-to-end encrypted voice and text communication between two or more parties over the Tor network. It operates as a walkie-talkie: you record a voice message, and it is compressed, encrypted, and transmitted to the remote party as a single unit. You can also send encrypted text messages during a call. No central server infrastructure, no accounts, no phone numbers. Your Tor hidden service .onion address is your identity.

u/bldrlife1 — 4 days ago
▲ 1 r/QuantumPhysics+1 crossposts

Picture a dynamically structured Hamiltonian

The potential for optical pumping, floquet driving, dynamic barrier shaping… it’s more exciting than H=H0 anyway 😏

u/AccordingIce5986 — 5 days ago

Dope ass god bubble

I was thinking about analog vacuum decay simulations and had a speculative idea.

If a propagating “bubble” in a quantum simulation only spreads through compatible/coherent atoms or states, could you intentionally surround it with incompatible/detuned regions to contain it?

Basically like a quantum firebreak.

Then if the bubble could be stabilized, maybe the interior could function like a programmable alternate-rule region for testing material behaviors or exotic quantum phases.

I know this probably would not apply to real cosmological vacuum decay under current physics. I’m talking more about advanced quantum simulations or engineered quantum phases.

I’m not a physicist, so I’m probably missing terminology, but I’m curious whether this overlaps with existing ideas in quantum simulation or condensed matter physics.

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u/Cool_Message_3184 — 7 days ago

DTQEM v17.0 – A simple 2x2 Lindblad model for wave‑particle duality

Title: \[Open Source\] DTQEM v17.0 – A simple 2x2 Lindblad model for wave‑particle duality

Body:

Hi everyone,

I’ve been working on an open‑source numerical model (DTQEM v17.0) that simulates wave‑particle duality under continuous measurement.

The idea is simple:

\- The observer does NOT change the system’s energy (Hamiltonian is fixed).

\- The observer ONLY adds pure dephasing: L = sqrt(γ·E\_ext)·σ\_z.

This correctly reproduces the quantum Zeno effect (P=0.5 at E=1, coherence lost) and works for both massive particles and photons (e.g. red light, 650 nm).

I’m not asking you to believe anything.

👉 Just clone the repo, run the code, and see for yourself.

You lose nothing by trying.

If you have 5 minutes, give it a run.

I would really appreciate your honest feedback – positive or negative.

📌 Code & whitepaper:

https://zenodo.org/records/20162958

Thank you for your time.

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u/Defiant-Vacation4465 — 6 days ago

New to Quantum Physics

Hi everyone,

I am passionate about Quantum Physics. A portfolio manager with a background in mathematical finance and engineering and have recently gravitated towards this topic. Very interested in Quantum gravity. Need some advice on where to start and what to read first. Some of my friends recommended Rovelli to begin with. I'd appreciate any suggestions.

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u/EnvironmentalAd4436 — 7 days ago
▲ 4 r/QuantumPhysics+1 crossposts

For rectangular box with sides L1 and L2, E=ℏ^2π^2/2m(n1^2/L1^2+n2^2L2^2), what is requirement for nondegeneracy?

shouldn't the requirement be (L1/L2)^2 being irrational instead of L1/L2 being irrational, because L1/L2 being irrational can lead to its square being rational sometimes. So what is the actual answer here for it, like L1 L2 being incommensurate or their square being incommensurate?

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u/Resident_Prize_8309 — 8 days ago
▲ 68 r/QuantumPhysics+13 crossposts

Quantum Electrodynamics visualization using Feynman Diagrams

Quantum Physics Series

Video 1 of 6: Quantum Electrodynamics visualization using Feynman Diagrams

Author: Mugambi Ndwiga
In: www.instagram.com/craftsandengineering

This animation visualizes the fundamental interactions of Quantum Electrodynamics (QED) using Feynman diagram conventions. QED is the relativistic quantum field theory of electrodynamics, describing how light and matter interact.

Visualized Phenomena

The animation cycles through six key physical processes:

  1. Compton Scattering: A photon hits an electron, resulting in an energy shift and change in direction.
  2. Electron-Positron Annihilation: An electron and its antiparticle (positron) collide to produce high-energy photons ().
  3. Pair Production: A high-energy photon interacts with the electric field of an atomic nucleus to create an electron-positron pair.
  4. Bremsstrahlung (Braking Radiation): A charged particle (electron) is deflected by a nucleus and radiates energy as a photon.
  5. Møller Scattering: The interaction and repulsion between two electrons via the exchange of a virtual photon.
  6. Vacuum Polarization: A process where a photon temporarily fluctuates into a virtual electron-positron pair, affecting the vacuum's permittivity.

For code and more click Mathematical-video-animations-and-visualization/QED_Feynman_Diagrams_Animations.ipynb at main · zombimann/Mathematical-video-animations-and-visualization

u/Fluffy-Selection2940 — 8 days ago

I'm really curious about Bose-Einstein condensate and want to know the examples of Bose-Einstein condensate found in the universe can someone please help me out?

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u/AfterDay9963 — 7 days ago

I’m trying to understand decoherence and the macro/micro distinction in quantum mechanics, and I feel like I’m missing something fundamental

People often explain why macroscopic objects (tables, cats, planets, etc.) don’t display obvious quantum superpositions by saying they constantly interact with the environment, causing decoherence.

But here’s what confuses me:

Don’t microscopic particles also constantly interact with the environment?

For example:

- photons travel through space interacting with fields and matter,

- electrons are affected by electromagnetic interactions,

- atoms are constantly surrounded by radiation, fields, particles, etc.

So why do quantum effects survive there at all?

If interaction with the environment destroys coherence, shouldn’t microscopic systems also decohere almost instantly under ordinary conditions?

Is the distinction really about “small vs large,” or is it more about the degree and complexity of entanglement with the environment?

And if that’s true, then where exactly is the transition from quantum to classical supposed to happen? Is there even a real boundary, or is classical behavior just an emergent approximation due to overwhelming decoherence?

I think I may be misunderstanding what decoherence actually means physically, especially regarding information leakage into the environment.

Would appreciate an explanation from someone who understands the modern view of this better.

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u/Budget_Start_4257 — 9 days ago
▲ 0 r/QuantumPhysics+1 crossposts

Should i Learn Quantum physics

Im going to plan on learning Quantum physics and its subfields along side math as well should i learn Quantum physics for party facts they dont know about

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u/Prestigious_Prune663 — 11 days ago

Force can exist as a fundamental quantum observable with deep ploughing consequence to quantum measurement theory, study finds

For nearly a century, quantum mechanics has treated energy as the fundamental generator of dynamics through the iconic Schrodinger equation, while force remained a derived quantity.

New peer-reviewed research published in Europhysics Letters shows that when force is elevated to a fundamental quantum observable—on equal footing with energy and momentum—a new force wave equation emerges (see image above and IMAGE DESCRIPTION below), capable of modeling open-system dynamics and respecting Ehrenfest's results in the conservative limits while preserving the core principles of linearity and unitarity.

This may open a new direction for quantum mechanics—where dynamics are governed not only by energy, but by force itself.

IMAGE DESCRIPTION: The image above represents the case of a free quantum particle (zero potential energy) influenced by impressed forces.

(A conceptually rigorous validation of the discovery of force as a fundamental quantum observable - https://doi.org/10.1209/0295-5075/ae5ad3.)

u/Prime_Principle — 10 days ago
▲ 7 r/QuantumPhysics+1 crossposts

Dual-Channel Qubit Protection System — Proteggere i qubit senza -273°C

An original idea developed through pure intuition: treating heat and electromagnetic disturbances as cancellable signals, instead of fighting them with industrial cryogenics.

The world’s most advanced quantum computers — those built by IBM, Google, and IonQ — operate at temperatures around -273°C, colder than outer space. This is because their fundamental components, qubits, are extraordinarily fragile: any interaction with the surrounding environment destroys them within microseconds. This phenomenon is called decoherence, and fighting it with extreme cold is today’s standard solution.

But is there another way?

THE PROBLEM: WHY QUBITS DIE

The two main causes of decoherence are:

  1. Thermal vibrations (phonons) — even minimal ambient heat generates atomic vibrations that “shake” the qubit and cause it to collapse.
  2. Electromagnetic disturbances (EM) — external electric and magnetic fields interfere with the qubit’s quantum state.

The current paradigm says: reduce everything as much as possible. Extreme cold for the thermal component, electromagnetic shielding for the EM component. It works — but it requires enormous infrastructure, very high energy consumption, and makes quantum computers impossible to deploy outside specialised laboratories.

THE IDEA: TREAT NOISE AS A SIGNAL

This idea was born from a simple analogy: noise-cancelling headphones.

Headphones don’t lower the volume of external noise — they cancel it actively. A microphone captures the incoming noise, a processor calculates the opposite wave, a speaker emits it. Destructive interference: noise + opposite wave = silence.

The question I asked myself: can the same principle be applied to heat and EM disturbances around a qubit?

THE SYSTEM: TWO PARALLEL CHANNELS

The Dual-Channel Qubit Protection System I propose is structured in five layers:

LAYER 1 — Passive phononic crystals
Material structures with periodic patterns that physically block the most dangerous vibration frequencies for the specific qubit. No energy consumption — passive baseline protection.

LAYER 2 — Dual environmental sensing
Phononic sensors for the thermal channel + weak EM sensors for the electromagnetic channel. Both measure the ENVIRONMENT around the qubit, never touching it directly. This is fundamental: directly measuring the qubit would destroy it (the collapse problem in quantum mechanics).

LAYER 3 — Cross-domain predictive AI
An AI model learns the disturbance patterns specific to the physical system and predicts incoming waves from both channels microseconds in advance. It does not correct after the fact — it prevents before. This distinction is the difference between feedback and feedforward.

LAYER 4 — Active dual cancellation
Transducers emit anti-phase phonons for the thermal channel + anti-phase EM fields for the electromagnetic channel. Destructive interference on both fronts simultaneously.

LAYER 5 — Cross-channel early warning
The most conceptually interesting discovery: thermal phonons and EM fields are not independent inside materials — they influence each other. Variations in the EM channel can anticipate imminent thermal disturbances, and vice versa. The system uses one channel as an early warning system for the other.

WHAT ALREADY EXISTS — AND WHAT IS MISSING

After developing these ideas through intuition, I verified that some find correspondence in current research:

✓ Using vacuum instead of cold: already exists in ion traps (IonQ). Ionic qubits operate at room temperature in vacuum.

✓ AI to correct EM disturbances: Q-CTRL does this commercially. On May 6, 2026, they demonstrated a 3,000x speedup on IBM Quantum with AI-driven runtime error suppression.

✗ Active thermal noise-cancelling: not documented as an operational system. Passive phononic crystals exist, but AI-driven active phonon cancellation as an integrated system does not.

✗ EM feedforward + thermal cancellation as an integrated dual system with cross-channel early warning: not found in literature.

These last two points represent the space of potentially original contribution of this idea.

THE HONEST LIMITATION

A potential physical obstacle exists: the Landauer Limit. Erasing information inevitably produces heat. A heat-cancellation system that produces as much heat as it eliminates would be pointless.

However, it has not been proven that this makes the idea impossible — it could be a surmountable efficiency limit, not a fundamental physical wall. Answering this question requires technical expertise beyond my own.

CONNECTION WITH CURRENT RESEARCH

This idea has been shared with the researchers of paper arXiv:2605.04025 (Q-CTRL/IBM, May 2026) and with Michael Biercuk, CEO of Q-CTRL and Professor at the University of Sydney. The central technical question I posed: does your error suppression system already handle the thermal-phononic component, or does it work exclusively on electromagnetic disturbances?

ABOUT THE AUTHOR

I am Remo Pulcini, founder of QuantumHorizon.it. I have no technical training in physics or quantum computing. These ideas were born from pure conceptual reasoning — intuition and analogies, without accessing specialised literature.

The complete technical framework document is available as a PDF

This article was structured with AI support (Claude/Anthropic). The original intuitions were developed by the author independently.

First public documentation of this idea: QuantumHorizon.it — May 2026

SOURCES AND REFERENCES

  • arXiv:2605.04025 — Fast, accurate, high-resolution simulation of large-scale Fermi-Hubbard models on a digital quantum processor (Q-CTRL/IBM, May 6, 2026)
  • Q-CTRL — q-ctrl.com
  • IBM Quantum — quantum.ibm.com
  • NATO Quantum Strategy (January 2024)
  • DIA Worldwide Threat Assessment 2025
quantumhorizon.it
u/Salt-Relationship-68 — 11 days ago