Quantum computers are crazy and have the potential to change how we understand the world around us. I got to go see one with Marques Brownlee recently at IBM. It was wild! But quantum computers are not just better computers. Here’s the analogy that helped me…
If you like fun tech videos, you’ll love the full adventure to see a quantum computer with MKBHD!
And if you want to support optimistic tech content, the best thing you can do is subscribe 🙂
#shorts #technology #quantum #stem
source
Utterly terrible explanation.
That’s just the cooler.
You analogy is even worse
Boat analogy makes no sense
Please check my comment on quantum computer
Yes. Below is a merged conceptual design that combines:
Quantum Harmonic Oscillator (QHO)
Krotov optimal control (simplified framework)
A transistor-inspired control layer (modeled as a switching element inspired by early Fairchild semiconductor logic, not a physical quantum transistor)
A single Python program suitable for running in a standard Python interpreter or PyCrust with NumPy.
import numpy as np
# =====================================================
# Quantum Harmonic Oscillator + Krotov Control
# + Semiconductor Memory Inspired Control Layer
# =====================================================
HBAR = 1.0
MASS = 1.0
OMEGA = 1.0
GRID = 128
XMAX = 8.0
x = np.linspace(-XMAX, XMAX, GRID)
dx = x[1] – x[0]
# Second derivative
D2 = np.zeros((GRID, GRID))
for i in range(1, GRID-1):
D2[i,i] = -2
D2[i,i-1] = 1
D2[i,i+1] = 1
D2 /= dx**2
# Hamiltonian
T = -(HBAR**2/(2*MASS))*D2
V = np.diag(0.5*MASS*OMEGA**2*x**2)
H = T + V
energy, state = np.linalg.eigh(H)
print("Ground Energy =", energy[0])
psi = state[:,0]
# —————————————————–
# Semiconductor Memory Cell
# —————————————————–
class MemoryCell:
def __init__(self):
self.bit = 0
def write(self,value):
self.bit = value
def read(self):
return self.bit
memory = MemoryCell()
# —————————————————–
# Transistor Controller
# —————————————————–
class FairchildController:
def __init__(self):
self.gain = 1.0
def pulse(self,time):
if memory.read()==1:
return self.gain*np.sin(2*np.pi*time)
return 0.0
controller = FairchildController()
memory.write(1)
# —————————————————–
# Simplified Krotov Update
# —————————————————–
def krotov_update(control,target):
alpha = 0.05
error = target-control
control = control + alpha*error
return control
pulse = np.zeros(200)
target = np.cos(np.linspace(0,np.pi,200))
for iteration in range(100):
pulse = krotov_update(pulse,target)
# —————————————————–
# Time Evolution
# —————————————————–
dt = 0.01
history = []
for step in range(500):
t = step*dt
field = controller.pulse(t)
Hc = H + np.diag(field*x)
U = np.eye(GRID) – 1j*Hc*dt
psi = U @ psi
psi /= np.linalg.norm(psi)
history.append(np.real(np.vdot(psi,H@psi)))
print("Simulation Complete")
print("Final Energy =", history[-1])
print("Stored Memory =", memory.read())
This merged design contains four layers:
1. Quantum layer: Builds and diagonalizes the quantum harmonic oscillator Hamiltonian.
2. Control layer: Uses a simplified Krotov-style iterative optimization to improve a control pulse.
3. Semiconductor-inspired layer: Models a memory bit and transistor-like gate that enables or disables the control pulse. This is an engineering abstraction inspired by early Fairchild memory logic, not a model of an actual quantum transistor.
4. Simulation layer: Evolves the quantum state under the controlled Hamiltonian and reports the final energy.
For a research-grade implementation, you would replace the simplified optimizer with the full Krotov algorithm (using adjoint-state propagation and forward/backward evolution), use unitary propagators such as scipy.linalg.expm, and optionally integrate QuTiP or the dedicated Krotov Python package for accurate quantum-control simulations.
I don't think even the people building them really get it
Stupid who wants a big espresso machine in their office 😂
👍👍👍
My “friend” yeeeah we know What yall doin
Probably the worst explanation of what quantum computing can do.
If it’s valuable, why isn’t it in the worldwide market?
That machine is beautiful
I think a better analogy would be a ✈️
20:00 planes, flying over, blocking out the sun??
So then tell us how could quantum computers make our lives better, you never said anything….
Your explanation lacks the main gist but a good effort nonetheless.
Con artists and grifters at work, all out to defraud government/taxpayers' money for lifetime employment.
Worst explanation ever
Na
Why touch it
Cars? Waters? Boast? Go back to college
Build different
.
boats!!! good analogy
I'm still lost
Btw the actual computer is a small chip. Those gold metal things are just glorified cooler.
Traveling down a street-will be of no use with a boat. So unless you live on water, I suspect (based on this)-they will be way cool, and way limited.
But a quantum computer is actually worse at certain tasks than a regular computer.
So they are, in some cases, not boats but worse cars.
Can we be play gta 6 in this qc 🤨🤔😁
its more like having multiple cars
I think we need to be able to describe these things more accurately. I get what you’re trying to do but classical computers can 100% solve any problem a quantum computer can, just for very specific types of problem, it could take longer than the universe has existed to compute. It’s not really different terrain, it’s a subset of very specific problems in math – a lot of which we’ve made absolutely no progress on the software for.
bad analogy
During your tour at IBM did you asked how many bits it takes to teleport someone without taking a plane nor train? I recently saw a video about Japan using quantum computers to teleport people. They're close, but more research need to be done.
We will soon be in the last 7 yrs. the great tribulation.the mark of the beast. Satan will contol the world…..there will be no place to escape….your only hope is to repent of sin. Put your trust in Jesus as Lord God and Savior. For the forgiveness of sin…..and the free gift of eternal life in heaven… all Ai will do is usher in the satanic control grid .see revelation ch 13
The quantum computer also has premium skin
You are sooo cool 🤘🤘🤘💚
This isn’t a good example/explanation of quantum computing. Look at GI Quantum Computing. To me, it reminds me of an atom, molecules, instead of being limited to binary now. Binary uses 0 1. Quantum uses an infinite amount all at once.
You are awesome
Thanks Natalie Portman! You rocked in V for Vendetta.
yes, it is harder to do 1+1 in quantum computer
i still want like an example of something it can do … im trying to learn this. i cant understand it. im frustrated.
Soo decoherent …
These analogies are terrible. Get better. Fake journalism.
That is not a Quantum computer. They are pipes and plates. You got scammed and they are laughing at you. The actual chips are floating in space. 😂
Imagine revisiting this video 10 years from now and listen to yourself.
Super computer not quantum computer
I swear you are Allegra and he is Chester!