It was the greatest lecture that i've seen about this topic I really needed to understand how it works by real fibers instead of just seeing some slides ❤
@mfglinux2 жыл бұрын
Very nice talk and nice recording. One can watch it like if we were there. Congrats to the speaker for his educational spirit
@ArpitAgarwal19 жыл бұрын
very insightful in the field of SPS and detector
@drvignesh8 жыл бұрын
Thought provoking and interesting info regarding single photons!
@aroopkantibose13733 жыл бұрын
very nice talk
@drarp6 жыл бұрын
The real content starts at 9:01
@janalbrecht50993 жыл бұрын
love people like you thank you
@phyozeng2233 жыл бұрын
Great talk!
@rastislavblablabla36155 жыл бұрын
Excellent lecture. Do you have it in written form? I come from Slovakia and some things I do not understand well and I would like to read it all.
@BrendaEM5 жыл бұрын
Thank you for posting this : )
@abdulrahmanalbarqi59926 ай бұрын
Nice lecture. i was wondering how can you distinguish between initial detection and after pulse detection? thank you 01:14:00
@user-hk6pu8nt1s2 ай бұрын
This light detectors how much photons can you see?, no more than three
@engx37334 жыл бұрын
We are dealing with pulse issue with our quantum device running at quanta - Is there any detector that can solve this issue?
@alexandriahephaestrin6342 жыл бұрын
The link is not working
@jamesstewart72123 жыл бұрын
Any thought on the size of a photon? Could they be large or very large but the detection efficiency low?
@schmetterling44772 жыл бұрын
Photons are energy. Energy doesn't have a size.
@jamesstewart72122 жыл бұрын
@@schmetterling4477 Photons have momentum, can be discreet (photoelectric effect) or wavelike (interference). The wavelength can be miles long (radio) or discreet (gamma). But no size?
@schmetterling44772 жыл бұрын
@@jamesstewart7212 Photons are irreversible energy transfers between an electromagnetic field and an external system. A photon never shows interference effects. Only the quantum mechanical ensemble of an em field does. Most people, many physicists included, are having a hard time distinguishing between one photon and many (the ensemble).
@jamesstewart72122 жыл бұрын
@@schmetterling4477 Thank you for your thoughtful response. Your photon is a verb. I'll be thinking about that one.
@rl70122 жыл бұрын
@@schmetterling4477 So how do they know when they get a single photon then?
@sudeephalder50772 жыл бұрын
Please provides the answers. How single photon can be produced from a continuous laser source ??? Explain in details pl Can we use pulse laser as an replacenent of single photon source , if not how these two differ???
@schmetterling4477 Жыл бұрын
A photon is simply an irreversible energy transfer between an electromagnetic field and an external system. It doesn't take a laser or a pulsed source to detect a photon and a single detection will tell us absolutely nothing about the source.
@jasonbourne71792 жыл бұрын
Approved for 30k.
@kratos51865 жыл бұрын
I'm confused.Aura is light.,but we can't see that light with naked eye?
@MrSupervin944 жыл бұрын
It’s ok lord Dracula, always stay away from light if you don’t want to die
@rl70122 жыл бұрын
Some of this talk is bs for sure.
@WalterSamuels10 ай бұрын
The delusion of the "single photon". There is no such thing. The size of a "single photon" is always relative to the emitting particle's energy, and the energy received by that particle.
@INDIOBRAVOO10 ай бұрын
It's a cult bro
@bobm43786 ай бұрын
problem is, most of this is defined by MATH.. If you are in college, and want to pass, you do what the *ancient* books say... 'reality' has nothing to do with it.. and do note 'energy' has only a level, and 'size' has a level AND length..
@user-ys4cy6jw1v3 жыл бұрын
In theoretical physics, what if photon is actually two photons sharing the same room.
@schmetterling44772 жыл бұрын
Then the wave function is fully symmetric. Bosons like to do it that way. ;-)
@veronicanoordzee64407 ай бұрын
MODERN PHYSICS IS BECOMING A RELIGION: A LOT OF PREACHTERMEN SPEAK ABOUT ALL KINDS OF PHENOMENA, BUT THEY MAKE NO EFFORT AT ALL TO PROVE THEIR CLAIMS. ARE YOU A BELIEVER TOO?
@bobm43786 ай бұрын
@veronicanoordzee6440: you do not have to shout!! (caps)- the only 'religion' is working hard in college to get your good grades, and get a job... :/
@veronicanoordzee64406 ай бұрын
@@bobm4378 YEP, IN LIFE YOU GET FEW THINGS FOR FREE. GOOD LUCK! P.S. WHEN YOUR PERSONAL PHOTON-RECEPTORS DON'T WORK THAT WELL, "SHOUTING" BECOMES INEVITABLE ;-)
@qualquan3 жыл бұрын
unhelpful
@schmetterling44773 жыл бұрын
What was unhelpful about it?
@rl70122 жыл бұрын
I agree. Total word salad no proper scientific substance.
@jacobvandijk65252 жыл бұрын
@@rl7012 I advice you to read a book on Quantum Optics.
@rl70122 жыл бұрын
@@jacobvandijk6525 Why? It won't explain how they isolate a single photon and shoot it will it? I advice you to learn to think for yourself sunshine.
@jacobvandijk65252 жыл бұрын
@@rl7012 Why? I thought you were searching for "proper scientific substance". If not, dream on.
@ddstar4 жыл бұрын
46:34 totally and absolutely wrong. Read Steinmetz, Faraday and Maxwell and then Tesla. None of this is true. That's the part when relativity breaks down and quantum becomes a dumb thing. There is a spacial void between the two plates and only blue light can traverse through the because of its wave length properties. Lower frequency light bends more when it comes in contact with the magnet field, so you never see a connection of the circuit.
@schmetterling44773 жыл бұрын
A chocolate Santa/cookie package is on the way to you.
@rl70122 жыл бұрын
@@schmetterling4477 Your the one that needs the care package.
@rl70122 жыл бұрын
That is not the only place he is wrong.
@schmetterling44772 жыл бұрын
@@rl7012 Why are you so angry at people who know more than you? Did you have a bad time in high school science class? Does the humiliation sit that deep? Dudes, you need help to overcome your knowledge-phobias. :-)