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12:00 AM
Would set shit on fire
 
There are much larger entanglements - most thermal states are entangled, i.e. the equilibrium state of a quantum system at non-zero temperature is typically entangled, regardless of how many particles the system consists of.
 
Ach, Petersen, why don't Springer let me buy you
Literally no reason for this
@yuggib Today, somehow, my PDE lecturer managed to take over an hour to derive the d'Alembert solution of the wave eqn
 
12:32 AM
@BernardMeurer Yes.
|000> + |111>, for example.
@ACuriousMind Thermal states are entagled? Wat?
Where I come from thermal states are not entangled.
 
Wat are those kets
@DanielSank In Germany everything is entangled, that's how they know so much stuff
 
@BernardMeurer They represent three two-level-systems.
Each system can be in state |0> or |1>.
The state written above has three-way entanglement.
 
But does being able to write those kets imply that can be done experimentally?
 
@BernardMeurer No, of course not.
However, there this, for example.
 
Linking to a pdf by the martinis group, dat bias :p
 
12:40 AM
@BernardMeurer Of course I'm biased. I know our literature best.
It was the fastest most reliable thing for me to find.
 
Hum, there's a D. Sank in there, wonder who that might be
actually I just come to realize
DSank is a good musician name
 
@BernardMeurer Indeed.
There's a trick for generating rock star names.
Take your middle name, followed by the name of the street on which you grew up.
In my case this produces "Thomas Bunker", which is awesome.
 
Meurer Pacheco
Not so cool :(
 
I like it.
 
I could be a Jazz musician I guess
 
12:43 AM
@BernardMeurer Definitely.
 
You're on of those lucky people tho
whose middle names could be a first name
 
@BernardMeurer Why is that lucky?
 
Because people who hold you dear can call you Thomas and that's cute. If people try to do that to me they have a stroke
 
@BernardMeurer Nobody, and I mean nobody, calls me by my middle name.
That's actually very uncommon here, unless the middle name was used since childhood, in which case it is usually used exclusively.
 
Well but they could if they wanted to, the world's about possibility man
 
12:47 AM
For example, my friend "Jess" has full name "Charles Jess Riedel", but everyone calls him "Jess".
 
Among my group of closest friends three people (out of 7) are called Bernardo, causing a horrible amount of chaos and confusion
 
@BernardMeurer Hahahaha, nice.
 
Which led to people using my last name, which is even worse because it's so bloody common
 
Hm.
Get a good nickname.
How about "Pacheco"?
 
Tried that, ended up being called 'clit' for a week
 
12:49 AM
Or just "Pacho"
@BernardMeurer wtf
 
That's actually the name of a friend of ours hahaha
"Pacheco" is a very common name/surname here
 
@BernardMeurer Is that Portuguese?
@BernardMeurer Oh.
 
To this day I still don't know why I became clit, I'm just glad it died out
I think it had something to do with that "can't find clit" bug
Dunno
 
@BernardMeurer That was so funny.
I screen-shotted that one.
 
@DanielSank is this a good book for learning QM?
 
12:53 AM
@BernardMeurer Yeah, one of the best.
 
@DanielSank That was the best bug ever, I saved it too
Lel
 
@BernardMeurer No no, go with the other one.
 
vzn
hi @DanielSank whats new? ... wondering if you or anyone at your lab had any reaction to this... looks like big deal to me... :D
 
I'm always amazed by these things
Woah, a quote inside a quote inside a quote!
 
vzn
(oops)
hey @BernardMeurer how goes the college entry saga?
 
12:56 AM
@vzn I don't like reading these broke-ass popsci articles. Do you have a reference to the actual work? :-)
 
@vzn Damaging my blood pressure as usual. I got into UCSD (yay ^^). Now I gotta figure out how to pay
 
It's astoundingly stupid that pop writers don't put references to the real work.
 
vzn
oh you hardcore scientists and your antipopsci elitism... its right at the bottom.
 
@vzn Thanks.
It's not elitism.
 
vzn
the popsci summary is not really any different than the paper contents...
 
12:57 AM
I think I might have found someone to sponsor half my tuition over the 5 years, but I still need to get that straight and then get my parents to meet halfways
 
vzn
oh btw there is tons of popsci coverage of google qm computing, maybe that should be thrown out the window too :|
 
And figure out why on earth someone would want to sponsor me as well
 
vzn
@BernardMeurer did you get accepted somewhere/ you want to go?
 
UCSD :)
 
@vzn I hope I remember to read this later.
I can't access it from this computer.
 
12:58 AM
And VA Tech
and waiting on the glorious, golden plated diamond sprinkled IQC
 
@vzn I didn't say it should be thrown out the window. What the hell are you talking about? I said I don't want to read it.
 
::passionate sigh::
 
vzn
@DanielSank cant access physorg or phys rev letters? guess the papers behind paywall as usual if thats what you mean :(
 
I'm a trained physicist... why wouldn't I read the real article?
@vzn Yeah, I don't have PRL access from here.
 
vzn
ok trained physicist no offense intended :(
 
1:00 AM
italics=insult
 
vzn
geez! :(
 
@vzn Oh come on. It's like asking a Russian speaker why they don't read Anna Kerenina in translation.
@vzn you know as well as I do that the popular articles almost never accurately represent the real work.
 
#Open Source Physics
 
@BernardMeurer communist.
<3
 
vzn
lol go ahead and whack me over the head with your elite status :|
 
1:01 AM
Hahahaha
 
@vzn I can't tell if you're joking.
 
@vzn Drama
 
vzn
cant tell if you are joking :|
 
#justphysicsthings
 
OMG WHO'S JOKING
 
1:01 AM
@BernardMeurer Joke's on you.
 
@DanielSank Did you just italics me?
 
vzn
"huh?" (to quote the brilliant nihilist in here)
 
fite me
 
@BernardMeurer ok... what's your proposed fighting method?
Swords?
 
@0celo7 Apparently you've now been elevated to a nihilist
 
1:02 AM
Pistols at dawn?
Super Smash Brothers Melee?
 
@DanielSank I'm afraid of sharp things
CHESS
 
vzn
oh man you mentioned him by name, now all hell breaks loose o_O
 
(I'll f--- you up in Smash Brothers)
 
I don't own a video game to play Smash Bros
 
@BernardMeurer emulators, dude.
 
vzn
1:03 AM
hey, recently have been boning up on my chess skillz. (ps where the @$%& does that expr come from anyway...)
 
@DanielSank Those things can play online?
 
@vzn It's a great mystery.
@BernardMeurer Yes.
I'm more interested in Go.
 
vzn
@Bernard do you play? recently have been reading about kasparov vs deep blue, watching a few movies etc
 
It's easier to find smart people who don't just win in the first eight moves because they know openings.
 
@DanielSank's PhD thesis: Quantum Algorithms applied to Smash Bros
 
1:04 AM
@BernardMeurer Nah dude. I just apply blind rage.
 
vzn
go is awesome too, blogged like crazy on that last few weeks, a bit burnt out now!
 
@DanielSank That's the thing, I suck at chess
 
@BernardMeurer Me too.
 
Idk how to play go at all
It seems to simple to be true
 
I used to be ok in the early game against people who didn't know what they're doing, but I've always been horrible in the late game.
 
1:05 AM
@vzn I play almost every other day, barely ever win but keep doing it
 
I gotta focus on work.
See you guys.
 
I just love seeing how many different ways I can loose
@DanielSank See ya!
 
vzn
dont know much about go either, but think its totally awesome from AI perspective, learned a bit more last few wks, beautiful game... ~2.5M old... (chess only ~1.5...)
 
'only'
 
vzn
@DanielSank HEY YOU clean those qubits, NOW!
making mental note to get Go tips from DS next time around...
 
1:08 AM
@vzn But yeah, the saga is almost ending
 
vzn
did you get accepted somewhere?
youre in brazil right?
 
@vzn I'm in Brazil yes
I got into UCSD, VA Tech and UMN
and I'm waiting to hear from the IQC
 
vzn
do you want to study physics? (awesome!) :D
 
Probably going to UCSD
@vzn Computer Engineering
Thinking of minoring in applied physics
 
vzn
how many places did you apply to? oh comp engr right... do you want to design/ build computers?
 
1:10 AM
Dunno if I have the brains (for applied physics)
 
vzn
undergrad physics is not as hard as this chat room!
 
@vzn A bunch, I was somewhat disappointed with my results
@vzn I want to do research in new computer technology
currently I've been flirting with QC a lot
why I was thinking of minor in physics
 
vzn
but it does tend to get very heavy math later on... hey you got great results and dont worry about not getting into those really intense other schools. think "work/ life" balance suffers in those anyway. (some dicussion about that in here in the past)
QC is an excellent area to study and can also be approached from the CS angle if youre more interested in software aspects. physics angle would involve the physics of the setups etc... both really great...
 
Yeah I've been trying not to get sad over not getting into any of the schools I dreamt of
UCSD was my fourth pick
 
vzn
know a young lady that went to UCSD CS, just graduated. seems sharp but shes glued to her phone all the time :(
 
1:13 AM
I'm really excited to try and get into QC, it just seems to have some dead cool applications
 
vzn
oops sorry that was UCLA my mistake
 
Big difference from UCLA to UCSD hahaha
 
vzn
QC is finally starting to look "half plausible" last few yrs with dwave etc.
 
In my mind at least
 
vzn
personally am skeptical it will scale, history has proven that it hasnt much so far... it could be the cusp of chg on that though...
 
1:15 AM
I have a feeling QC will bring some very cool stuff into the world
 
vzn
looking at your web site "null pointer". aptly named so far :P
 
perhaps (and most likely so) it won't be at every home
But I do think it will be at every major company
Yeah I started that but I got sick and couldn't continue setting it up
I'll be getting back to it last week
only started a week ago or so
 
vzn
what are you thinking of putting on it
 
Just thoughts really
I write a lot of notes that I tend to keep for myself
notes about all kinds of stuff
 
vzn
what kind of stuff did you say you were coding?
 
1:17 AM
thought I'd make it public, maybe someone will read it
Currently I'm coding nothing since I got H1N1 and it's murdering me
 
vzn
whoa! killer! sorry!
 
But before that I was working a little project with DS and I'm developing a beautifier for shell script (using python and regex) as well as porting the factorial algorithms I helped develop from C++ to Python
Since they are faster (in C++) that Python's default implementation I wanted to try and push a change to Python itself
Then I'll finally feel like I gave a little back to a language who I feel gave me so much
 
vzn
oh yeah, the factorial code right... gotta look that up again...
 
vzn
yeah found it. maybe put the code on github or something :)
 
1:22 AM
It is, but under luschny's account
I have a branch with the python version, but it needs a lot of work still
 
vzn
is any of your code on github somewhere?
python is really great for science these days, like it, havent used it too much, did bang on it a little bit...
there was another dude in here playing with QC libraries in it... very difficult undertaking for an undergrad...
 
vzn
great :)
how did you pick UCSD over the others?
 
Well UCSD and VA Tech are clearly superior to UMN in my area
so that's an easy choice if you disregard tuition
San Diego is in CA where I know some people and where the weather is great as well as general life
 
vzn
yeah hard to beat CA have visited over the yrs really luv it :D
 
1:26 AM
VA Tech is in VA, where I don't know anyone, I've never been to and have no clue what the weather's like
So it was kind of a done deal for UCSD
Also it ranks better if that means anything
 
vzn
do you graduate end of this year?
 
Done with that damn book
@BernardMeurer VA weather ranges from Ok to shit
 
vzn
(speak of the devil)
 
DC area weather is probably the worst in the country, maybe besides the swamps of FL
 
@vzn I already finished High School (Our school year goes Feb-Dec)
 
1:30 AM
@vzn screw you
 
Idk, I feel positive about CA, I want to go there
 
You weren't even talking about me
 
Just gotta figure out how to pay for it
 
@BernardMeurer IF you can afford it
 
@0celo7 Exactly
 
vzn
1:30 AM
lol 0ce dont take it personally was just writing random thoughts :P
 
I have one sponsor so far that said he might be willing to get half my tuition covered
 
vzn
wow! half! that rocks... friend of family?
 
and tomorrow I have an interview with another one who might cover everything
 
@BernardMeurer rich...
@vzn I take everything personally
 
@vzn He's a guy who invests in young talents or whatever
Bets money that people will become something I guess
 
vzn
1:32 AM
ah "invest" is different than "gift"...
0ce maybe a "devil" is better than a "troll"? :P
 
@vzn Yes, I guess you do kind of morally owe him afterwards
 
vzn
just think of that cute little unix devil... or the tasmanian devil... you get the idea :)
 
Well, he doesn't know I already traded my soul for a cookie in third grade
 
vzn
how did you meet peter luschny?
 
@vzn I found his page on factorials, I stalked the hell out of him until I found his email, I hit him an email and he was very nice and explained everything to me
I helped translate some of his stuff from German to English
 
vzn
1:35 AM
nice... what attracted you to factorial computation?
 
and that was it really, very nice guy, still have to pay him a visit some day
@vzn It's bloody difficult :D
 
vzn
factorial calculations/ approximations show up a lot in math/ CS...
 
When you go calculate memory complexity for some algorithms on large factorials in parallel computation it tends towards infinity
and then you're just like "lel, what a goof"
Stirling is the god of factorial approximations
But Schonhage-strassen is the fastest exact calculation I think
Sorry, that's wrong
The fastest is an algo using SS
since SS is for multiplication
IIRC
Fastest without parallel computing, with multithreading it's PrimeSwing
 
vzn
ah schonhage-strassen legends in multiplication algorithms/ theory
 
I sent them an email when i was like 13 asking for help saying I couldn't understand their method lol
they never replied
 
vzn
1:40 AM
actually thinking of blogging on that at some pt, have a bunch of links... there was a recent heralded "breakthru" in area...
small decrease in the O(n^c) exponent...
 
Writing about factorials or multiplications
 
@vzn Clean?
@BernardMeurer Why not use an approximation for factorials?
The good old Stirling approximation never failed me.
 
@DanielSank Why not climb a fake Everest?
It's for the sheer challenge of it :p
Idk, I was obsessed with factorials, gladly that's over
 
@BernardMeurer Ah.
 
(I used to calculate factorials for fun, and had a painting on $n!$)
 
vzn
1:43 AM
DS Dwave has the Dirty qubits & you guys have the clean ones right? :D
 
I went through a socialization program
@DanielSank Did you figure out what a fermionic QC is? I only found some paper's with titles that scared me
 
vzn
"socialization"? lol
that "work" must not have been too hard DS hah
 
@vzn Yeah, during 11th grade I made some good friends that taught me how to not scare people away and so on
And also who taught me not to use quantum mechanics pickup lines
but I still ignore that one
 
vzn
think its 0ce who needs those lessons not you hah
 
I was cured
 
1:48 AM
There ain't no cure for dat.
 
Either you're a people person or not.
 
That's me
in the video
 
 
1 hour later…
2:56 AM
@BernardMeurer Not a clue.
 
@DanielSank If you with your 70 years of experience doesn't know how will I ever :O
 
@BernardMeurer har har
Hey guys, I need some help with elementary math.
Suppose I have this
$\dot{a} = -i \omega a - i J$
Surely this can be integrated trivially.
If the $iJ$ term were absent I would get
$a(t) = \exp(-i \omega t)a(0)$.
 
3:12 AM
Did you realize the answer to your question halfway through it?
 
@BernardMeurer Nope.
The question is, how do I solve with both terms.
 
@DanielSank What is J here?
 
@barrycarter A fixed complex number.
 
So i J would so be just a constant, right?
 
yes.
Isn't there a simple way to solve linear equations like this one?
 
3:17 AM
a'(t) = c1*a(t) + c2 is the form of your equation
 
@barrycarter yes
 
Being lazy and running it thru Mathematica
$a(t)\to c_1 e^{\text{c1} t}-\frac{\text{c2}}{\text{c1}}$ where capital C(1) is a constant determined by a(0)
Oh, ouch, hang on
$a(t)\to c(3) e^{\text{c1} t}-\frac{\text{c2}}{\text{c1}}$
 
Oh neat.
 
Where c(3) is a constant determined by a(0)
Really bad choice of constant name earlier.
$ a(t)\to \frac{e^{\text{c1} t} (\text{a0}
\text{c1}+\text{c2})-\text{c2}}{\text{c1}}
$ where a0 is a(0)
Much better!
 
ok that looks right.
 
3:44 AM
Relativistic simultaneity means assigning objects a "time zone" that is v * x ahead of your own, where v is your relative velocity to the object and x is your distance from the object (in your frame). I find this annoying.
 
how else could you describe it to a beginner?
 
@skillpatrol It seems like its just artificial bookkeeping.
 
"artificial"? in what sense?
 
@skillpatrol The light two observers see in one location is the same, they just assign different times to the same event. This leads to "paradoxes" like the Andromeda "paradox".
Both observers above are seeing the same thing, but they assign Earth a different time.
Just to the Lorentz contraction works out.
I've written a long dull thingy about it: github.com/barrycarter/bcapps/blob/master/STACK/bc-andromeda.m
 
Indeed, "simultaneity" is the first concept that must be consistently stipulated :)
 
3:55 AM
@skillpatrol I'm thinking there must be a better way. The idea that you re-assign time to everything in the entire universe every time you accelerate (or even move) seems ludicrous.
 
What does "time" mean to you?
 
@skillpatrol What a deep question :) Uhhh, the interval between two events?
 
Yes it is what elapses between two events.
 
If I'm 10 ly from Earth stationary and then jump to 0.8 c, it is not the case that 8 years has passed anywhere.
Or if I decelerate it's not the case that 8 years has unpassed. If nothing else, having to declare negative time seems nonsensical.
 

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