{"id":1691,"date":"2017-07-09T21:59:44","date_gmt":"2017-07-10T05:59:44","guid":{"rendered":"http:\/\/antoine.wojdyla.fr\/blog\/?p=1691"},"modified":"2017-07-09T22:01:17","modified_gmt":"2017-07-10T06:01:17","slug":"qubit","status":"publish","type":"post","link":"http:\/\/antoine.wojdyla.fr\/blog\/2017\/07\/09\/qubit\/","title":{"rendered":"Qubit"},"content":{"rendered":"

I’ve run my first quantum computation!<\/p>Since I was working on the latest iteration of classical computer manufacturing techniques (EUV lithography), everyone asked me what were my thought on the future of Moore’s law,<\/strong> and what did I think about quantum computing<\/strong>. To the first question, I could mumble things about transistor size and the fact that we’re getting awfully close to the atomic size; to the latter question… I just had to go figure out myself!<\/p>Back in April, I’ve invited Irfan Siddiqi (qnl.berkeley.edu<\/a>), founding director of the brand new Center for Quantum Coherent Science<\/a>, and his postdocs at Berkeley lab to give a talk to postdocs, and last the lab announced the first 45-qubits quantum simulations<\/a> on the NERSC… things are going VERY fast! (read the Quantum manifesto<\/a>)<\/p>\n

\"Kevin<\/a><\/p>\n

Kevin O’Brien on multiplexing qubit readouts<\/p>\n<\/div>

This is thanks to Rigetti<\/a>, a full-stack quantum computer startup based in Berkeley (Wired<\/a>, IEEE Spectrum<\/a>).<\/p><\/p>The way to do this is to use Forest (you can get an API key by registering here<\/a>), which is a quantum computing environment that either simulate quantum computer, or send the result to a real quantum computer and send back the results.<\/p>To get started you can use PyQuil<\/a> (on github<\/a>, or by running pip install pyquil<\/span><\/code> in your terminal, if you have a Mac, though I had to modify line 318 in api.py to raise DeprecationWarning(“Version checks…)<\/em>, because it was using Python 2.7 syntax); if you want to use the API, you need to have a .pyquil_config <\/span><\/code>file in your home folder with the API information.<\/p>You can also use the @quilbot on twitter to perform your simulation :<\/p>\n

\n

@quilbot<\/a>
\nX 0
\nX 1
\nX 2
\nH 2
\nCPHASE(pi\/2) 1 2
\nH 1
\nCPHASE(pi\/4) 0 2
\nCPHASE(pi\/2) 0 1
\nH 0
\nSWAP 0 2
\nMEASURE 0 [0]
\nMEASURE 1 [1]
\nMEASURE 2 [2]<\/p>\u2014 Antoine Wojdyla (@awojdyla) July 8, 2017<\/a><\/p><\/blockquote>