After years of efforts,

The Energy-Participation Ratio (EPR) for the design and quantization of a #quantumcomputing chip now on the #arXiv
arxiv.org/abs/2010.00620

Glad the EPR method seems to already be useful to some 25+ groups
github.com/zlatko-minev/p…

Send comments/questions
“Where is the energy?”

is the only question you need to ask & answer to design both the dissipative budget and the quantum #Hamiltonian of any #quantum device

— irrelevant of its topology or the constitution of its nonlinear elements.
The answer to this question is the Energy-Participation Ratio (EPR) p — a number between 0 and 1,

which says how much of the energy of a mode is stored in a nonlinear element (e.g., Josephson junction).

The EPR is the key to the classical-to-quantum bridge for #quantumcircuits
Accuracy:

We designed dozen of quantum device with the #EPR method, including my recent @Nature paper work on #quantumjumps.

Results demonstrate percents-level agreement for the Hamiltonian,

over five-orders of magnitude in energy scales,

and across dozens of samples.
Appendices C and D seem to now contain a mini-treatise on our field of #superconducting #quantum #circuits

arxiv.org/abs/2010.00620 #quantumcomputing #pyEPR
Great job, @LEChristakis, helping with the simulation using #pyEPR!
"Where is the energy?"

In addition to forming the classical-to-quantum bridge,

the energy-participation ratio (#EPR) of a nonlinear element in a #quantum #circuit is universal, conserved quantity:

- EPR is neither created nor destroyed

- EPR is only diluted among modes
@Yale_QI If you're looking to contribute to open source-hardware design in quantum tech then #pyEPR is a great place to look.

We have 92 folks signed up for the working group session in two weeks.

Sign up here if interested ow.ly/D2Vl50AYRkm.

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More from @zlatko_minev

17 Aug
Had a great chat with @unitaryfund about #pyEPR for #quantum design, excited to get some of us using pyEPR for a working group meeting sometime soon.

DM me if you want to join.

pyEPR: ow.ly/D2Vl50AYRkm

#quantumcomputing #python Image
If you can’t DM me - just reply here and I can follow you so we can DM
Read 4 tweets
22 Jul
JOB POST:

As PI, I am looking to hire two full-time, full-stack experienced #python developers for #quantum #computing for an exciting and growing project I started and lead here with a wonderful and growing team based out of New York.

MAIN POST: ibm.co/39lWOI8 (see...
requirements here)
Second post: ibm.co/2ZRAMda

Required Technical and Professional ...
Expertise:
* Must have strong python developer skills (6+ years)
* Must have strong knowledge of object-oriented software design principles

Preferred Technical and Professional ...
Expertise
* Quantum physics background and education
* Some experience with physics or engineering simulations

Ideal to know: defining abstractions & interfaces, PEP8, linting, magic methods in python, github, software design principles, rapid prototyping speed, demonstrated ...
Read 5 tweets
17 Jun
Thrilled to share that I have been named on the @MIT @techreview’s global list of 35 Under 35 Innovators! (technologyreview.com/innovator/zlat…) I feel truly humbled and super excited to be recognized alongside the inspiring honorees who have done extraordinary work. Image
“Congratulations on being named one of this year’s Innovators Under 35! Each year since 1999, we’ve selected exceptionally talented young innovators whose work we believe has the greatest potential to transform the world. Previous winners include Larry Page and Sergey Brin,
the cofounders of Google; John Rogers, a materials scientist at the University of Illinois; Jonathan Ive, the chief designer of Apple; Helen Greiner, the cofounder of iRobot; and Max Levchin, the cofounder of PayPal.” -- MIT Technology Review
Read 5 tweets

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