Google's quantum hardware/software effort.
The "AI" part is just prerequisite buzzword of the AI boom era for any project and completely bullshit.
According to job postings such as: archive.ph/wip/Fdgsv their center is in Goleta, California, near Santa Barbara. Though Google tends to promote it more as Santa Barbara, see e.g. Daniel's t-shirt at Video "Building a quantum computer with superconducting qubits by Daniel Sank (2019)".
Control of transmon qubits using a cryogenic CMOS integrated circuit (QuantumCasts) by Google (2020)
Source. Fantastic video, good photos of the Google Quantum AI setup!Built 2021. TODO address. Located in Santa Barbara, which has long been the epycenter of Google's AI efforts. Apparently contains fabrication facilities.
Take a tour of Google's Quantum AI Lab by Google Quantum AI
. Source. 2023Cool dude. Uses Stack Exchange: physics.stackexchange.com/users/31790/danielsank
Started at Google Quantum AI in 2014.
Has his LaTeX notes at: github.com/DanielSank/theory. One day he will convert to OurBigBook.com. Interesting to see that he is able to continue his notes despite being at Google.
Timeline:He went pretty much in a straight line into the quantum computing boom! Well done.
- 2015: joined Google as a Google Quantum AI employee
- 2010: UCSB Physics PhD. His thesis was "Fault-tolerant superconducting qubits" and the PDF can be downloaded from: alexandria.ucsb.edu/lib/ark:/48907/f3b56gwb.
- 2006: UCSB Physics undergrad. In 2008 he joined John Martinis' lab during his undergrad itself.
Timeline:
- 2020: left Google after he was demoted apparently, and joined Silicon Quantum Computing.
- 2014: he and the entire lab were hired by Google
This is a good read: quantumai.google/hardware/datasheet/weber.pdf May 14, 2021. Their topology is so weird, not just a rectangle, one wonders why! You get different error rates in different qubits, it's mad.
Google Sycamore Weber quantum computer connectivity graph
. Weber is a specific processor of the Sycamore family. From this we see it clearly that qubits are connected to at most 4 other qubits, and that the full topology is not just a simple rectangle.Meet Willow, our state-of-the-art quantum chip by Google Quantum AI
. Source. 2024 public presentation of their then new chip.
Related blog post: blog.google/technology/research/google-willow-quantum-chip/
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