Jay Gambetta Profile picture
Dad, husband, Scientist, IBM Fellow and VP IBM Quantum. Views are my own. he/him
Jul 8, 2023 9 tweets 3 min read
Earl I will make a few comments. The first is pushing average gate fidelity has not been the problem. In fact we regularly see above >99.9 in two qubit gate error. The hard part has been *stability* of two qubit gate error and cross-talk and both of these needed new technology. https://t.co/hKRZdcTnNf
In fact in each of our birds it is has never been about the number of qubits. Falcon - bump bonds, Hummingbird - multiplex readout, Eagle - Multi-level wiring and through substrate via, Osprey - Flex I/O, Condor - I/O and Heron a new gate. Not number of qubits they come for free
Nov 9, 2022 20 tweets 9 min read
My sincerest thanks to the many IBM Quantum staffers, clients, and partners who gathered in New York City today for IBM Quantum Summit 2022. Here’s a look back at some of the biggest announcements from the event (thread). Image We’ve once again delivered the world’s largest quantum processor with the IBM Quantum Osprey—a remarkable 433 qubits arranged in our heavy-hex lattice topology. More details on the IBM Research Blog: research.ibm.com/blog/next-wave… Image
May 10, 2022 13 tweets 4 min read
Today we released our updated IBM quantum development roadmap. To learn more, check out the video () and the blog (research.ibm.com/blog/ibm-quant…). 1/n As we go forward into the quantum future, we are focusing on scaling qubits, increasing quality and maximizing speed of quantum circuits. 2/n
Aug 28, 2020 11 tweets 2 min read
David I read the paper on the Hartree-Fock state preparation, and once again I’m impressed by circuits and hardware and see value in any benchmark. However I’m struggling with the answers to the questions below 1. The Hartree-Fock state in a non-molecular basis can be found efficiently with a classical computer, and then preparation of fermionic Gaussian operators can also be compiled efficiently on a quantum computer.