John Preskill
@preskill
Followers
150K
Following
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Theoretical physicist @Caltech, Director of @IQIM_Caltech, Amazon Scholar
Pasadena, California
Joined October 2010
150K. Thanks for following me. Sometimes I wonder who y'all are.
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We’re excited to propose and validate simple methods for preparing ground states and thermal states of many-particle quantum systems, which might be feasible for early fault-tolerant quantum devices. All the credit goes to my brilliant collaborators.
arxiv.org
We propose new quantum algorithms for thermal and ground state preparation based on system-bath interactions. These algorithms require only forward evolution under a system-bath Hamiltonian in...
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The infectious enthusiasm of my wonderful co-authors (@RobertHuangHY, Soonwon Choi, @JarrodMcclean) drove this upbeat assessment of “The Vast World of Quantum Advantage.".
arxiv.org
The quest to identify quantum advantages lies at the heart of quantum technology. While quantum devices promise extraordinary capabilities, from exponential computational speedups to unprecedented...
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In our world of (noisy) data, error correction is everywhere, as Mary Wootters eloquently explains.
quantamagazine.org
Mary Wootters discusses how error-correcting codes work, and how they are essential for reliable communication and storage.
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AI can improve the design of experiments. “It takes a lot to think this far outside of the accepted solution,” Adhikari said. “We really needed the AI.”.
quantamagazine.org
Artificial intelligence software is designing novel experimental protocols that improve upon the work of human physicists, although the humans are still “doing a lot of baby-sitting.”
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Caught in the middle of a political battle, @BlackRock reaffirmed its focus is helping millions of Americans save for retirement. They warned that injecting politics from either side risks undermining financial performance.
prosperityretirementalliance.com
Millions of Ameircans depend on the security of their retirement savings to live with dignity after a lifetime of hard work. That’s why the Alliance for Prosperity and a Secure Retirement (APSR)...
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Mark Saffman reviews the remarkable recent progress on quantum computing with neutral atoms.
podcast.newquantumera.com
In this episode of The New Quantum Era, host Sebastian Hassinger sits down with Dr. Mark Saffman, a leading expert in atomic physics and quantum information science. As a professor at the Universit...
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Chris Monroe recalls how fundamental research on atomic clocks led to quantum computing technologies.
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A touching tribute to an inspiring teacher from a grateful former student.
quantumfrontiers.com
A common saying goes, you should never meet your heroes, because they’ll disappoint you. But you shouldn’t trust every common saying; some heroes impress you more, the better you know them. Ray Laf…
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Hirosi Ooguri takes the reins of @PMACaltech. Fiona Harrison was a great Chair, and I'm sure Hirosi will be a worthy successor.
caltech.edu
Physicist Hirosi Ooguri will become the next chair of the Division of Physics, Mathematics and Astronomy.
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What a pleasure to catch up with Sri and Chari at a Caltech alumni event this weekend! They were undergrads @Caltech when we worked together on quantum algorithms and error correction 30 years ago.
This weekend I was fortunate to reconnect with @preskill and @anchari with whom I spent many hours researching intricate details of qubits, shor’s algorithm, linear ion trap, quantum error correction codes during the “big bang” of quantum computing in the summer of 1995.
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A pleasant surprise: In celebration of the International Year of Quantum, @PhysicsToday has reprinted my June 1999 article in their current issue. "Battling Decoherence: The Fault-Tolerant Quantum Computer".
pubs.aip.org
Quantum computers have the potential to do certain calculations faster than any foreseeable classical computers, but their success will depend on preserving com
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