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The cost and yield of moving from (quantum) state to (quantum) state

The countdown had begun. In ten days, I’d move from Florida, where I’d spent the summer with family, to Caltech. Unfolded boxes leaned against my dresser, and suitcases yawned on the floor. I was working on a paper. Even if I’d turned around from my desk, I wouldn’t have seen the stacked books and folded [...]

2017-01-13T10:05:50-08:00October 14th, 2013|Reflections, Theoretical highlights|Comments Off on The cost and yield of moving from (quantum) state to (quantum) state

Faculty Lunch and Discussion

Faculty Lunch and Discussion Date Speaker Location January 29 Linda Ye 114 East Bridge February 12 Rana Adhikari 114 East Bridge February 26 Alexei Kitaev 114 East Bridge Date Speaker Location December 4 Oskar Painter 114 East Bridge November 20 Lesik Motrunich 114 East Bridge November 6 Alireza Marandi 114 East Bridge October [...]

2024-01-22T11:33:38-08:00April 12th, 2016|Comments Off on Faculty Lunch and Discussion

Making predictions in the multiverse

I am a theoretical physicist at University of California, Berkeley. Last month, I attended a very interesting conference organized by Foundamental Questions Institute (FQXi) in Puerto Rico, and presented a talk about making predictions in cosmology, especially in the eternally inflating multiverse. I very much enjoyed discussions with people at the conference, where I was invited [...]

2017-01-13T10:05:47-08:00February 13th, 2014|Theoretical highlights|Comments Off on Making predictions in the multiverse

Reading the sub(linear) text

Physicists are not known for finesse. “Even if it cost us our funding,” I’ve heard a physicist declare, “we’d tell you what we think.” Little wonder I irked the porter who directed me toward central Cambridge. The University of Cambridge consists of colleges as the US consists of states. Each college has a porter’s lodge, [...]

2017-01-13T10:05:41-08:00July 20th, 2014|Real science, Reflections, Theoretical highlights|Comments Off on Reading the sub(linear) text

Defending against high-frequency attacks

It was the summer of 2008. I was 22 years old, and it was my second week working in the crude oil and natural gas options pit at the New York Mercantile Exchange (NYMEX.) My head was throbbing after two consecutive weeks of disorientation. It was like being born into a new world, but without [...]

2017-01-13T10:05:45-08:00April 8th, 2014|Uncategorized|Comments Off on Defending against high-frequency attacks

Science books for kids matter (or used to)

The elementary school I attended hosted an annual book fair, and every year I went with my mother to browse. I would check out the sports books first, to see whether there were any books about baseball I had not already read (typically, no). There was also a small table of science books, and in [...]

2017-01-13T10:05:56-08:00January 6th, 2013|Reflections, The expert's corner|Comments Off on Science books for kids matter (or used to)

How to build a teleportation machine: Teleportation protocol

Damn, it sure takes a long time for light to travel to the Pegasus galaxy. If only quantum teleportation enabled FTL Stargates… I was hoping to post this earlier, but a heavy dose of writer’s block set in (I met a girl, and no, this blog didn’t help — but [...]

2017-01-13T10:06:03-08:00September 17th, 2012|The expert's corner, Theoretical highlights|Comments Off on How to build a teleportation machine: Teleportation protocol

Monopoles passing through Flatland!

Like many mathematically inclined teenagers, I was charmed when I first read the book Flatland by Edwin Abbott Abbott.* It’s a story about a Sphere who visits a two-dimensional world and tries to awaken its inhabitants to the existence of a third dimension. As perceived by Flatlanders, the Sphere is a circle which appears as [...]

2017-01-13T10:05:52-08:00July 3rd, 2013|The expert's corner, Theoretical highlights|Comments Off on Monopoles passing through Flatland!

Diversity

Transforming the STEM Pipeline into a River The traditional metaphor of the “leaky pipeline” tracks the number of students entering the educational system and emphasizes points at which women and minority students leave the system. IQIM is working to increase diversity on our campus and more broadly in STEM by encouraging a [...]

2023-05-03T11:56:50-07:00April 28th, 2023|Comments Off on Diversity

Is Alice burning? The black hole firewall controversy

Quantum correlations are monogamous. Bob can be highly entangled with Alice or with Carrie, but not both. Back in the early 1990s, I was very interested in the quantum physics of black holes and devoted much of my research effort to thinking about how black holes process quantum information. That [...]

2017-01-13T10:05:58-08:00December 3rd, 2012|The expert's corner, Theoretical highlights|Comments Off on Is Alice burning? The black hole firewall controversy
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